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Transmission Warning:
Fault codes P173500 / P173600 indicate DSG DQ381 TCU errors. Driving without repair can cause harsh shifting, limp mode, or total gearbox lock.
About DSG DQ381 TCU Faults
The DQ381 DSG transmission module controls gear selection and clutch management for VW, Audi, Skoda, and Seat. Fault codes P173500 / P173600 highlight internal TCU errors affecting clutch adaptation and gear changes.
Common Causes
- Faulty TCU (Transmission Control Unit) DQ381
- Clutch actuator or mechatronics issues
- Wiring or connector faults
- Software adaptation or communication errors
- Hydraulic block malfunction
Symptoms
- Limp mode engagement or gear restriction
- Harsh, delayed, or skipped shifts
- Warning lights or DSG fault messages
- Diagnostic codes P173500 / P173600
- Loss of smooth driveability
Our Repair Solutions
We specialise in diagnosing and repairing DSG DQ381 TCU faults across London. Services include TCU reconditioning, clutch/mechatronic inspection, wiring repair, and software adaptation — avoiding full gearbox replacement wherever possible.
Questions About DSG DQ381 TCU Faults?
Our specialists are ready to assist — don’t hesitate to get in touch.
📞 Call 07779 836677