WOMS
P code powertrain High severity

P0927 Gear Shift Reverse Actuator Circuit High

The OBD2 code P0927 indicates that there is a high voltage signal detected in the gear shift reverse actuator circuit, which may suggest a malfunction in the actuator or its wiring

Definition

The OBD2 code P0927 indicates that there is a high voltage signal detected in the gear shift reverse actuator circuit, which may suggest a malfunction in the actuator or its wiring

Common causes

  • Faulty reverse actuator
  • Wiring issues (shorts or open circuits)
  • Poor connections or corroded terminals
  • Malfunctioning transmission control module (TCM)
  • Low transmission fluid levels
  • Faulty gear shift lever or assembly
  • Software issues or programming errors in the TCM

Common misdiagnoses

  • Transmission Control Module (TCM) failure
  • Faulty gear shift lever assembly
  • Wiring issues or short circuits
  • Defective reverse actuator motor
  • Low transmission fluid levels
  • Faulty transmission range sensor
  • Malfunctioning body control module (BCM)
  • Incorrectly calibrated or programmed TCM
  • Mechanical transmission issues
  • Faulty connectors or terminals in the circuit

Troubleshooting steps

  1. 1. Check the Vehicle's Manual

    Refer to the vehicle's service manual for specific information related to the P0927 code, including wiring diagrams and component locations

  2. 2. Visual Inspection

  3. 3. Inspect the wiring and connectors associated with the gear shift reverse actuator. Look for signs of damage, corrosion, or loose connections

  4. 4. Check for any frayed wires or broken connectors that could cause an open circuit

  5. 5. Check the Actuator

  6. 6. Test the reverse actuator itself to ensure it is functioning properly. If the actuator is faulty, it may need to be replaced

  7. 7. Measure Voltage and Ground

  8. 8. Use a multimeter to check the voltage at the actuator connector. Ensure that the voltage is within the manufacturer's specifications

  9. 9. Check for a good ground connection at the actuator. A poor ground can cause high voltage readings

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

  11. 11. The TCM may be malfunctioning or have a poor connection. Check for any stored codes in the TCM and clear them to see if the P0927 code returns

  12. 12. If the TCM is suspected to be faulty, it may need to be tested or replaced

  13. 13. Check for Other Codes

  14. 14. Look for any other related trouble codes that may provide additional context for the issue. Sometimes, multiple codes can point to a common problem

  15. 15. Perform a System Reset

  16. 16. After addressing any issues found, clear the trouble codes using an OBD-II scanner and take the vehicle for a test drive to see if the code returns

  17. 17. Consult a Professional

  18. 18. If the issue persists after performing the above steps, it may be necessary to consult a professional mechanic or technician who has experience with your specific vehicle make and model

  19. 19. Consider Environmental Factors

  20. 20. Sometimes, environmental factors such as moisture or extreme temperatures can affect electrical components. Ensure that the actuator and its connections are protected from such conditions. By following these troubleshooting steps, you should be able to identify the cause of the P0927 code and take appropriate action to resolve the issue