DQ250 DSG parts
The DQ250 is a 6-speed dual-clutch transmission with a wet clutch, also known as the 02E. It has been used widely across the Volkswagen Group behind transversely mounted engines, and it is one of the most common DSG families in service.
This page covers the symptoms most commonly associated with DQ250 faults, the mechatronic issues behind them, the fault codes that accompany them, and how to identify the correct mechatronic assembly or part.
Why DQ250 parts are family-specific
The DQ250 uses a wet dual clutch, with the clutch packs running in an oil bath. The oil cools the clutches and carries away wear debris, which suits higher torque and heavier use than a dry clutch.
Because the clutches and the mechatronic share a hydraulic environment, the DQ250’s fault patterns often centre on hydraulic control — pressure regulation, solenoid behaviour and the sensors that feed the control unit.
The mechatronic assembly combines the hydraulic control unit and the electronics in one housing. When pressure control or a sensor drifts, the symptoms can appear as harsh shifts, delayed engagement or limp mode.
| Transmission family | DQ250 (6-speed wet DSG) |
|---|---|
| Also known as | 02E |
| Clutch type | Wet dual clutch |
| Gears | 6 forward |
| Factory code | 02E |
DQ250 parts we supply
Parts are listed per family because the hydraulic design, the clutch type and the electronics differ between DSG families. A part that fits one family will not necessarily fit another.
Sensors
Speed and position sensors used by the control unit to monitor the transmission.
Solenoids and valves
The electrically operated valves that direct hydraulic pressure inside the mechatronic unit.
Valve body components
Internal hydraulic components for the mechatronic assembly where a part-level repair is appropriate.
Service components
Filters, seals and service items relevant to the family.
When a part and when a mechatronic assembly
The right choice depends on the fault. We confirm it from the codes, the symptoms and the part number before quoting.
- Part-level repair. When a single sensor, solenoid or service component is at fault, a part-level replacement can be appropriate.
- Assembly-level replacement. When the fault involves the hydraulic control or the electronics as a whole, a replacement mechatronic assembly is usually the practical option.
- Confirmation before ordering. Send the fault codes and the part number and we will confirm which approach applies to your vehicle.
DQ250 fault codes and repair information
The fault codes and repair pages for this family help confirm which part is required before you order.
| Code | Description | Category | Status |
|---|---|---|---|
| 00194 | Ignition key removal lock — implausible signal | Manufacturer-specific code | Review |
DescriptionThe DQ250 transmission control unit stores 00194 when it detects the following condition: Ignition key removal lock — implausible signal. A manufacturer-specific code that relates to configuration, basic setting or data status rather than to one failed part. It often appears after a repair, a control unit replacement or software work. 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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| 01087 | Basic setting not performed | Manufacturer-specific code | Review |
DescriptionThe DQ250 transmission control unit stores 01087 when it detects the following condition: Basic setting not performed. A manufacturer-specific code that relates to configuration, basic setting or data status rather than to one failed part. It often appears after a repair, a control unit replacement or software work. 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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| 01208 | Data records in control unit altered | Manufacturer-specific code | Review |
DescriptionThe DQ250 transmission control unit stores 01208 when it detects the following condition: Data records in control unit altered. A manufacturer-specific code that relates to configuration, basic setting or data status rather than to one failed part. It often appears after a repair, a control unit replacement or software work. 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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| P0218 | Transmission overtemperature condition | Hydraulic pressure | Review |
DescriptionThe DQ250 transmission control unit stores P0218 when it detects the following condition: Transmission overtemperature condition. 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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| P0700 | Transmission control system — malfunction | Transmission control | Review |
DescriptionThe DQ250 transmission control unit stores P0700 when it detects the following condition: Transmission control system — malfunction. A general transmission control fault: the control unit has detected a malfunction in the transmission system that is not tied to one specific component. Codes stored at the same time usually point to the actual cause. 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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| P0701 | Transmission control system — range/performance | Transmission control | Review |
DescriptionThe DQ250 transmission control unit stores P0701 when it detects the following condition: Transmission control system — range/performance. A general transmission control fault: the control unit has detected a malfunction in the transmission system that is not tied to one specific component. Codes stored at the same time usually point to the actual cause. 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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| P0702 | Transmission control system — electrical malfunction | Transmission control | Review |
DescriptionThe DQ250 transmission control unit stores P0702 when it detects the following condition: Transmission control system — electrical malfunction. A general transmission control fault: the control unit has detected a malfunction in the transmission system that is not tied to one specific component. Codes stored at the same time usually point to the actual cause. 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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| P0715 | Input / turbine speed sensor A — circuit | Speed sensor | Verified |
DescriptionInput/turbine speed sensor circuit fault. On DSG this can be a sensor, wiring or mechatronic-side issue. Verify signal integrity before replacement. Symptoms
Possible causes
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| P0716 | Input / turbine speed sensor G182 — implausible signal | Speed sensor | Review |
DescriptionThe DQ250 transmission control unit stores P0716 when it detects the following condition: Input / turbine speed sensor G182 — implausible signal. 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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| P0720 | Output speed sensor — circuit fault | Speed sensor | Review |
DescriptionThe DQ250 transmission control unit stores P0720 when it detects the following condition: Output speed sensor — circuit fault. 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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| P0722 | Output speed sensor G195 — no signal | Speed sensor | Review |
DescriptionThe DQ250 transmission control unit stores P0722 when it detects the following condition: Output speed sensor G195 — no signal. 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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| P0729 | Gear 6 — incorrect ratio | Gear ratio / gear loss | Review |
DescriptionThe DQ250 transmission control unit stores P0729 when it detects the following condition: Gear 6 — incorrect ratio. 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. 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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| P0730 | Incorrect gear ratio | Gear ratio / gear loss | Review |
DescriptionThe DQ250 transmission control unit stores P0730 when it detects the following condition: Incorrect gear ratio. 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. 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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| P0731 | Gear 1 — incorrect ratio | Gear ratio / gear loss | Review |
DescriptionThe DQ250 transmission control unit stores P0731 when it detects the following condition: Gear 1 — incorrect ratio. 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. 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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| P0732 | Gear 2 — incorrect ratio | Gear ratio / gear loss | Review |
DescriptionThe DQ250 transmission control unit stores P0732 when it detects the following condition: Gear 2 — incorrect ratio. 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. 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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| P0733 | Gear 3 — incorrect ratio | Gear ratio / gear loss | Review |
DescriptionThe DQ250 transmission control unit stores P0733 when it detects the following condition: Gear 3 — incorrect ratio. 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. 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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| P0734 | Gear 4 — incorrect ratio | Gear ratio / gear loss | Review |
DescriptionThe DQ250 transmission control unit stores P0734 when it detects the following condition: Gear 4 — incorrect ratio. 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. 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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| P0735 | Gear 5 — incorrect ratio | Gear ratio / gear loss | Review |
DescriptionThe DQ250 transmission control unit stores P0735 when it detects the following condition: Gear 5 — incorrect ratio. 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. 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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| P0746 | Pressure control solenoid 1 — open/short | Valve / solenoid electrical | Review |
DescriptionThe DQ250 transmission control unit stores P0746 when it detects the following condition: Pressure control solenoid 1 — open/short. 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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| P074A | Gear 1 — incorrect ratio | Gear ratio / gear loss | Verified |
DescriptionThe control unit calculated a gear ratio outside the expected range for gear 1. On the DQ250 this can indicate clutch slip, internal hydraulic issues or a monitoring artefact. Confirm mechanically before replacing components. Symptoms
Possible causes
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| P0751 | Shift solenoid 1 N88 — open/short | Valve / solenoid electrical | Review |
DescriptionThe DQ250 transmission control unit stores P0751 when it detects the following condition: Shift solenoid 1 N88 — open/short. 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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| P0756 | Shift solenoid 2 N89 — open/short | Valve / solenoid electrical | Review |
DescriptionThe DQ250 transmission control unit stores P0756 when it detects the following condition: Shift solenoid 2 N89 — open/short. 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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| P0761 | Shift solenoid 3 N90 — open/short | Valve / solenoid electrical | Review |
DescriptionThe DQ250 transmission control unit stores P0761 when it detects the following condition: Shift solenoid 3 N90 — open/short. 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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| P0766 | Shift solenoid 4 N91 — open/short | Valve / solenoid electrical | Review |
DescriptionThe DQ250 transmission control unit stores P0766 when it detects the following condition: Shift solenoid 4 N91 — open/short. 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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| P0771 | Shift solenoid 5 N92 — open/short | Valve / solenoid electrical | Review |
DescriptionThe DQ250 transmission control unit stores P0771 when it detects the following condition: Shift solenoid 5 N92 — open/short. 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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| P0776 | Pressure control solenoid 2 — open/short | Valve / solenoid electrical | Review |
DescriptionThe DQ250 transmission control unit stores P0776 when it detects the following condition: Pressure control solenoid 2 — open/short. 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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| P079F | Transmission control / gear selector plausibility fault | Gear selection | Review |
DescriptionThe DQ250 transmission control unit stores P079F when it detects the following condition: Transmission control / gear selector plausibility 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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| P0841 | Transmission fluid pressure sensor A — range/performance | Pressure sensor | Review |
DescriptionThe DQ250 transmission control unit stores P0841 when it detects the following condition: Transmission fluid pressure sensor A — range/performance. 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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| P0842 | Transmission fluid pressure sensor A — low signal | Pressure sensor | Review |
DescriptionThe DQ250 transmission control unit stores P0842 when it detects the following condition: Transmission fluid pressure sensor A — low signal. 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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| P0868 | Transmission fluid pressure — adaptation at limit / low | Hydraulic pressure | Review |
DescriptionThe DQ250 transmission control unit stores P0868 when it detects the following condition: Transmission fluid pressure — adaptation at limit / 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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| P0962 | Pressure control valve 1 — low control current | Valve / solenoid electrical | Review |
DescriptionThe DQ250 transmission control unit stores P0962 when it detects the following condition: Pressure control valve 1 — low control current. 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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| P0966 | Pressure control valve 2 — low control current | Valve / solenoid electrical | Review |
DescriptionThe DQ250 transmission control unit stores P0966 when it detects the following condition: Pressure control valve 2 — low control current. 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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| P1707 | Interference in mechatronic module | Internal control unit (TCU) | Review |
DescriptionThe DQ250 transmission control unit stores P1707 when it detects the following condition: Interference in mechatronic module. 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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| P172A | Hydraulic pressure — too high | Hydraulic pressure | Review |
DescriptionThe DQ250 transmission control unit stores P172A when it detects the following condition: Hydraulic pressure — too high. 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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| P172B | Hydraulic pressure — too low | Hydraulic pressure | Review |
DescriptionThe DQ250 transmission control unit stores P172B 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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| P1733 | Gear selector / shift path fault | Gear selection | Review |
DescriptionThe DQ250 transmission control unit stores P1733 when it detects the following condition: Gear selector / shift path 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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| P173E | Clutch 2 pressure control malfunction | Clutch faults | Review |
DescriptionThe DQ250 transmission control unit stores P173E when it detects the following condition: Clutch 2 pressure control malfunction. 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 pressure adaptation — limit reached | Clutch faults | Review |
DescriptionThe DQ250 transmission control unit stores P1741 when it detects the following condition: Clutch pressure adaptation — 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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| P1746 | Transmission solenoid power relay — electrical malfunction | Valve / solenoid electrical | Review |
DescriptionThe DQ250 transmission control unit stores P1746 when it detects the following condition: Transmission solenoid power relay — electrical malfunction. 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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| P1748 | Transmission control module — programming error | Internal control unit (TCU) | Review |
DescriptionThe DQ250 transmission control unit stores P1748 when it detects the following condition: Transmission control module — programming error. 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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DQ250 parts we supply
Selected parts for this family. Prices are confirmed per request.
DQ250 clutch pressure sensor (02E / 0D9)
High-quality clutch pressure sensor for the DQ250 DSG transmission — a durable alternative to low-cost sensors.
DQ250 repair PCB (mechatronic control board)
High-quality replacement circuit board for repairing the DQ250 mechatronic control unit — built for durability, not a low-cost copy.
DQ250 solenoid valve kit
High-quality solenoid valve kit for the DQ250 mechatronic unit, for repairing shift and pressure-control faults.
Related pages for the DQ250
DQ250 repair
Symptoms, mechatronic issues and what repair involves for this family.
DQ250 mechatronics
Replacement mechatronic unit and exchange options for this family.
DQ250 parts
Selected parts most often involved in repair for this family.
DQ250 fault codes
Every documented code for this family in one table.
DQ250 parts questions
Are DQ250 parts interchangeable with other DSG families?
Generally no. The hydraulic design, clutch type and electronics differ between families, so parts are listed per family and should be matched to the correct one.
How do I know whether I need a part or an assembly?
It depends on the fault. Send us the fault codes, the symptoms and the part number and we will confirm which approach applies to your DQ250.
Do you supply the mechatronic assembly as well as parts?
Yes. Replacement mechatronic assemblies for the DQ250 are listed on the DQ250 mechatronics page.
Have a DQ250 part number?
Send us the part number and the vehicle details and we will confirm the correct DQ250 part by email.