Mercedes A & B Class CVT Automatic Gearbox ECU TCU Repair Service 722.8


MotorTronics provides a prompt test and repair service for your electronic modules, The modules goes through various repair processes to ensure previously faulty parameters are fully repaired, only after this, we pass it and it’s ready for dispatch.

All that is left for you to do is

1. Click Buy it Now / Add to Cart
2. Fill in the Order Form / Packaging Slip provided after the payment page.
3. Send your Module with the Order Form
4. Await repair while we have your part(s)
5. Once received simply Plug it in and turn the key.
6. In some cases you will require diagnostics to adapt / clear codes.


This Repair service is for mercedes CVT Automatic transmission ECU / TCU

The Common fault with these are the internal RPM sensors fail causing no reading to be provided to the ECU which then causes the gearbox not to change gears and stuck on limp mode.

The typical error code that show up in the diagnostic are:

  • – P 0722 – The rpm signal from component Y3 / 9b5 (CVT (continuously variable automatic transmission) output rpm sensor) is not available.
  • – P 0730 – The gear ratio in continuously variable automatic transmission (CVT) is not permissible.
  • – P 0793 – The rpm signal from component Y3 / 9b4 (CVT (continuously variable automatic transmission) secondary rpm sensor) is not available.
  • – P 0896 – the continuous variable automatic transmission (CVT) adjust the gear ratio to an impermissible slow speed

These Gearboxes are fitted on many mercedes such as: A150, A160, A170, A180, A200, B150, B170, B180, B200

and have various part numbers such as: A 1695451032, A 1695451062, A 0034462410, A 1693700406, A 1693700506, A 1693700606, A 1693700706, A 1693700806, A 1693701006, A 1693701106