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P codepowertrainMedium severity

P1712Trans Torque Reduction Request Signal Malfunction

The OBD2 code P1712 indicates a malfunction in the transmission torque reduction request signal, which typically means there is an issue with the communication or signal between the engine control module and the...

Definition

The OBD2 code P1712 indicates a malfunction in the transmission torque reduction request signal, which typically means there is an issue with the communication or signal between the engine control module and the transmission control module regarding torque management

Common causes

  • Faulty transmission control module (TCM)
  • Wiring issues or damaged connectors
  • Faulty torque converter clutch (TCC) solenoid
  • Malfunctioning engine control module (ECM)
  • Low transmission fluid level or quality
  • Faulty throttle position sensor (TPS)
  • Issues with the vehicle's electrical system
  • Software glitches or programming errors in the TCM or ECM

Common misdiagnoses

  • Transmission control module (TCM) failure
  • Faulty transmission fluid temperature sensor
  • Wiring issues or short circuits in the transmission harness
  • Malfunctioning throttle position sensor
  • Incorrectly calibrated or faulty engine control module (ECM)
  • Issues with the vehicle's battery or charging system
  • Problems with the torque converter
  • Faulty or misaligned shift linkage
  • Incorrectly diagnosed engine performance issues
  • Misinterpretation of other related codes

Troubleshooting steps

  1. 1.Check for Additional Codes

    Use an OBD-II scanner to check for any other trouble codes that may be present. Addressing related codes can help in diagnosing the root cause

  2. 2.Inspect Wiring and Connectors

    Examine the wiring and connectors related to the transmission and engine control systems. Look for signs of damage, corrosion, or loose connections that could affect communication

  3. 3.Check Transmission Fluid

    Ensure that the transmission fluid is at the correct level and in good condition. Low or contaminated fluid can cause transmission issues

  4. 4.Inspect the Transmission Control Module (TCM)

    Check the TCM for any signs of damage or malfunction. If the TCM is faulty, it may need to be reprogrammed or replaced

  5. 5.Examine the Engine Control Module (ECM)

    Similar to the TCM, check the ECM for any issues. Ensure that it is functioning correctly and that there are no software issues

  6. 6.Test the Torque Converter Clutch (TCC)

    Inspect the torque converter clutch operation. A malfunctioning TCC can lead to torque reduction requests being improperly signaled

  7. 7.Check for Mechanical Issues

    Inspect the transmission for any mechanical problems, such as slipping gears or internal damage, which could trigger torque reduction requests

  8. 8.Perform a Visual Inspection

    Look for any obvious signs of wear or damage in the transmission system, including mounts, seals, and other components

  9. 9.Clear Codes and Test Drive

    After performing any repairs or adjustments, clear the trouble codes and take the vehicle for a test drive to see if the code returns

  10. 10.Consult Technical Service Bulletins (TSBs)

    Check for any manufacturer-specific TSBs related to the P1712 code. There may be known issues or recalls that could apply to your vehicle.1

  11. 11.Professional Diagnosis

    If the issue persists after performing the above steps, consider seeking help from a professional mechanic or transmission specialist who can perform more advanced diagnostics. By following these steps, you can systematically identify and address the underlying issues causing the P1712 code