In short: Faults P1735, P1736, P175D, P175E, P176E and P176F on a DQ381 DSG indicate a defect in the transmission control unit – affecting the position sensors or activation of clutch 1 and 2. Usually the complete mechatronic unit does not need replacing: Compramas repairs your original control unit at a fixed price of €320.
Is your DQ381 DSG 7-speed transmission control unit faulty and the fault memory shows fault codes such as P1735, P1736, P175D, P175E, P176E or P176F? Then there may be a defect inside the transmission control unit or the DSG mechatronics.
Typical consequences are shifting problems, clutch faults, limp mode or a vehicle with restricted driveability. In many cases, however, the complete mechatronic unit or the entire transmission does not have to be replaced.
With a professional DQ381 transmission control unit repair, your own original unit is tested, repaired and then checked. A repair can therefore be a much more economical alternative to buying a new control unit or a complete DSG mechatronic unit.
What is the DQ381 transmission?
The DQ381 is a 7-speed dual-clutch transmission from the Volkswagen Group. Depending on model, model year and version, it is used in various vehicles from Volkswagen, Audi, SEAT and Škoda.
The transmission control unit is a central part of the DSG mechatronics. It processes various sensor values and controls, among other things:
- clutch 1
- clutch 2
- gear changes
- hydraulic shifting processes
- pressure control
- transmission functions and monitoring
If an electronic defect occurs inside the DQ381 control unit, the clutches or gear changes can no longer be controlled correctly.
Typical DQ381 fault codes
With a faulty DQ381 DSG transmission control unit, the following fault codes, among others, may be stored:
- P1735 – clutch 1 position sensor, electrical fault
- P1736 – clutch 2 position sensor, electrical fault
- P175D – clutch 1 opens unintentionally
- P175E – clutch 1 closes unintentionally
- P176E – clutch 2 opens unintentionally
- P176F – clutch 2 closes unintentionally
Other faults of the DQ381 mechatronics, transmission control or clutch control can also occur.
If your fault code is not listed, it is worth asking, as further defects may be repairable depending on version and fault symptom.
Fault P1735 – clutch 1 position sensor
The fault P1735 – clutch 1 position sensor, electrical fault indicates a problem with detecting or processing the position of clutch 1.
The DQ381 transmission control unit needs this position information to open and close the clutch precisely.
If the electronic processing in the control unit is disrupted, the following symptoms, among others, can occur:
- DSG warning message
- transmission goes into limp mode
- gear changes do not work properly
- individual gears are missing
- vehicle pulls away poorly or not at all
- fault reappears after clearing
Fault P1736 – clutch 2 position sensor
Fault code P1736 – clutch 2 position sensor, electrical fault correspondingly affects the second clutch of the DQ381 transmission.
Here, too, incorrect position information can mean that the control unit can no longer control the clutch correctly.
Typical symptoms can be:
- transmission warning message
- restricted gear selection
- DSG limp mode
- jerky gear changes
- clutch problems
- sporadic or permanent faults
P175D and P175E – clutch 1 faults
With the fault codes
P175D – clutch 1 opens unintentionally
and
P175E – clutch 1 closes unintentionally
the transmission control unit detects a clutch state that does not match the requested position.
As a result, the transmission can no longer work reliably.
Possible symptoms are:
- clutch opens unexpectedly
- clutch closes unexpectedly
- vehicle judders
- gear changes become harsh
- transmission goes into limp mode
- driving is restricted
P176E and P176F – clutch 2 faults
For clutch 2, the following faults, among others, may be stored:
P176E – clutch 2 opens unintentionally
P176F – clutch 2 closes unintentionally
These faults can also indicate a fault within the DQ381 transmission control.
Depending on which clutch or gear group is affected, the fault can show itself in different ways.
Typical symptoms of a faulty DQ381 transmission control unit
A defect in the DQ381 DSG control unit can show itself through the following symptoms, among others:
- DSG warning light
- transmission fault in the instrument cluster
- transmission goes into limp mode
- vehicle no longer shifts properly
- individual gears are missing
- harsh or jerky gear changes
- clutch opens or closes unintentionally
- vehicle does not pull away properly
- fault occurs sporadically
- fault reappears after clearing
- P1735 or P1736 stored
- P175D, P175E, P176E or P176F stored
As comparable symptoms can also have other causes in the transmission, a professional diagnosis should be carried out before the repair.
Does the complete DQ381 mechatronic unit have to be replaced?
Not necessarily.
If the defect actually lies in the DQ381 transmission control unit, the existing original unit can be repaired in many cases.
This can avoid replacing a complete DSG mechatronic unit or buying a new transmission control unit.
Another advantage: you receive your own original unit back. The control unit that originally belonged to the vehicle is therefore retained.
Depending on the scope of the repair, re-coding or adaptation is therefore often not required.
Have your DQ381 transmission control unit repaired
For a repair, the existing DQ381 DSG control unit is removed and sent in.
After receipt, a professional diagnosis is carried out first. This checks whether the stated fault is present and whether a repair is technically possible.
After approval, the affected fault area is repaired.
A function test is then carried out before the repaired original unit is sent back.
Possible DQ381 part numbers
The repair may be suitable for DQ381 transmission control units with the following part numbers, among others:
0GC927711
0GC927711B
0GC927711C
0GC927711G
0GC927711H
0AK927711C
The part numbers listed are for guidance.
What always matters is the part number on the transmission control unit actually fitted.
If your part number is not listed, please contact us. Depending on the version, other DQ381 control units may be repairable.
DQ381 in VW, Audi, SEAT and Škoda
The DQ381 DSG transmission and corresponding variants are used in various vehicles of the Volkswagen Group.
Depending on model, model year and equipment, vehicles from the following manufacturers, among others, may be affected:
- Volkswagen
- Audi
- SEAT
- Škoda
For clear identification, however, the part number of the transmission control unit and the stored fault code are decisive.
How the DQ381 repair works
1. Order the repair
Select the matching DQ381 transmission control unit repair in the online shop.
2. Remove the control unit
Have the transmission control unit removed professionally from the vehicle or the mechatronic unit.
3. Send in the DQ381 control unit
Pack the control unit securely and with sufficient padding.
Enclose the complete order documents and an exact fault description in the parcel.
4. Diagnosis
After receipt, the DQ381 control unit is tested and the stated fault is analysed.
5. Feedback
After the diagnosis you receive feedback on the test result and the next steps.
6. Repair
After approval, the identified fault area is professionally repaired.
7. Function test and return shipping
Once the repair is complete, the control unit is tested and then sent back to you.
What information is needed?
For fast and clear processing, the following information should be available if possible:
- vehicle manufacturer
- vehicle model
- model year
- part number of the DQ381 control unit
- transmission code letters, if available
- stored fault codes
- exact description of the driving behaviour
A helpful fault description would be, for example:
“DQ381 transmission goes into limp mode. Fault P1736 – clutch 2 position sensor, electrical fault – is permanently stored.”
Requirements for a repair
The control unit sent in should be complete and in its original condition.
Units that may be problematic or excluded from repair include those that:
- have already been opened
- have been tampered with
- show improper repair attempts
- have severe mechanical damage
- have water or corrosion damage
- show fire damage
- are sent in incomplete
Whether a repair is possible can only be conclusively assessed after the unit has been received and tested.
Repair your DQ381 transmission control unit for typical DSG faults
For faults such as:
- DQ381 P1735
- DQ381 P1736
- DQ381 P175D
- DQ381 P175E
- DQ381 P176E
- DQ381 P176F
- DQ381 transmission control unit faulty
- DQ381 mechatronics faulty
- DSG clutch 1 fault
- DSG clutch 2 fault
- DQ381 transmission limp mode
- repair DSG control unit
- DQ381 mechatronics repair
a professional repair of the original DQ381 transmission control unit can be an economical alternative to replacement.
If you have questions about the repair or the compatibility of your part number, you can reach us by phone at:
05671 / 7664710
Have your DQ381 transmission control unit repaired now
Fixed price €320 incl. VAT, 12-month warranty, free shipping within Germany. Choose your brand: VW DQ381 repair · Audi DQ381 repair · Skoda DQ381 repair · SEAT DQ381 repair
All transmission control units at a glance: Transmission control unit repair