DQ200 fault codes
Documented fault codes for the DQ200 (7-speed dry DSG, factory 0AM/0CW). 77 codes are listed below, grouped by category, each marked by evidence level.
All DQ200 fault codes
Search and filter the documented codes for this family. Select a row to expand the detail.
77 codes shown. Click any row to expand the detail.
| Code | Description | Category | Status |
|---|---|---|---|
| P0562 | System voltage — low | Voltage / power supply | Verified |
DescriptionControl module voltage below operating threshold. On DSG this can be caused by battery, charging or wiring issues and can trigger secondary transmission faults. Address the supply side first. Symptoms
Possible causes
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| P0660 | Solenoid — control circuit fault | Internal control unit (TCU) | Review |
DescriptionThe DQ200 transmission control unit stores P0660 when it detects the following condition: Solenoid — control circuit fault. The fault originates in the transmission control electronics integrated into the mechatronic unit. The unit's self-diagnosis has detected an internal error, an implausible internal value or a software problem. A stored code does not by itself prove that a part has failed. Before replacing anything, check the live data, wiring, connectors, power supply and fluid condition, and confirm the fault on the vehicle. Symptoms
Possible causes
This code is documented but not independently confirmed. Confirm it against the specific vehicle before ordering any part.
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| P0666 | Solenoid — control circuit fault (alternate) | Internal control unit (TCU) | Review |
DescriptionThe DQ200 transmission control unit stores P0666 when it detects the following condition: Solenoid — control circuit fault (alternate). The fault originates in the transmission control electronics integrated into the mechatronic unit. The unit's self-diagnosis has detected an internal error, an implausible internal value or a software problem. A stored code does not by itself prove that a part has failed. Before replacing anything, check the live data, wiring, connectors, power supply and fluid condition, and confirm the fault on the vehicle. Symptoms
Possible causes
This code is documented but not independently confirmed. Confirm it against the specific vehicle before ordering any part.
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| P072A | Stuck in neutral | Gear ratio / gear loss | Verified |
DescriptionThe transmission reports being stuck in neutral. Confirm whether the mechanical gear is actually disengaged or monitoring is reporting incorrectly. Symptoms
Possible causes
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| P072B | Stuck in reverse | Gear ratio / gear loss | Verified |
DescriptionThe transmission reports being stuck in reverse. On the DQ200, loss of reverse or difficulty engaging it is commonly associated with the 6th/Reverse selector fork and its rail bearing. Symptoms
Possible causes
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| P072C | Stuck in gear 1 | Gear ratio / gear loss | Verified |
DescriptionThe transmission reports it is stuck in gear 1. Confirm with live data whether the mechanical gear is actually engaged or the monitoring is reporting incorrectly. Symptoms
Possible causes
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| P072D | Stuck in gear 2 | Gear ratio / gear loss | Verified |
DescriptionThe transmission reports it is stuck in gear 2. Confirm with live data whether the mechanical gear is actually engaged or monitoring is reporting incorrectly. Symptoms
Possible causes
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| P073A | Gear 1 — incorrect ratio | Gear ratio / gear loss | Verified |
DescriptionThe control unit calculated a gear ratio outside the expected range for gear 1. On DSG this can indicate clutch slip, internal hydraulic issues or a monitoring artefact. Confirm mechanically before replacing components. Symptoms
Possible causes
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| P073B | Gear 2 — incorrect ratio | Gear ratio / gear loss | Verified |
DescriptionThe control unit calculated a gear ratio outside the expected range for gear 2. Similar diagnostic reasoning to P073A. Symptoms
Possible causes
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| P0840 | Transmission fluid pressure sensor / switch A — circuit | Pressure sensor | Review |
DescriptionThe DQ200 transmission control unit stores P0840 when it detects the following condition: Transmission fluid pressure sensor / switch A — circuit. The fault concerns a pressure sensor or pressure switch in the transmission. The control unit uses these signals for clutch and system pressure control, and stores the code when the signal is out of range, too low or implausible. A stored code does not by itself prove that a part has failed. Before replacing anything, check the live data, wiring, connectors, power supply and fluid condition, and confirm the fault on the vehicle. Symptoms
Possible causes
This code is documented but not independently confirmed. Confirm it against the specific vehicle before ordering any part.
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| P0841 | Transmission fluid pressure sensor / switch A — range/performance | Pressure sensor | Verified |
DescriptionGeneric hydraulic pressure sensor / switch circuit performance fault. On DSG this points at pressure monitoring. Confirm whether the fault relates to the sensor, the wiring, or the actual hydraulic circuit before replacing parts. Symptoms
Possible causes
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| P0928 | Gear shift lock solenoid — circuit fault | Valve / solenoid electrical | Review |
DescriptionThe DQ200 transmission control unit stores P0928 when it detects the following condition: Gear shift lock solenoid — circuit fault. The fault is electrical: the control unit monitors the current and resistance of each solenoid and pressure control valve, and stores the code when it detects an open circuit, a short circuit or a control current outside the expected range. A stored code does not by itself prove that a part has failed. Before replacing anything, check the live data, wiring, connectors, power supply and fluid condition, and confirm the fault on the vehicle. Symptoms
Possible causes
This code is documented but not independently confirmed. Confirm it against the specific vehicle before ordering any part.
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| P0B0C00 | Auxiliary transmission fluid pump A — hydraulic leakage | Hydraulic pressure | Review |
DescriptionThe DQ200 transmission control unit stores P0B0C00 when it detects the following condition: Auxiliary transmission fluid pump A — hydraulic leakage. The fault concerns the hydraulic supply of the mechatronic unit. The control unit compares the required system pressure with the measured pressure and stores the code when the pressure is too low, too high, builds up too slowly, or the pump runs outside its normal operating time. A stored code does not by itself prove that a part has failed. Before replacing anything, check the live data, wiring, connectors, power supply and fluid condition, and confirm the fault on the vehicle. Symptoms
Possible causes
This code is documented but not independently confirmed. Confirm it against the specific vehicle before ordering any part.
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| P0C2A00 | Auxiliary transmission fluid pump — hydraulic pressure / operation fault | Hydraulic pressure | Review |
DescriptionThe DQ200 transmission control unit stores P0C2A00 when it detects the following condition: Auxiliary transmission fluid pump — hydraulic pressure / operation fault. The fault concerns the hydraulic supply of the mechatronic unit. The control unit compares the required system pressure with the measured pressure and stores the code when the pressure is too low, too high, builds up too slowly, or the pump runs outside its normal operating time. A stored code does not by itself prove that a part has failed. Before replacing anything, check the live data, wiring, connectors, power supply and fluid condition, and confirm the fault on the vehicle. Symptoms
Possible causes
This code is documented but not independently confirmed. Confirm it against the specific vehicle before ordering any part.
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| P137A | Internal TCU — hardware fault | Internal control unit (TCU) | Review |
DescriptionThe DQ200 transmission control unit stores P137A when it detects the following condition: Internal TCU — hardware fault. The fault originates in the transmission control electronics integrated into the mechatronic unit. The unit's self-diagnosis has detected an internal error, an implausible internal value or a software problem. A stored code does not by itself prove that a part has failed. Before replacing anything, check the live data, wiring, connectors, power supply and fluid condition, and confirm the fault on the vehicle. Symptoms
Possible causes
This code is documented but not independently confirmed. Confirm it against the specific vehicle before ordering any part.
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| P1604 | Internal control module — fault | Internal control unit (TCU) | Review |
DescriptionThe DQ200 transmission control unit stores P1604 when it detects the following condition: Internal control module — fault. The fault originates in the transmission control electronics integrated into the mechatronic unit. The unit's self-diagnosis has detected an internal error, an implausible internal value or a software problem. A stored code does not by itself prove that a part has failed. Before replacing anything, check the live data, wiring, connectors, power supply and fluid condition, and confirm the fault on the vehicle. Symptoms
Possible causes
This code is documented but not independently confirmed. Confirm it against the specific vehicle before ordering any part.
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| P1725 | Gear selector / hydraulic engagement fault | Gear selection | Review |
DescriptionThe DQ200 transmission control unit stores P1725 when it detects the following condition: Gear selector / hydraulic engagement fault. The fault concerns engaging a gear. The gear selector moves the shift fork hydraulically and a travel sensor reports its position. The code is stored when the gear cannot be engaged, the position does not match the command, or the movement takes too long. A stored code does not by itself prove that a part has failed. Before replacing anything, check the live data, wiring, connectors, power supply and fluid condition, and confirm the fault on the vehicle. Symptoms
Possible causes
This code is documented but not independently confirmed. Confirm it against the specific vehicle before ordering any part.
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| P1727 | Clutch adaptation — value out of range | Clutch faults | Review |
DescriptionThe DQ200 transmission control unit stores P1727 when it detects the following condition: Clutch adaptation — value out of range. The fault concerns clutch control: engagement, adaptation, torque limitation or clutch temperature. The control unit compares the commanded clutch position or pressure with the measured value and stores the code when the difference or the adapted value leaves the permitted range. A stored code does not by itself prove that a part has failed. Before replacing anything, check the live data, wiring, connectors, power supply and fluid condition, and confirm the fault on the vehicle. Symptoms
Possible causes
This code is documented but not independently confirmed. Confirm it against the specific vehicle before ordering any part.
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| P172F | Internal TCU — plausibility fault | Internal control unit (TCU) | Review |
DescriptionThe DQ200 transmission control unit stores P172F when it detects the following condition: Internal TCU — plausibility fault. The fault originates in the transmission control electronics integrated into the mechatronic unit. The unit's self-diagnosis has detected an internal error, an implausible internal value or a software problem. A stored code does not by itself prove that a part has failed. Before replacing anything, check the live data, wiring, connectors, power supply and fluid condition, and confirm the fault on the vehicle. Symptoms
Possible causes
This code is documented but not independently confirmed. Confirm it against the specific vehicle before ordering any part.
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| P1730 | Gear shift — position monitoring fault | Gear selection | Review |
DescriptionThe DQ200 transmission control unit stores P1730 when it detects the following condition: Gear shift — position monitoring fault. The fault concerns engaging a gear. The gear selector moves the shift fork hydraulically and a travel sensor reports its position. The code is stored when the gear cannot be engaged, the position does not match the command, or the movement takes too long. A stored code does not by itself prove that a part has failed. Before replacing anything, check the live data, wiring, connectors, power supply and fluid condition, and confirm the fault on the vehicle. Symptoms
Possible causes
This code is documented but not independently confirmed. Confirm it against the specific vehicle before ordering any part.
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| P1731 | Gear shift — engagement monitoring fault | Gear selection | Review |
DescriptionThe DQ200 transmission control unit stores P1731 when it detects the following condition: Gear shift — engagement monitoring fault. The fault concerns engaging a gear. The gear selector moves the shift fork hydraulically and a travel sensor reports its position. The code is stored when the gear cannot be engaged, the position does not match the command, or the movement takes too long. A stored code does not by itself prove that a part has failed. Before replacing anything, check the live data, wiring, connectors, power supply and fluid condition, and confirm the fault on the vehicle. Symptoms
Possible causes
This code is documented but not independently confirmed. Confirm it against the specific vehicle before ordering any part.
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| P1732 | Clutch adaptation fault | Clutch faults | Review |
DescriptionThe DQ200 transmission control unit stores P1732 when it detects the following condition: Clutch adaptation fault. The fault concerns clutch control: engagement, adaptation, torque limitation or clutch temperature. The control unit compares the commanded clutch position or pressure with the measured value and stores the code when the difference or the adapted value leaves the permitted range. A stored code does not by itself prove that a part has failed. Before replacing anything, check the live data, wiring, connectors, power supply and fluid condition, and confirm the fault on the vehicle. Symptoms
Possible causes
This code is documented but not independently confirmed. Confirm it against the specific vehicle before ordering any part.
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| P1734 | Gear engagement / selector fault | Gear selection | Review |
DescriptionThe DQ200 transmission control unit stores P1734 when it detects the following condition: Gear engagement / selector fault. The fault concerns engaging a gear. The gear selector moves the shift fork hydraulically and a travel sensor reports its position. The code is stored when the gear cannot be engaged, the position does not match the command, or the movement takes too long. A stored code does not by itself prove that a part has failed. Before replacing anything, check the live data, wiring, connectors, power supply and fluid condition, and confirm the fault on the vehicle. Symptoms
Possible causes
This code is documented but not independently confirmed. Confirm it against the specific vehicle before ordering any part.
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| P1735 | Gear shift 5 — engagement fault | Gear selection | Review |
DescriptionThe DQ200 transmission control unit stores P1735 when it detects the following condition: Gear shift 5 — engagement fault. The fault concerns engaging a gear. The gear selector moves the shift fork hydraulically and a travel sensor reports its position. The code is stored when the gear cannot be engaged, the position does not match the command, or the movement takes too long. A stored code does not by itself prove that a part has failed. Before replacing anything, check the live data, wiring, connectors, power supply and fluid condition, and confirm the fault on the vehicle. Symptoms
Possible causes
This code is documented but not independently confirmed. Confirm it against the specific vehicle before ordering any part.
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| P1736 | Gear shift 6 — engagement fault | Gear selection | Review |
DescriptionThe DQ200 transmission control unit stores P1736 when it detects the following condition: Gear shift 6 — engagement fault. The fault concerns engaging a gear. The gear selector moves the shift fork hydraulically and a travel sensor reports its position. The code is stored when the gear cannot be engaged, the position does not match the command, or the movement takes too long. A stored code does not by itself prove that a part has failed. Before replacing anything, check the live data, wiring, connectors, power supply and fluid condition, and confirm the fault on the vehicle. Symptoms
Possible causes
This code is documented but not independently confirmed. Confirm it against the specific vehicle before ordering any part.
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| P173A | Gear shift 3 — engagement fault | Gear selection | Review |
DescriptionThe DQ200 transmission control unit stores P173A when it detects the following condition: Gear shift 3 — engagement fault. The fault concerns engaging a gear. The gear selector moves the shift fork hydraulically and a travel sensor reports its position. The code is stored when the gear cannot be engaged, the position does not match the command, or the movement takes too long. A stored code does not by itself prove that a part has failed. Before replacing anything, check the live data, wiring, connectors, power supply and fluid condition, and confirm the fault on the vehicle. Symptoms
Possible causes
This code is documented but not independently confirmed. Confirm it against the specific vehicle before ordering any part.
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| P173B | Gear shift 4 — engagement fault | Gear selection | Review |
DescriptionThe DQ200 transmission control unit stores P173B when it detects the following condition: Gear shift 4 — engagement fault. The fault concerns engaging a gear. The gear selector moves the shift fork hydraulically and a travel sensor reports its position. The code is stored when the gear cannot be engaged, the position does not match the command, or the movement takes too long. A stored code does not by itself prove that a part has failed. Before replacing anything, check the live data, wiring, connectors, power supply and fluid condition, and confirm the fault on the vehicle. Symptoms
Possible causes
This code is documented but not independently confirmed. Confirm it against the specific vehicle before ordering any part.
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| P173C | Gear shift 2 — engagement fault | Gear selection | Review |
DescriptionThe DQ200 transmission control unit stores P173C when it detects the following condition: Gear shift 2 — engagement fault. The fault concerns engaging a gear. The gear selector moves the shift fork hydraulically and a travel sensor reports its position. The code is stored when the gear cannot be engaged, the position does not match the command, or the movement takes too long. A stored code does not by itself prove that a part has failed. Before replacing anything, check the live data, wiring, connectors, power supply and fluid condition, and confirm the fault on the vehicle. Symptoms
Possible causes
This code is documented but not independently confirmed. Confirm it against the specific vehicle before ordering any part.
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| P173D | Gear shift 1 — engagement fault | Gear selection | Verified |
DescriptionEngagement fault reported for gear shift path 1. Confirm with live data whether the issue is actuator-side or sensor-side before component replacement. Symptoms
Possible causes
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| P173E | Gear shift — engagement fault (7th path) | Gear selection | Review |
DescriptionThe DQ200 transmission control unit stores P173E when it detects the following condition: Gear shift — engagement fault (7th path). The fault concerns engaging a gear. The gear selector moves the shift fork hydraulically and a travel sensor reports its position. The code is stored when the gear cannot be engaged, the position does not match the command, or the movement takes too long. A stored code does not by itself prove that a part has failed. Before replacing anything, check the live data, wiring, connectors, power supply and fluid condition, and confirm the fault on the vehicle. Symptoms
Possible causes
This code is documented but not independently confirmed. Confirm it against the specific vehicle before ordering any part.
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| P173F | Gear shift — engagement fault (reverse path) | Gear selection | Review |
DescriptionThe DQ200 transmission control unit stores P173F when it detects the following condition: Gear shift — engagement fault (reverse path). The fault concerns engaging a gear. The gear selector moves the shift fork hydraulically and a travel sensor reports its position. The code is stored when the gear cannot be engaged, the position does not match the command, or the movement takes too long. A stored code does not by itself prove that a part has failed. Before replacing anything, check the live data, wiring, connectors, power supply and fluid condition, and confirm the fault on the vehicle. Symptoms
Possible causes
This code is documented but not independently confirmed. Confirm it against the specific vehicle before ordering any part.
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| P1740 | Clutch temperature — high | Clutch faults | Review |
DescriptionThe DQ200 transmission control unit stores P1740 when it detects the following condition: Clutch temperature — high. The fault concerns clutch control: engagement, adaptation, torque limitation or clutch temperature. The control unit compares the commanded clutch position or pressure with the measured value and stores the code when the difference or the adapted value leaves the permitted range. A stored code does not by itself prove that a part has failed. Before replacing anything, check the live data, wiring, connectors, power supply and fluid condition, and confirm the fault on the vehicle. Symptoms
Possible causes
This code is documented but not independently confirmed. Confirm it against the specific vehicle before ordering any part.
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| P1741 | Clutch temperature — implausible signal | Clutch faults | Review |
DescriptionThe DQ200 transmission control unit stores P1741 when it detects the following condition: Clutch temperature — implausible signal. The fault concerns clutch control: engagement, adaptation, torque limitation or clutch temperature. The control unit compares the commanded clutch position or pressure with the measured value and stores the code when the difference or the adapted value leaves the permitted range. A stored code does not by itself prove that a part has failed. Before replacing anything, check the live data, wiring, connectors, power supply and fluid condition, and confirm the fault on the vehicle. Symptoms
Possible causes
This code is documented but not independently confirmed. Confirm it against the specific vehicle before ordering any part.
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| P174A | Gear shift — position sensor fault | Gear selection | Review |
DescriptionThe DQ200 transmission control unit stores P174A when it detects the following condition: Gear shift — position sensor fault. The fault concerns engaging a gear. The gear selector moves the shift fork hydraulically and a travel sensor reports its position. The code is stored when the gear cannot be engaged, the position does not match the command, or the movement takes too long. A stored code does not by itself prove that a part has failed. Before replacing anything, check the live data, wiring, connectors, power supply and fluid condition, and confirm the fault on the vehicle. Symptoms
Possible causes
This code is documented but not independently confirmed. Confirm it against the specific vehicle before ordering any part.
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| P174B | Gear shift — position sensor fault (alternate path) | Gear selection | Review |
DescriptionThe DQ200 transmission control unit stores P174B when it detects the following condition: Gear shift — position sensor fault (alternate path). The fault concerns engaging a gear. The gear selector moves the shift fork hydraulically and a travel sensor reports its position. The code is stored when the gear cannot be engaged, the position does not match the command, or the movement takes too long. A stored code does not by itself prove that a part has failed. Before replacing anything, check the live data, wiring, connectors, power supply and fluid condition, and confirm the fault on the vehicle. Symptoms
Possible causes
This code is documented but not independently confirmed. Confirm it against the specific vehicle before ordering any part.
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| P174C | Gear shift — actuator fault | Gear selection | Review |
DescriptionThe DQ200 transmission control unit stores P174C when it detects the following condition: Gear shift — actuator fault. The fault concerns engaging a gear. The gear selector moves the shift fork hydraulically and a travel sensor reports its position. The code is stored when the gear cannot be engaged, the position does not match the command, or the movement takes too long. A stored code does not by itself prove that a part has failed. Before replacing anything, check the live data, wiring, connectors, power supply and fluid condition, and confirm the fault on the vehicle. Symptoms
Possible causes
This code is documented but not independently confirmed. Confirm it against the specific vehicle before ordering any part.
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| P174D | Clutch 1 — tolerance limit reached (alternate code) | Clutch faults | Review |
DescriptionThe DQ200 transmission control unit stores P174D when it detects the following condition: Clutch 1 — tolerance limit reached (alternate code). The fault concerns clutch control: engagement, adaptation, torque limitation or clutch temperature. The control unit compares the commanded clutch position or pressure with the measured value and stores the code when the difference or the adapted value leaves the permitted range. A stored code does not by itself prove that a part has failed. Before replacing anything, check the live data, wiring, connectors, power supply and fluid condition, and confirm the fault on the vehicle. Symptoms
Possible causes
This code is documented but not independently confirmed. Confirm it against the specific vehicle before ordering any part.
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| P174E | Gear shift — actuator monitoring fault | Gear selection | Review |
DescriptionThe DQ200 transmission control unit stores P174E when it detects the following condition: Gear shift — actuator monitoring fault. The fault concerns engaging a gear. The gear selector moves the shift fork hydraulically and a travel sensor reports its position. The code is stored when the gear cannot be engaged, the position does not match the command, or the movement takes too long. A stored code does not by itself prove that a part has failed. Before replacing anything, check the live data, wiring, connectors, power supply and fluid condition, and confirm the fault on the vehicle. Symptoms
Possible causes
This code is documented but not independently confirmed. Confirm it against the specific vehicle before ordering any part.
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| P174F | Gear shift — actuator / engagement fault (variant) | Gear selection | Review |
DescriptionThe DQ200 transmission control unit stores P174F when it detects the following condition: Gear shift — actuator / engagement fault (variant). The fault concerns engaging a gear. The gear selector moves the shift fork hydraulically and a travel sensor reports its position. The code is stored when the gear cannot be engaged, the position does not match the command, or the movement takes too long. A stored code does not by itself prove that a part has failed. Before replacing anything, check the live data, wiring, connectors, power supply and fluid condition, and confirm the fault on the vehicle. Symptoms
Possible causes
This code is documented but not independently confirmed. Confirm it against the specific vehicle before ordering any part.
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| P175D | Clutch 1 — engagement fault | Clutch faults | Review |
DescriptionThe DQ200 transmission control unit stores P175D when it detects the following condition: Clutch 1 — engagement fault. The fault concerns clutch control: engagement, adaptation, torque limitation or clutch temperature. The control unit compares the commanded clutch position or pressure with the measured value and stores the code when the difference or the adapted value leaves the permitted range. A stored code does not by itself prove that a part has failed. Before replacing anything, check the live data, wiring, connectors, power supply and fluid condition, and confirm the fault on the vehicle. Symptoms
Possible causes
This code is documented but not independently confirmed. Confirm it against the specific vehicle before ordering any part.
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| P175E | Clutch 1 — incorrect engagement / adaptation | Clutch faults | Verified |
DescriptionClutch 1 engagement or adaptation values outside expected range. Frequently stored together with judder or delayed pull-away complaints. Symptoms
Possible causes
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| P176C | Gear selector — position / regulation fault | Gear selection | Review |
DescriptionThe DQ200 transmission control unit stores P176C when it detects the following condition: Gear selector — position / regulation fault. The fault concerns engaging a gear. The gear selector moves the shift fork hydraulically and a travel sensor reports its position. The code is stored when the gear cannot be engaged, the position does not match the command, or the movement takes too long. A stored code does not by itself prove that a part has failed. Before replacing anything, check the live data, wiring, connectors, power supply and fluid condition, and confirm the fault on the vehicle. Symptoms
Possible causes
This code is documented but not independently confirmed. Confirm it against the specific vehicle before ordering any part.
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| P176D | Gear selector — position / regulation fault (alternate) | Gear selection | Review |
DescriptionThe DQ200 transmission control unit stores P176D when it detects the following condition: Gear selector — position / regulation fault (alternate). The fault concerns engaging a gear. The gear selector moves the shift fork hydraulically and a travel sensor reports its position. The code is stored when the gear cannot be engaged, the position does not match the command, or the movement takes too long. A stored code does not by itself prove that a part has failed. Before replacing anything, check the live data, wiring, connectors, power supply and fluid condition, and confirm the fault on the vehicle. Symptoms
Possible causes
This code is documented but not independently confirmed. Confirm it against the specific vehicle before ordering any part.
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| P176E | Shift fork — position fault (alternate) | Gear selection | Review |
DescriptionThe DQ200 transmission control unit stores P176E when it detects the following condition: Shift fork — position fault (alternate). The fault concerns engaging a gear. The gear selector moves the shift fork hydraulically and a travel sensor reports its position. The code is stored when the gear cannot be engaged, the position does not match the command, or the movement takes too long. A stored code does not by itself prove that a part has failed. Before replacing anything, check the live data, wiring, connectors, power supply and fluid condition, and confirm the fault on the vehicle. Symptoms
Possible causes
This code is documented but not independently confirmed. Confirm it against the specific vehicle before ordering any part.
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| P176F | Shift fork / gear engagement — position fault | Gear selection | Verified |
DescriptionPosition fault related to gear engagement / shift fork monitoring. On the DQ200 typically associated with shift actuator or sensor feedback. Symptoms
Possible causes
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| P1779 | Clutch 1 — torque limitation (alternate) | Clutch faults | Review |
DescriptionThe DQ200 transmission control unit stores P1779 when it detects the following condition: Clutch 1 — torque limitation (alternate). The fault concerns clutch control: engagement, adaptation, torque limitation or clutch temperature. The control unit compares the commanded clutch position or pressure with the measured value and stores the code when the difference or the adapted value leaves the permitted range. A stored code does not by itself prove that a part has failed. Before replacing anything, check the live data, wiring, connectors, power supply and fluid condition, and confirm the fault on the vehicle. Symptoms
Possible causes
This code is documented but not independently confirmed. Confirm it against the specific vehicle before ordering any part.
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| P177A | Clutch 2 — torque limitation (alternate) | Clutch faults | Review |
DescriptionThe DQ200 transmission control unit stores P177A when it detects the following condition: Clutch 2 — torque limitation (alternate). The fault concerns clutch control: engagement, adaptation, torque limitation or clutch temperature. The control unit compares the commanded clutch position or pressure with the measured value and stores the code when the difference or the adapted value leaves the permitted range. A stored code does not by itself prove that a part has failed. Before replacing anything, check the live data, wiring, connectors, power supply and fluid condition, and confirm the fault on the vehicle. Symptoms
Possible causes
This code is documented but not independently confirmed. Confirm it against the specific vehicle before ordering any part.
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| P177B | Clutch 1 — tolerance limit reached | Clutch faults | Review |
DescriptionThe DQ200 transmission control unit stores P177B when it detects the following condition: Clutch 1 — tolerance limit reached. The fault concerns clutch control: engagement, adaptation, torque limitation or clutch temperature. The control unit compares the commanded clutch position or pressure with the measured value and stores the code when the difference or the adapted value leaves the permitted range. A stored code does not by itself prove that a part has failed. Before replacing anything, check the live data, wiring, connectors, power supply and fluid condition, and confirm the fault on the vehicle. Symptoms
Possible causes
This code is documented but not independently confirmed. Confirm it against the specific vehicle before ordering any part.
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| P177C | Clutch 2 — tolerance limit reached | Clutch faults | Review |
DescriptionThe DQ200 transmission control unit stores P177C when it detects the following condition: Clutch 2 — tolerance limit reached. The fault concerns clutch control: engagement, adaptation, torque limitation or clutch temperature. The control unit compares the commanded clutch position or pressure with the measured value and stores the code when the difference or the adapted value leaves the permitted range. A stored code does not by itself prove that a part has failed. Before replacing anything, check the live data, wiring, connectors, power supply and fluid condition, and confirm the fault on the vehicle. Symptoms
Possible causes
This code is documented but not independently confirmed. Confirm it against the specific vehicle before ordering any part.
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| P177D | Clutch 2 — tolerance limit reached (alternate code) | Clutch faults | Review |
DescriptionThe DQ200 transmission control unit stores P177D when it detects the following condition: Clutch 2 — tolerance limit reached (alternate code). The fault concerns clutch control: engagement, adaptation, torque limitation or clutch temperature. The control unit compares the commanded clutch position or pressure with the measured value and stores the code when the difference or the adapted value leaves the permitted range. A stored code does not by itself prove that a part has failed. Before replacing anything, check the live data, wiring, connectors, power supply and fluid condition, and confirm the fault on the vehicle. Symptoms
Possible causes
This code is documented but not independently confirmed. Confirm it against the specific vehicle before ordering any part.
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| P177F | Shift fork — position fault (alternate path) | Gear selection | Review |
DescriptionThe DQ200 transmission control unit stores P177F when it detects the following condition: Shift fork — position fault (alternate path). The fault concerns engaging a gear. The gear selector moves the shift fork hydraulically and a travel sensor reports its position. The code is stored when the gear cannot be engaged, the position does not match the command, or the movement takes too long. A stored code does not by itself prove that a part has failed. Before replacing anything, check the live data, wiring, connectors, power supply and fluid condition, and confirm the fault on the vehicle. Symptoms
Possible causes
This code is documented but not independently confirmed. Confirm it against the specific vehicle before ordering any part.
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| P178B | Clutch 2 — torque limitation | Clutch faults | Review |
DescriptionThe DQ200 transmission control unit stores P178B when it detects the following condition: Clutch 2 — torque limitation. The fault concerns clutch control: engagement, adaptation, torque limitation or clutch temperature. The control unit compares the commanded clutch position or pressure with the measured value and stores the code when the difference or the adapted value leaves the permitted range. A stored code does not by itself prove that a part has failed. Before replacing anything, check the live data, wiring, connectors, power supply and fluid condition, and confirm the fault on the vehicle. Symptoms
Possible causes
This code is documented but not independently confirmed. Confirm it against the specific vehicle before ordering any part.
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| P17BF | Hydraulic pump system overload protection | Hydraulic pressure | Verified |
DescriptionStored when the transmission control unit detects that the hydraulic pump is running outside its expected pressure window, or when pressure cannot be built up within the expected time. On the DQ200 this is frequently associated with cracking of the pressure accumulator housing inside the mechatronic unit, which causes an internal hydraulic leak. Symptoms
Possible causes
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| P17C7 | Hydraulic pressure — too low | Hydraulic pressure | Review |
DescriptionThe DQ200 transmission control unit stores P17C7 when it detects the following condition: Hydraulic pressure — too low. The fault concerns the hydraulic supply of the mechatronic unit. The control unit compares the required system pressure with the measured pressure and stores the code when the pressure is too low, too high, builds up too slowly, or the pump runs outside its normal operating time. A stored code does not by itself prove that a part has failed. Before replacing anything, check the live data, wiring, connectors, power supply and fluid condition, and confirm the fault on the vehicle. Symptoms
Possible causes
This code is documented but not independently confirmed. Confirm it against the specific vehicle before ordering any part.
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| P17F00 | Hydraulic pump motor — voltage insufficient | Hydraulic pressure | Review |
DescriptionThe DQ200 transmission control unit stores P17F00 when it detects the following condition: Hydraulic pump motor — voltage insufficient. The fault concerns the hydraulic supply of the mechatronic unit. The control unit compares the required system pressure with the measured pressure and stores the code when the pressure is too low, too high, builds up too slowly, or the pump runs outside its normal operating time. A stored code does not by itself prove that a part has failed. Before replacing anything, check the live data, wiring, connectors, power supply and fluid condition, and confirm the fault on the vehicle. Symptoms
Possible causes
This code is documented but not independently confirmed. Confirm it against the specific vehicle before ordering any part.
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| P1822 | Pressure control solenoid — circuit fault | Valve / solenoid electrical | Review |
DescriptionThe DQ200 transmission control unit stores P1822 when it detects the following condition: Pressure control solenoid — circuit fault. The fault is electrical: the control unit monitors the current and resistance of each solenoid and pressure control valve, and stores the code when it detects an open circuit, a short circuit or a control current outside the expected range. A stored code does not by itself prove that a part has failed. Before replacing anything, check the live data, wiring, connectors, power supply and fluid condition, and confirm the fault on the vehicle. Symptoms
Possible causes
This code is documented but not independently confirmed. Confirm it against the specific vehicle before ordering any part.
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| P1850 | Hydraulic pump — performance fault | Hydraulic pressure | Review |
DescriptionThe DQ200 transmission control unit stores P1850 when it detects the following condition: Hydraulic pump — performance fault. The fault concerns the hydraulic supply of the mechatronic unit. The control unit compares the required system pressure with the measured pressure and stores the code when the pressure is too low, too high, builds up too slowly, or the pump runs outside its normal operating time. A stored code does not by itself prove that a part has failed. Before replacing anything, check the live data, wiring, connectors, power supply and fluid condition, and confirm the fault on the vehicle. Symptoms
Possible causes
This code is documented but not independently confirmed. Confirm it against the specific vehicle before ordering any part.
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| P1851 | Hydraulic pump — circuit fault | Hydraulic pressure | Review |
DescriptionThe DQ200 transmission control unit stores P1851 when it detects the following condition: Hydraulic pump — circuit fault. The fault concerns the hydraulic supply of the mechatronic unit. The control unit compares the required system pressure with the measured pressure and stores the code when the pressure is too low, too high, builds up too slowly, or the pump runs outside its normal operating time. A stored code does not by itself prove that a part has failed. Before replacing anything, check the live data, wiring, connectors, power supply and fluid condition, and confirm the fault on the vehicle. Symptoms
Possible causes
This code is documented but not independently confirmed. Confirm it against the specific vehicle before ordering any part.
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| P1853 | Pressure accumulator — pressure fault | Hydraulic pressure | Review |
DescriptionThe DQ200 transmission control unit stores P1853 when it detects the following condition: Pressure accumulator — pressure fault. The fault concerns the hydraulic supply of the mechatronic unit. The control unit compares the required system pressure with the measured pressure and stores the code when the pressure is too low, too high, builds up too slowly, or the pump runs outside its normal operating time. A stored code does not by itself prove that a part has failed. Before replacing anything, check the live data, wiring, connectors, power supply and fluid condition, and confirm the fault on the vehicle. Symptoms
Possible causes
This code is documented but not independently confirmed. Confirm it against the specific vehicle before ordering any part.
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| P1882 | Mechatronic unit — internal fault | Internal control unit (TCU) | Review |
DescriptionThe DQ200 transmission control unit stores P1882 when it detects the following condition: Mechatronic unit — internal fault. The fault originates in the transmission control electronics integrated into the mechatronic unit. The unit's self-diagnosis has detected an internal error, an implausible internal value or a software problem. A stored code does not by itself prove that a part has failed. Before replacing anything, check the live data, wiring, connectors, power supply and fluid condition, and confirm the fault on the vehicle. Symptoms
Possible causes
This code is documented but not independently confirmed. Confirm it against the specific vehicle before ordering any part.
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| P1895 | Clutch 1 — torque limitation | Clutch faults | Verified |
DescriptionTorque limitation recorded specifically for clutch 1. Often linked to clutch adaptation or hydraulic supply issues on the DQ200 dry clutch pack. Symptoms
Possible causes
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| P1898 | Hydraulic pressure — insufficient / implausible (variant) | Hydraulic pressure | Review |
DescriptionThe DQ200 transmission control unit stores P1898 when it detects the following condition: Hydraulic pressure — insufficient / implausible (variant). The fault concerns the hydraulic supply of the mechatronic unit. The control unit compares the required system pressure with the measured pressure and stores the code when the pressure is too low, too high, builds up too slowly, or the pump runs outside its normal operating time. A stored code does not by itself prove that a part has failed. Before replacing anything, check the live data, wiring, connectors, power supply and fluid condition, and confirm the fault on the vehicle. Symptoms
Possible causes
This code is documented but not independently confirmed. Confirm it against the specific vehicle before ordering any part.
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| P1899 | Hydraulic pressure / function restriction (variant) | Hydraulic pressure | Review |
DescriptionThe DQ200 transmission control unit stores P1899 when it detects the following condition: Hydraulic pressure / function restriction (variant). The fault concerns the hydraulic supply of the mechatronic unit. The control unit compares the required system pressure with the measured pressure and stores the code when the pressure is too low, too high, builds up too slowly, or the pump runs outside its normal operating time. A stored code does not by itself prove that a part has failed. Before replacing anything, check the live data, wiring, connectors, power supply and fluid condition, and confirm the fault on the vehicle. Symptoms
Possible causes
This code is documented but not independently confirmed. Confirm it against the specific vehicle before ordering any part.
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| P189C | Function restriction due to insufficient pressure build-up | Hydraulic pressure | Verified |
DescriptionStored when the hydraulic system cannot reach or maintain the pressure required for correct clutch and shift operation. Commonly stored together with P17BF on the DQ200 when the pressure accumulator housing is cracked, but can also be triggered by other hydraulic or electrical causes. Symptoms
Possible causes
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| P2765 | Input / turbine speed sensor B — circuit | Speed sensor | Review |
DescriptionThe DQ200 transmission control unit stores P2765 when it detects the following condition: Input / turbine speed sensor B — circuit. The fault concerns a speed signal. The control unit needs the input (clutch/turbine) and output shaft speeds to control shifts and clutch slip, and stores the code when a signal is missing, implausible or electrically faulty. A stored code does not by itself prove that a part has failed. Before replacing anything, check the live data, wiring, connectors, power supply and fluid condition, and confirm the fault on the vehicle. Symptoms
Possible causes
This code is documented but not independently confirmed. Confirm it against the specific vehicle before ordering any part.
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| P2797 | Auxiliary transmission fluid pump A — performance / stuck off | Hydraulic pressure | Review |
DescriptionThe DQ200 transmission control unit stores P2797 when it detects the following condition: Auxiliary transmission fluid pump A — performance / stuck off. The fault concerns the hydraulic supply of the mechatronic unit. The control unit compares the required system pressure with the measured pressure and stores the code when the pressure is too low, too high, builds up too slowly, or the pump runs outside its normal operating time. A stored code does not by itself prove that a part has failed. Before replacing anything, check the live data, wiring, connectors, power supply and fluid condition, and confirm the fault on the vehicle. Symptoms
Possible causes
This code is documented but not independently confirmed. Confirm it against the specific vehicle before ordering any part.
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| P279700 | Auxiliary transmission fluid pump A — performance / stuck off | Hydraulic pressure | Review |
DescriptionThe DQ200 transmission control unit stores P279700 when it detects the following condition: Auxiliary transmission fluid pump A — performance / stuck off. The fault concerns the hydraulic supply of the mechatronic unit. The control unit compares the required system pressure with the measured pressure and stores the code when the pressure is too low, too high, builds up too slowly, or the pump runs outside its normal operating time. A stored code does not by itself prove that a part has failed. Before replacing anything, check the live data, wiring, connectors, power supply and fluid condition, and confirm the fault on the vehicle. Symptoms
Possible causes
This code is documented but not independently confirmed. Confirm it against the specific vehicle before ordering any part.
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| P2849 | Clutch actuator — fault (variant 9) | Clutch faults | Review |
DescriptionThe DQ200 transmission control unit stores P2849 when it detects the following condition: Clutch actuator — fault (variant 9). The fault concerns clutch control: engagement, adaptation, torque limitation or clutch temperature. The control unit compares the commanded clutch position or pressure with the measured value and stores the code when the difference or the adapted value leaves the permitted range. A stored code does not by itself prove that a part has failed. Before replacing anything, check the live data, wiring, connectors, power supply and fluid condition, and confirm the fault on the vehicle. Symptoms
Possible causes
This code is documented but not independently confirmed. Confirm it against the specific vehicle before ordering any part.
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| P284A | Clutch actuator — fault | Clutch faults | Review |
DescriptionThe DQ200 transmission control unit stores P284A when it detects the following condition: Clutch actuator — fault. The fault concerns clutch control: engagement, adaptation, torque limitation or clutch temperature. The control unit compares the commanded clutch position or pressure with the measured value and stores the code when the difference or the adapted value leaves the permitted range. A stored code does not by itself prove that a part has failed. Before replacing anything, check the live data, wiring, connectors, power supply and fluid condition, and confirm the fault on the vehicle. Symptoms
Possible causes
This code is documented but not independently confirmed. Confirm it against the specific vehicle before ordering any part.
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| P284B | Clutch actuator — fault (variant B) | Clutch faults | Review |
DescriptionThe DQ200 transmission control unit stores P284B when it detects the following condition: Clutch actuator — fault (variant B). The fault concerns clutch control: engagement, adaptation, torque limitation or clutch temperature. The control unit compares the commanded clutch position or pressure with the measured value and stores the code when the difference or the adapted value leaves the permitted range. A stored code does not by itself prove that a part has failed. Before replacing anything, check the live data, wiring, connectors, power supply and fluid condition, and confirm the fault on the vehicle. Symptoms
Possible causes
This code is documented but not independently confirmed. Confirm it against the specific vehicle before ordering any part.
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| P284C | Clutch actuator — fault (variant C) | Clutch faults | Review |
DescriptionThe DQ200 transmission control unit stores P284C when it detects the following condition: Clutch actuator — fault (variant C). The fault concerns clutch control: engagement, adaptation, torque limitation or clutch temperature. The control unit compares the commanded clutch position or pressure with the measured value and stores the code when the difference or the adapted value leaves the permitted range. A stored code does not by itself prove that a part has failed. Before replacing anything, check the live data, wiring, connectors, power supply and fluid condition, and confirm the fault on the vehicle. Symptoms
Possible causes
This code is documented but not independently confirmed. Confirm it against the specific vehicle before ordering any part.
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| P284D | Clutch actuator — fault (variant D) | Clutch faults | Review |
DescriptionThe DQ200 transmission control unit stores P284D when it detects the following condition: Clutch actuator — fault (variant D). The fault concerns clutch control: engagement, adaptation, torque limitation or clutch temperature. The control unit compares the commanded clutch position or pressure with the measured value and stores the code when the difference or the adapted value leaves the permitted range. A stored code does not by itself prove that a part has failed. Before replacing anything, check the live data, wiring, connectors, power supply and fluid condition, and confirm the fault on the vehicle. Symptoms
Possible causes
This code is documented but not independently confirmed. Confirm it against the specific vehicle before ordering any part.
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| P284E | Clutch actuator — fault (variant E) | Clutch faults | Review |
DescriptionThe DQ200 transmission control unit stores P284E when it detects the following condition: Clutch actuator — fault (variant E). The fault concerns clutch control: engagement, adaptation, torque limitation or clutch temperature. The control unit compares the commanded clutch position or pressure with the measured value and stores the code when the difference or the adapted value leaves the permitted range. A stored code does not by itself prove that a part has failed. Before replacing anything, check the live data, wiring, connectors, power supply and fluid condition, and confirm the fault on the vehicle. Symptoms
Possible causes
This code is documented but not independently confirmed. Confirm it against the specific vehicle before ordering any part.
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| P284F | Clutch actuator — fault (variant F) | Clutch faults | Review |
DescriptionThe DQ200 transmission control unit stores P284F when it detects the following condition: Clutch actuator — fault (variant F). The fault concerns clutch control: engagement, adaptation, torque limitation or clutch temperature. The control unit compares the commanded clutch position or pressure with the measured value and stores the code when the difference or the adapted value leaves the permitted range. A stored code does not by itself prove that a part has failed. Before replacing anything, check the live data, wiring, connectors, power supply and fluid condition, and confirm the fault on the vehicle. Symptoms
Possible causes
This code is documented but not independently confirmed. Confirm it against the specific vehicle before ordering any part.
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| P2850 | Clutch actuator — performance fault | Clutch faults | Review |
DescriptionThe DQ200 transmission control unit stores P2850 when it detects the following condition: Clutch actuator — performance fault. The fault concerns clutch control: engagement, adaptation, torque limitation or clutch temperature. The control unit compares the commanded clutch position or pressure with the measured value and stores the code when the difference or the adapted value leaves the permitted range. A stored code does not by itself prove that a part has failed. Before replacing anything, check the live data, wiring, connectors, power supply and fluid condition, and confirm the fault on the vehicle. Symptoms
Possible causes
This code is documented but not independently confirmed. Confirm it against the specific vehicle before ordering any part.
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| U0101 | Lost communication with transmission control module (TCM) | Communication | Verified |
DescriptionThe transmission control module is not communicating on the CAN network. Symptoms can include the absence of a gear indicator on the dashboard, the transmission refusing to shift, and diagnostic equipment being unable to connect to the transmission control unit. Symptoms
Possible causes
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| U1400 | Powertrain data bus / communication fault (VAG-specific variant) | Communication | Review |
DescriptionThe DQ200 transmission control unit stores U1400 when it detects the following condition: Powertrain data bus / communication fault (VAG-specific variant). The fault concerns data communication between the transmission control unit and other control units on the powertrain CAN bus. The code is stored when messages are missing or corrupted, or the bus hardware reports an error. A stored code does not by itself prove that a part has failed. Before replacing anything, check the live data, wiring, connectors, power supply and fluid condition, and confirm the fault on the vehicle. Symptoms
Possible causes
This code is documented but not independently confirmed. Confirm it against the specific vehicle before ordering any part.
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DQ200 fault-code categories
Codes are grouped by the system or component they relate to. Counts show how many codes fall into each category.
Gear selection (22)
The fault concerns engaging a gear. The gear selector moves the shift fork hydraulically and a travel sensor reports its position. The code is stored when the gear cannot be engaged, the position does not match the command, or the movement takes too long.
Clutch faults (22)
The fault concerns clutch control: engagement, adaptation, torque limitation or clutch temperature. The control unit compares the commanded clutch position or pressure with the measured value and stores the code when the difference or the adapted value leaves the permitted range.
Hydraulic pressure (13)
The fault concerns the hydraulic supply of the mechatronic unit. The control unit compares the required system pressure with the measured pressure and stores the code when the pressure is too low, too high, builds up too slowly, or the pump runs outside its normal operating time.
Internal control unit (TCU) (6)
The fault originates in the transmission control electronics integrated into the mechatronic unit. The unit's self-diagnosis has detected an internal error, an implausible internal value or a software problem.
Gear ratio / gear loss (6)
This is a mechanical plausibility check: the control unit compares the input and output shaft speeds with the ratio expected for the selected gear. The code is stored when the calculated ratio does not match or a gear drops out unexpectedly.
Pressure sensor (2)
The fault concerns a pressure sensor or pressure switch in the transmission. The control unit uses these signals for clutch and system pressure control, and stores the code when the signal is out of range, too low or implausible.
Valve / solenoid electrical (2)
The fault is electrical: the control unit monitors the current and resistance of each solenoid and pressure control valve, and stores the code when it detects an open circuit, a short circuit or a control current outside the expected range.
Communication (2)
The fault concerns data communication between the transmission control unit and other control units on the powertrain CAN bus. The code is stored when messages are missing or corrupted, or the bus hardware reports an error.
Voltage / power supply (1)
The fault concerns the supply voltage of the transmission control unit. If the voltage is too low, the unit cannot reliably drive the solenoids and the pump, and it may switch to emergency mode.
Speed sensor (1)
The fault concerns a speed signal. The control unit needs the input (clutch/turbine) and output shaft speeds to control shifts and clutch slip, and stores the code when a signal is missing, implausible or electrically faulty.
Related pages for the DQ200
DQ200 repair
Symptoms, mechatronic issues and what repair involves for this family.
DQ200 mechatronics
Replacement mechatronic unit and exchange options for this family.
DQ200 parts
Selected parts most often involved in repair for this family.
Full fault-code database
All documented codes across every covered family.
DQ200 fault-code questions
How many fault codes are documented for the DQ200?
The number shown on this page reflects the codes currently documented for the DQ200 in our reference. The database is extended as further documentation is confirmed.
Are DQ200 codes the same as codes on other DSG families?
Some codes overlap in format, but the DQ200 has its own hydraulic and clutch design, so the meaning and the likely cause can differ from other families. Always read a code in the context of the family.
Can you supply the part indicated by a DQ200 code?
We supply mechatronic assemblies and selected parts for the DQ200. Send us the code and the vehicle details and we will confirm the correct unit or part by email.
Have a DQ200 fault code?
Send us the code and the vehicle details and we will confirm the correct DQ200 unit or part by email.