WOMS
P code powertrain Medium severity

P0949 ASM Adaptive Learning Not Done

The OBD2 code P0949 indicates that the Adaptive Shift Management (ASM) system has not completed its learning process, which is necessary for optimal transmission performance

Definition

The OBD2 code P0949 indicates that the Adaptive Shift Management (ASM) system has not completed its learning process, which is necessary for optimal transmission performance

Common causes

  • Low transmission fluid level
  • Contaminated transmission fluid
  • Faulty transmission control module (TCM)
  • Malfunctioning pressure control solenoid
  • Wiring issues or poor connections
  • Faulty transmission sensors
  • Software issues or outdated firmware
  • Mechanical transmission problems

Common misdiagnoses

  • Transmission fluid issues
  • Faulty transmission control module (TCM)
  • Wiring or connector problems
  • Faulty pressure sensor
  • Incorrect transmission fluid level
  • Mechanical transmission issues
  • Software or calibration errors

Troubleshooting steps

  1. 1. Check for Other Codes

    Use an OBD-II scanner to check for any other trouble codes that may be present. Addressing other codes may resolve the P0949 code

  2. 2. Inspect Transmission Fluid

    Check the transmission fluid level and condition. Low or dirty transmission fluid can affect transmission performance and adaptive learning. If the fluid is low, top it off with the correct type of fluid. If it is dirty, consider a transmission fluid change

  3. 3. Check for Leaks

    Inspect the transmission and surrounding areas for any signs of fluid leaks. Leaks can lead to low fluid levels and affect transmission operation

  4. 4. Inspect Wiring and Connectors

    Examine the wiring and connectors related to the transmission control module (TCM) and other related components for damage, corrosion, or loose connections

  5. 5. Reset the Transmission Control Module (TCM)

    Sometimes, resetting the TCM can help clear adaptive learning issues. This can be done by disconnecting the battery for a few minutes or using a scan tool to clear the code

  6. 6. Perform a Transmission Adaptation Reset

    Some vehicles require a specific procedure to reset the adaptive learning. Consult the vehicle’s service manual for the correct procedure

  7. 7. Check for Software Updates

    Verify if there are any software updates available for the TCM. Manufacturers sometimes release updates to improve performance and address known issues

  8. 8. Test Drive the Vehicle

    After performing the above steps, take the vehicle for a test drive to allow the TCM to relearn the adaptive values. Monitor the transmission performance and check if the code returns

  9. 9. Inspect the TCM

    If the code persists, there may be an issue with the TCM itself. Testing or replacing the TCM may be necessary

  10. 10. Consult a Professional

    If you are unable to resolve the issue after these steps, it may be best to consult a professional mechanic or a dealership for further diagnosis and repair. Always refer to the specific service manual for your vehicle for detailed procedures and specifications, as the steps may vary depending on the make and model