DQ250 mechatronic replacement unit
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.
What the DQ250 mechatronic does
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 |
Contents of the DQ250 mechatronic assembly
The mechatronic assembly combines the hydraulic control unit and the electronic control unit in one housing. A replacement unit is supplied complete, ready to be fitted and adapted to the vehicle.
Hydraulic control unit
Valve body, solenoids and the pressure regulation that operates the clutches and shift forks.
Electronic control unit
The transmission control unit and its sensors, integrated with the hydraulic side in one assembly.
Actuators and sensors
The solenoids, speed sensors and position sensors that let the control unit operate and monitor the transmission.
Housing and connector
The machined housing and the electrical connector through which the unit communicates with the vehicle.
Two ways to source the DQ250 unit
Both options are agreed manually by email. There is no automated core deposit and no online payment.
- Replacement unit. You receive a mechatronic assembly and keep your original unit. The simplest option when the original is not serviceable or not required back.
- Exchange unit. You receive a unit and return your original. Exchange is agreed by email and is marked on the quotation request form.
- Fitment and adaptation. The replacement unit is adapted to the vehicle after fitting, which requires a suitable diagnostic tool. This is confirmed in the quotation reply.
DQ250 fault codes and repair information
The fault codes and repair pages for this family help confirm which unit 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 mechatronic unit
Prices are confirmed per request, because the correct unit depends on the transmission generation and the vehicle.
DQ250 DSG mechatronic unit — 02E927770
Refurbished DSG mechatronic unit for the DQ250 (6-speed wet DSG), OEM part number 02E927770 (02E 927 770). Supplied as a complete assembly with the integrated control electronics.
DQ250 DSG mechatronic unit — 02E927770E
Refurbished DSG mechatronic unit for the DQ250 (6-speed wet DSG), OEM part number 02E927770E (02E 927 770 E). Supplied as a complete assembly with the integrated control electronics.
DQ250 DSG mechatronic unit — 02E927770G
Refurbished DSG mechatronic unit for the DQ250 (6-speed wet DSG), OEM part number 02E927770G (02E 927 770 G). Supplied as a complete assembly with the integrated control electronics.
DQ250 DSG mechatronic unit — 02E927770K
Refurbished DSG mechatronic unit for the DQ250 (6-speed wet DSG), OEM part number 02E927770K (02E 927 770 K). Supplied as a complete assembly with the integrated control electronics.
DQ250 DSG mechatronic unit — 02E927770L
Refurbished DSG mechatronic unit for the DQ250 (6-speed wet DSG), OEM part number 02E927770L (02E 927 770 L). Supplied as a complete assembly with the integrated control electronics.
DQ250 DSG mechatronic unit — 02E927770M
Refurbished DSG mechatronic unit for the DQ250 (6-speed wet DSG), OEM part number 02E927770M (02E 927 770 M). Supplied as a complete assembly with the integrated control electronics.
DQ250 DSG mechatronic unit — 02E927770S
Refurbished DSG mechatronic unit for the DQ250 (6-speed wet DSG), OEM part number 02E927770S (02E 927 770 S). Supplied as a complete assembly with the integrated control electronics.
DQ250 DSG mechatronic unit — 02E927770AA
Refurbished DSG mechatronic unit for the DQ250 (6-speed wet DSG), OEM part number 02E927770AA (02E 927 770 AA). Supplied as a complete assembly with the integrated control electronics.
DQ250 DSG mechatronic unit — 02E927770AD
Refurbished DSG mechatronic unit for the DQ250 (6-speed wet DSG), OEM part number 02E927770AD (02E 927 770 AD). Supplied as a complete assembly with the integrated control electronics.
DQ250 DSG mechatronic unit — 02E927770AE
Refurbished DSG mechatronic unit for the DQ250 (6-speed wet DSG), OEM part number 02E927770AE (02E 927 770 AE). Supplied as a complete assembly with the integrated control electronics.
DQ250 DSG mechatronic unit — 02E927770AG
Refurbished DSG mechatronic unit for the DQ250 (6-speed wet DSG), OEM part number 02E927770AG (02E 927 770 AG). Supplied as a complete assembly with the integrated control electronics.
DQ250 DSG mechatronic unit — 02E927770AJ
Refurbished DSG mechatronic unit for the DQ250 (6-speed wet DSG), OEM part number 02E927770AJ (02E 927 770 AJ). Supplied as a complete assembly with the integrated control electronics.
DQ250 DSG mechatronic unit — 02E927770AK
Refurbished DSG mechatronic unit for the DQ250 (6-speed wet DSG), OEM part number 02E927770AK (02E 927 770 AK). Supplied as a complete assembly with the integrated control electronics.
DQ250 DSG mechatronic unit — 02E927770AL
Refurbished DSG mechatronic unit for the DQ250 (6-speed wet DSG), OEM part number 02E927770AL (02E 927 770 AL). Supplied as a complete assembly with the integrated control electronics.
DQ250 DSG mechatronic unit — 02E927770AM
Refurbished DSG mechatronic unit for the DQ250 (6-speed wet DSG), OEM part number 02E927770AM (02E 927 770 AM). Supplied as a complete assembly with the integrated control electronics.
DQ250 DSG mechatronic unit — 02E927770AN
Refurbished DSG mechatronic unit for the DQ250 (6-speed wet DSG), OEM part number 02E927770AN (02E 927 770 AN). Supplied as a complete assembly with the integrated control electronics.
DQ250 DSG mechatronic unit — 02E927770AO
Refurbished DSG mechatronic unit for the DQ250 (6-speed wet DSG), OEM part number 02E927770AO (02E 927 770 AO). Supplied as a complete assembly with the integrated control electronics.
DQ250 DSG mechatronic unit — 02E927770AQ
Refurbished DSG mechatronic unit for the DQ250 (6-speed wet DSG), OEM part number 02E927770AQ (02E 927 770 AQ). Supplied as a complete assembly with the integrated control electronics.
DQ250 DSG mechatronic unit — 02E927770AS
Refurbished DSG mechatronic unit for the DQ250 (6-speed wet DSG), OEM part number 02E927770AS (02E 927 770 AS). Supplied as a complete assembly with the integrated control electronics.
DQ250 DSG mechatronic unit — 02E927770AT
Refurbished DSG mechatronic unit for the DQ250 (6-speed wet DSG), OEM part number 02E927770AT (02E 927 770 AT). Supplied as a complete assembly with the integrated control electronics.
DQ250 DSG mechatronic unit — 02E325025
Refurbished DSG mechatronic unit for the DQ250 (6-speed wet DSG), OEM part number 02E325025 (02E 325 025). Supplied as a complete assembly with the integrated control electronics.
DQ250 DSG mechatronic unit — 02E325025AA
Refurbished DSG mechatronic unit for the DQ250 (6-speed wet DSG), OEM part number 02E325025AA (02E 325 025 AA). Supplied as a complete assembly with the integrated control electronics.
DQ250 DSG mechatronic unit — 02E325025AD
Refurbished DSG mechatronic unit for the DQ250 (6-speed wet DSG), OEM part number 02E325025AD (02E 325 025 AD). Supplied as a complete assembly with the integrated control electronics.
DQ250 DSG mechatronic unit — 02E325025AE
Refurbished DSG mechatronic unit for the DQ250 (6-speed wet DSG), OEM part number 02E325025AE (02E 325 025 AE). Supplied as a complete assembly with the integrated control electronics.
DQ250 DSG mechatronic unit — 02E325025AG
Refurbished DSG mechatronic unit for the DQ250 (6-speed wet DSG), OEM part number 02E325025AG (02E 325 025 AG). Supplied as a complete assembly with the integrated control electronics.
DQ250 DSG mechatronic unit — 02E325025AJ
Refurbished DSG mechatronic unit for the DQ250 (6-speed wet DSG), OEM part number 02E325025AJ (02E 325 025 AJ). Supplied as a complete assembly with the integrated control electronics.
DQ250 DSG mechatronic unit — 02E325025AK
Refurbished DSG mechatronic unit for the DQ250 (6-speed wet DSG), OEM part number 02E325025AK (02E 325 025 AK). Supplied as a complete assembly with the integrated control electronics.
DQ250 DSG mechatronic unit — 02E325025AL
Refurbished DSG mechatronic unit for the DQ250 (6-speed wet DSG), OEM part number 02E325025AL (02E 325 025 AL). Supplied as a complete assembly with the integrated control electronics.
DQ250 DSG mechatronic unit — 02E325025AM
Refurbished DSG mechatronic unit for the DQ250 (6-speed wet DSG), OEM part number 02E325025AM (02E 325 025 AM). Supplied as a complete assembly with the integrated control electronics.
DQ250 DSG mechatronic unit — 02E325025AN
Refurbished DSG mechatronic unit for the DQ250 (6-speed wet DSG), OEM part number 02E325025AN (02E 325 025 AN). Supplied as a complete assembly with the integrated control electronics.
DQ250 DSG mechatronic unit — 02E325025AO
Refurbished DSG mechatronic unit for the DQ250 (6-speed wet DSG), OEM part number 02E325025AO (02E 325 025 AO). Supplied as a complete assembly with the integrated control electronics.
DQ250 DSG mechatronic unit — 02E325025AQ
Refurbished DSG mechatronic unit for the DQ250 (6-speed wet DSG), OEM part number 02E325025AQ (02E 325 025 AQ). Supplied as a complete assembly with the integrated control electronics.
DQ250 DSG mechatronic unit — 02E325025AS
Refurbished DSG mechatronic unit for the DQ250 (6-speed wet DSG), OEM part number 02E325025AS (02E 325 025 AS). Supplied as a complete assembly with the integrated control electronics.
DQ250 DSG mechatronic unit — 02E325025AT
Refurbished DSG mechatronic unit for the DQ250 (6-speed wet DSG), OEM part number 02E325025AT (02E 325 025 AT). Supplied as a complete assembly with the integrated control electronics.
DQ250 DSG mechatronic unit — 02E300053G
Refurbished DSG mechatronic unit for the DQ250 (6-speed wet DSG), OEM part number 02E300053G (02E 300 053 G). Supplied as a complete assembly with the integrated control electronics.
DQ250 DSG mechatronic unit — 02E300053H
Refurbished DSG mechatronic unit for the DQ250 (6-speed wet DSG), OEM part number 02E300053H (02E 300 053 H). Supplied as a complete assembly with the integrated control electronics.
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 mechatronic questions
Is the DQ250 mechatronic supplied with the electronics?
Yes. The replacement assembly combines the hydraulic control unit and the electronic control unit in one housing, supplied complete.
How does exchange work for the DQ250?
Exchange is agreed manually by email. You mark the exchange checkbox on the quotation request form and we confirm the terms in the reply. No core deposit is taken online.
Does the DQ250 unit need coding after fitting?
The replacement unit is adapted to the vehicle after fitting, which requires a suitable diagnostic tool. This is confirmed in the quotation reply.
Send us your DQ250 details
Tell us the vehicle, the part number and whether you want a replacement or exchange unit, and we will confirm the correct DQ250 assembly by email.