In short: Faults P1735, P1736, P175D, P175E, P176E and P176F on a DQ500 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 DQ500 DSG 7-speed transmission control unit faulty and the fault memory shows faults such as P1735, P1736, P175D, P175E, P176E or P176F? Then there may be a defect inside the transmission control unit or the electronic mechatronics.
At Compramas you can have your existing DQ500 transmission control unit repaired. Your original control unit is tested, the identified fault area is repaired and the unit then undergoes a function test.
A repair can be an economical alternative to replacing the complete DSG mechatronic unit or buying a new transmission control unit.
What is the DQ500 transmission?
The DQ500 is a 7-speed dual-clutch transmission from the Volkswagen Group and, depending on vehicle and version, is used in various models from Volkswagen, Audi, SEAT and Škoda.
The transmission control unit handles, among other things, the electronic control of the clutches and individual gear changes. If internal signals are no longer processed correctly or position values are recorded incorrectly, transmission faults, warning messages or limp mode can occur.
Typical fault codes on the DQ500 transmission control unit
Common fault codes include:
- 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 related to the DQ500 mechatronics, clutch control or transmission control can also indicate a defect in the control unit.
If your fault code is not listed here, you can contact us in advance.
Fault P1735 – clutch 1 position sensor
Fault code P1735 indicates an electrical fault in the position sensor for clutch 1.
The transmission control unit needs precise position information to control the clutch correctly. If there is an internal electronic fault, these signals can no longer be processed reliably.
Possible symptoms are:
- DSG warning message
- transmission in limp mode
- restricted gear selection
- Shifting problems
- jerky gear changes
- vehicle may no longer pull away properly
Fault P1736 – clutch 2 position sensor
With P1736 – clutch 2 position sensor, electrical fault there is a comparable problem with the second clutch.
Here, too, the cause may lie within the DQ500 transmission control unit or its electronic signal processing.
The fault may occur permanently or at first sporadically and become more pronounced as the defect progresses.
P175D and P175E – clutch 1 faults
The fault codes
P175D – clutch 1 opens unintentionally
and
P175E – clutch 1 closes unintentionally
indicate problems with the activation or monitoring of the first clutch.
The control unit detects a clutch position or clutch state that does not match the requested position.
Possible effects are:
- unintended opening or closing of the clutch
- Shifting problems
- jerky driving behaviour
- DSG limp mode
- fault message in the instrument cluster
- restricted driveability
P176E and P176F – clutch 2 faults
For the second clutch, the faults
P176E – clutch 2 opens unintentionally
and
P176F – clutch 2 closes unintentionally
may occur, among others.
Here, too, a defect within the electronic transmission control may be responsible.
Since the two clutches are responsible for different gear groups, faults can affect driving and shifting behaviour differently depending on the clutch affected.
Typical symptoms of a faulty DQ500 transmission control unit
A defect in the DQ500 DSG control unit can show itself, for example, through the following symptoms:
- DSG warning light or transmission warning message
- transmission goes into limp mode
- vehicle no longer shifts properly
- individual gears are missing
- jerky or harsh gear changes
- clutch opens or closes unintentionally
- vehicle no longer pulls away correctly
- fault occurs sporadically
- fault reappears after clearing
- fault codes P1735 or P1736
- fault codes P175D, P175E, P176E or P176F
As similar symptoms can also have other causes, a professional diagnosis should be carried out before the repair.
Does the complete DQ500 mechatronic unit have to be replaced?
Not necessarily.
If the actual transmission control unit has an electronic defect, a targeted repair is often sufficient. This can avoid replacing a complete DSG mechatronic unit or an expensive new part.
With the repair, your existing original unit is retained.
This is particularly advantageous because the control unit remains assigned to the original vehicle. Depending on the specific scope of the repair, re-coding or adaptation can often be avoided.
Have your DQ500 transmission control unit repaired
At Compramas you send in your existing DQ500 transmission control unit for testing and repair.
After receipt the unit is first diagnosed. This checks whether the fault described is present and whether a repair is possible.
After approval, the control unit is repaired and then tested.
You receive your own repaired original unit back.
Possible DQ500 part numbers
This repair service may be suitable for various control units of the 0BH series, for example:
0BH927711C
0BH927711D
0BH927711E
0BH927711F
0BH927711G
0BH927711H
0BH927711J
0BH927711K
0BH927711L
0BH927711M
0BH927711N
0BH927711P
0BH927711Q
0BH927711R
0BH927711S
0BH927711T
0BH927711AA
0BH927711AB
0BH927711AC
0BH927711AD
0BH927711AE
0BH927711AF
0BH927711AG
0BH927711AJ
0BH927711AK
The part number on your existing control unit is decisive for identification.
If your part number is not listed, please contact us. Depending on the version, other variants may be repairable.
DQ500 in VW, Audi, SEAT and Škoda
The DQ500 and corresponding variants are used in various vehicles of the Volkswagen Group.
Depending on model year and vehicle equipment, vehicles from the following manufacturers, among others, may be affected:
- Volkswagen
- Audi
- SEAT
- Škoda
However, repairability does not depend solely on the vehicle model. Above all, the part number of the transmission control unit and the stored fault code must be taken into account.
How the DQ500 repair works
1. Order the repair
Order the matching DQ500 transmission control unit repair through our online shop.
2. Remove the control unit
Have the transmission control unit or the corresponding unit removed professionally.
3. Send in the unit
Pack the control unit securely and with sufficient padding.
Enclose the complete order documents and, if possible, an exact fault description in the parcel.
4. Diagnosis
After receipt we carry out a diagnosis and fault analysis of the DQ500 control unit sent in.
5. Feedback
After testing we inform you about the result and the further repair process.
6. Repair
After approval, the identified fault area is professionally repaired.
7. Function test and return shipping
After the repair the control unit is tested and then sent back to you.
What should you note before sending it in?
For the most accurate identification, we ideally need:
- vehicle manufacturer
- vehicle model
- model year
- part number of the transmission control unit
- transmission code letters, if available
- fault codes read out
- exact description of the symptoms
A suitable fault description would be, for example:
“DQ500 transmission goes into limp mode. Fault P1735 clutch 1 position sensor electrical fault is permanently stored.”
Requirements for a repair
The DQ500 control unit sent in must be complete and, if possible, in its original condition.
Units that may not be repairable, or only to a limited extent, include those that:
- have already been opened
- show previous improper repair attempts
- have severe mechanical damage
- show water or corrosion damage
- have fire damage
- are sent in incomplete
Whether the unit can ultimately be repaired can only be determined after the unit sent in has been tested.
Have your DQ500 transmission control unit repaired at Compramas
For faults such as:
- DQ500 P1735
- DQ500 P1736
- DQ500 P175D
- DQ500 P175E
- DQ500 P176E
- DQ500 P176F
- DSG transmission control unit faulty
- DQ500 mechatronics fault
- DQ500 clutch 1 fault
- DQ500 clutch 2 fault
- DSG transmission limp mode
- repair DQ500 control unit
a professional repair of the original DQ500 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 Compramas by phone at:
05671 / 7664710
Have your DQ500 transmission control unit repaired now
Fixed price €320 incl. VAT, 12-month warranty, free shipping within Germany. Choose your brand: VW DQ500 repair · Audi DQ500 repair · Skoda DQ500 repair · SEAT DQ500 repair
All transmission control units at a glance: Transmission control unit repair