Solution for fault codes 17090 / P0706 / 001798 – Audi CVT Multitronic
Struggling with P0706 or VAG code 17090? This indicates an implausible or unreliable signal from the transmission position sensor (F125). This can result in gear change issues, warning lights and in some extreme cases, the car entering limp mode. If this is the case, we place our focus squarely on the 8-speed Multitronic CVT transmission control unit.
Which Audi models have error code P0706/17090?
These error codes are often seen in the following Audi models:
What are the possible causes of these Audi fault codes?
Often, the fault codes are caused by a worn or contaminated transmission position sensor, resulting in an implausible or incorrect signal being sent to the TCU. In addition, problems with the wiring, like corrosion or loose connections, can result in a similar fault.
Internal faults in the TCU itself can also cause the sensor values to be interpreted incorrectly. Finally, faults within the gear lever mechanism can also contribute to issues.
Diagnosis and inspection of the TCU
Before replacing or remanufacturing the TCU, there are a few steps you should take to determine the fault's cause:
- Check the wiring and connectors: wear, breakage or corrosion can cause a disrupted signal. Clean and repair the connections if necessary
- Read the sensor values with a diagnostic scan tool: check whether the F125 sensor gives logical values when shifting between gears
- Test the transmission position sensor and replace if necessary: If the sensor does not give correct values, replace it.
- Check the operation of the gear lever: A defect in the mechanical circuit can cause the sensor to register incorrect information
Solution for error code 17090, P0706 and 001798
If one of these error codes continues to appear after the above checks, there may be an internal error in the Multitronic / Hytronic VL381F. ACTRONICS offers a full remanufacture service during which wear-sensitive components are replaced. Remanufacturing is a sustainable and cost-effective alternative to replacements.
Returned to you in as-new specification with a two-year warranty and with no additional programming required, thanks to our unique techniques.
If you have any questions, please contact our product specialists.