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Mercedes A-Class CVT Transmission ECU/TCU

A-Class Years: 1999 - 2013 - ABS pump and ECU repair

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Possible errors:

  1. P1815 / 0717 - The Speed Signal From component Y3 / 9b3 (primary speed sensor CVT continuously variable transmission) is not available
  2. P1826 / 0722 - Speed signal from component Y3 / 9b5 (output speed sensor CVT) not available
  3. P1939 / 0793 - Speed signal from component Y3 / 9b4 (secondary speed sensor CVT) not available
  4. P2198 / 0730 - The gear ratio in the transmission (CVT) is not permissible
  5. 0720 - Speed Gradient
  6. 0723 - The rpm signal from component Y3/9b5 CVT (output rpm sensor) is implausible
  7. 0739 - The rpm signal from component Y3/9b4 CVT - secondary rpm sensor is not available
  8. 0794 - Intermediate Input Shaft Speed Sensor Signal
  9. 1634 - Component Y3 / 9n1 (CVT) is defective or the power supply is faulty (under voltage)
  10. 0896 - impermissible adjustment of the step down ratio in the continuously variable automatic transmission (CVT)
  11. Transmission Visit workshop warning on dash
  12. Transmission can go straight into limp mode when selecting drive, slipping, loss of all drive and unable to select drive. These symptoms usually start off intermittently and become more frequent until total failure.
Other errors on request

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Transmission control unit repair

  • Your repair:

    1. Please contact us to discuss your repair.
    2. Please send your faulty part to us, well packed and secured. We will not take responsibility for bad packaging. If you wish your faulty part to be collected by our courier, please let us know.
    3. Make sure you have included your contact information: full name, address, contact number and e-mail for parcel tracking. You can use our repair order form.
    4. We will contact you after repair to let you know the progress and to collect payment. All repaired items will be send back only when full payment will be collected.
    5. All units delivered to us before 12 a clock will be repaired and shipped out same day.
    Please note: Your unit does not need to be programmed after repair!!!

    Repair form download

    £195.00 (excl. 20% Vat & shipping)
    For further questions: 01884 798090 or 07706 445537

    The offer is valid only for previously non repaired units.

CONTROLUNITS - electronics specialist
Safety related parts should be repaired and replaced only by a specialist.
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