P1735 / P1736 Clutch Position Sensor Fault 7 Speed DSG Audi, Seat, Skoda, VW Models

A very common issue we see in the workshop at Eco Torque, is the Clutch Position Sensor failing intermittently, with gearbox failure warnings on the dashboard.

This article will outline common faults and symptoms related to this issue, along with the essential replacement parts needed for repair. Specifically, we’ll examine faults that occur in the mechatronic circuit board, how they impact vehicle performance, and the real-world symptoms drivers may experience.

Mechatronic Circuit Board Failure

& Replacement Options

The mechatronics circuit board commonly fails internally and cannot be repaired, but fortunately, this is a well-documented issue with replacement parts readily available. With the right components, you can restore the transmission control unit (TCU) and get your vehicle back on the road.

 

Fault Codes & Symptoms

The issues caused by a failing mechatronic circuit board on the DSG gearbox can cause some very distinctive symptoms and fault codes.

Fault Codes Present/Logged:

• The transmission shudders when driving
• Or The message “Gearbox Malfunction” appears in the instrument cluster
• Or The message "Gearbox in emergency operation" appears in the instrument cluster
• Or The gearbox only works in emergency operation (Limp Home Mode). Driving is only possible in gears 1-3-5-7 or 2-4-6.

Workshop findings:

• One or more of the customer statements can be reproduced
• One or both of the following DTCs may be stored in the transmission control module (TCM), J217 (address word 0002): DTC P173500 (position sender for clutch 1, electric fault) with symptom code 10666.
• And/or DTC P173600 (position sender for clutch 2, electric fault) with symptom code 10668

Repairing the TCU

*It is essential this repair is completed by an experienced professional.*

The fault is related to one of the two pressure/position sensors on the TCU of the mechatronic unit. A trip to the main dealer and your only option is replacing the whole mechatronic unit which is extremely expensive.

Here at Eco torque we can rectify the fault by repairing the TCU by replacing the position sensors that are hardwired into the unit. Once replaced we refit the mechatronic unit and replace any external filters and transmission oil.

After the repair of the TCU we then carry out basic settings on the transmission to learn the new clutch pressure/position.

A more in depth step by step guide on replacing the board will be available to purchase from Eco Torque at a later date.

Need Workshop Repairs?

Contact our workshop today on 01462 835335 or email us at info@eco-torque.co.uk, if you need help with your gearbox.

Upgraded Pressure Sensors Now Available to Purchase!

The new and improved design we fit in the workshop can be found here.

Get In Touch

Have you experienced any problems with your car? We’d love to hear from you! Share your feedback by leaving a comment below. We look forward to learning about your thoughts and experiences.

For specific enquiries, please reach out to us directly using the contact details provided below.

For more information contact
Eco Torque today

Tel: 01462 835335
Email: info@eco-torque.co.uk
Eco Torque Ltd, Unit 1A Portland Industrial Estate, Hitchin Road, Arlesey, United Kingdom, SG15 6SG