DQ381 DSG parts
The DQ381 is a 7-speed dual-clutch transmission with a wet clutch, also known as the 0GC. It is a later wet-clutch family used across a wide range of Volkswagen Group models.
This page covers the symptoms most commonly associated with DQ381 faults, the mechatronic issues behind them, the fault codes that accompany them, and how to identify the correct mechatronic assembly or part.
Why DQ381 parts are family-specific
The DQ381 uses a wet dual clutch and shares the general wet-clutch principle: the clutches run in oil, which cools them and supports higher torque and frequent use.
Faults on this family often involve hydraulic control, sensor behaviour and the transmission control unit, since the control strategy depends on precise feedback from the unit’s sensors.
The mechatronic assembly integrates the hydraulics and the electronics. When a valve, solenoid or sensor drifts, the symptoms usually appear first as shift-quality complaints.
| Transmission family | DQ381 (7-speed wet DSG) |
|---|---|
| Also known as | 0GC |
| Clutch type | Wet dual clutch |
| Gears | 7 forward |
| Factory code | 0GC |
DQ381 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.
DQ381 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 |
|---|---|---|---|
| P0607 | Control module — implausible operation / hardware related | Internal control unit (TCU) | Review |
DescriptionThe DQ381 transmission control unit stores P0607 when it detects the following condition: Control module — implausible operation / hardware related. 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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| P0715 | Input / turbine speed sensor A — circuit | Speed sensor | Review |
DescriptionThe DQ381 transmission control unit stores P0715 when it detects the following condition: Input / turbine speed sensor A — 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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| P074A | Gear 1 — incorrect ratio | Gear ratio / gear loss | Review |
DescriptionThe DQ381 transmission control unit stores P074A 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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| P0810 | Clutch position control error | Clutch faults | Review |
DescriptionThe DQ381 transmission control unit stores P0810 when it detects the following condition: Clutch position control error. 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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| P0C2900 | Auxiliary transmission fluid pump — driver circuit / activation implausible | Hydraulic pressure | Review |
DescriptionThe DQ381 transmission control unit stores P0C2900 when it detects the following condition: Auxiliary transmission fluid pump — driver circuit / activation implausible. 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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| P0C2B00 | Auxiliary transmission fluid pump — performance / control fault | Hydraulic pressure | Review |
DescriptionThe DQ381 transmission control unit stores P0C2B00 when it detects the following condition: Auxiliary transmission fluid pump — performance / control 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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| P1735 | Clutch 1 position sensor — electrical malfunction | Clutch faults | Review |
DescriptionThe DQ381 transmission control unit stores P1735 when it detects the following condition: Clutch 1 position sensor — electrical 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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| P1736 | Clutch 2 position sensor — electrical malfunction | Clutch faults | Review |
DescriptionThe DQ381 transmission control unit stores P1736 when it detects the following condition: Clutch 2 position sensor — electrical 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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| P173E | Valve 1 — partial transmission 1 electrical malfunction | Valve / solenoid electrical | Review |
DescriptionThe DQ381 transmission control unit stores P173E when it detects the following condition: Valve 1 — partial transmission 1 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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| P173F | Valve 2 — partial transmission 1 electrical malfunction | Valve / solenoid electrical | Review |
DescriptionThe DQ381 transmission control unit stores P173F when it detects the following condition: Valve 2 — partial transmission 1 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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| P174A | Valve 3 — partial transmission 1 electrical malfunction | Valve / solenoid electrical | Review |
DescriptionThe DQ381 transmission control unit stores P174A when it detects the following condition: Valve 3 — partial transmission 1 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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| P174C | Valve 1 — partial transmission 2 electrical malfunction | Valve / solenoid electrical | Review |
DescriptionThe DQ381 transmission control unit stores P174C when it detects the following condition: Valve 1 — partial transmission 2 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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| P174D | Valve 2 — partial transmission 2 electrical malfunction | Valve / solenoid electrical | Review |
DescriptionThe DQ381 transmission control unit stores P174D when it detects the following condition: Valve 2 — partial transmission 2 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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| P174E | Valve 3 — partial transmission 2 electrical malfunction | Valve / solenoid electrical | Review |
DescriptionThe DQ381 transmission control unit stores P174E when it detects the following condition: Valve 3 — partial transmission 2 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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| P175D | Clutch 1 — opens unintentionally | Clutch faults | Review |
DescriptionThe DQ381 transmission control unit stores P175D when it detects the following condition: Clutch 1 — opens unintentionally. 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 — closes unintentionally | Clutch faults | Review |
DescriptionThe DQ381 transmission control unit stores P175E when it detects the following condition: Clutch 1 — closes unintentionally. 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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| P176A | Gear selector 1 — cannot be regulated | Gear selection | Review |
DescriptionThe DQ381 transmission control unit stores P176A when it detects the following condition: Gear selector 1 — cannot be regulated. 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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| P176B | Gear selector 2 — cannot be regulated | Gear selection | Review |
DescriptionThe DQ381 transmission control unit stores P176B when it detects the following condition: Gear selector 2 — cannot be regulated. 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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| P176C | Gear selector 3 — cannot be regulated | Gear selection | Review |
DescriptionThe DQ381 transmission control unit stores P176C when it detects the following condition: Gear selector 3 — cannot be regulated. 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 4 — cannot be regulated | Gear selection | Review |
DescriptionThe DQ381 transmission control unit stores P176D when it detects the following condition: Gear selector 4 — cannot be regulated. 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 | Clutch 2 — opens unintentionally | Clutch faults | Review |
DescriptionThe DQ381 transmission control unit stores P176E when it detects the following condition: Clutch 2 — opens unintentionally. 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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| P176F | Clutch 2 — closes unintentionally | Clutch faults | Review |
DescriptionThe DQ381 transmission control unit stores P176F when it detects the following condition: Clutch 2 — closes unintentionally. 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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| P179C | Main pressure valve — electrical malfunction | Valve / solenoid electrical | Review |
DescriptionThe DQ381 transmission control unit stores P179C when it detects the following condition: Main pressure valve — 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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| P17BF | Hydraulic pump system overload protection | Hydraulic pressure | Review |
DescriptionThe DQ381 transmission control unit stores P17BF when it detects the following condition: Hydraulic pump system overload protection. 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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| P187E | Auxiliary transmission hydraulic pump — related control / leakage fault | Hydraulic pressure | Review |
DescriptionThe DQ381 transmission control unit stores P187E when it detects the following condition: Auxiliary transmission hydraulic pump — related control / leakage 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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| P189A | Hydraulic pressure / auxiliary pump fault (specialist variant) | Hydraulic pressure | Review |
DescriptionThe DQ381 transmission control unit stores P189A when it detects the following condition: Hydraulic pressure / auxiliary pump fault (specialist 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 — insufficient pressure build-up | Hydraulic pressure | Review |
DescriptionThe DQ381 transmission control unit stores P189C when it detects the following condition: Function restriction — insufficient pressure build-up. 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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| P2711 | Unexpected mechanical gear disengagement | Gear ratio / gear loss | Review |
DescriptionThe DQ381 transmission control unit stores P2711 when it detects the following condition: Unexpected mechanical gear disengagement. 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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| P2716 | Pressure control solenoid — performance / electrical fault | Valve / solenoid electrical | Review |
DescriptionThe DQ381 transmission control unit stores P2716 when it detects the following condition: Pressure control solenoid — performance / electrical 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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| P2765 | Input speed sensor 2 — electrical fault | Speed sensor | Review |
DescriptionThe DQ381 transmission control unit stores P2765 when it detects the following condition: Input speed sensor 2 — electrical 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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| U0101 | Lost communication with TCM | Communication | Review |
DescriptionThe DQ381 transmission control unit stores U0101 when it detects the following condition: Lost communication with TCM. 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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DQ381 parts we supply
Selected parts for this family. Prices are confirmed per request.
DQ381 clutch pressure sensor
High-quality clutch pressure sensor for the DQ381 DSG transmission — a durable alternative to low-cost sensors.
Related pages for the DQ381
DQ381 repair
Symptoms, mechatronic issues and what repair involves for this family.
DQ381 mechatronics
Replacement mechatronic unit and exchange options for this family.
DQ381 parts
Selected parts most often involved in repair for this family.
DQ381 fault codes
Every documented code for this family in one table.
DQ381 parts questions
Are DQ381 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 DQ381.
Do you supply the mechatronic assembly as well as parts?
Yes. Replacement mechatronic assemblies for the DQ381 are listed on the DQ381 mechatronics page.
Have a DQ381 part number?
Send us the part number and the vehicle details and we will confirm the correct DQ381 part by email.