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P0916 Gear Shift Position Circuit Low

The OBD2 code P0916 indicates a problem with the gear shift position circuit, specifically that the circuit is reading a low voltage or signal, which may affect the transmission's ability to determine the correct gear...

Definition

The OBD2 code P0916 indicates a problem with the gear shift position circuit, specifically that the circuit is reading a low voltage or signal, which may affect the transmission's ability to determine the correct gear position

Common causes

  • Faulty gear shift position sensor
  • Wiring issues (shorts, opens, or corrosion)
  • Poor electrical connections
  • Malfunctioning transmission control module (TCM)
  • Faulty transmission range sensor
  • Incorrectly adjusted gear shift linkage
  • Software issues in the TCM
  • Mechanical issues within the transmission

Common misdiagnoses

  • Transmission Control Module (TCM) failure
  • Faulty gear shift lever or assembly
  • Wiring issues or short circuits
  • Faulty transmission range sensor
  • Low transmission fluid levels
  • Malfunctioning transmission solenoids
  • Incorrectly calibrated or programmed TCM
  • Mechanical transmission issues
  • Faulty connectors or terminals
  • Issues with the vehicle's body control module (BCM)

Troubleshooting steps

  1. 1. Check for Additional Codes

    Use an OBD-II scanner to check for any other related trouble codes. This can provide more context and help identify if there are multiple issues

  2. 2. Inspect Wiring and Connectors

  3. 3. Visually inspect the wiring and connectors associated with the gear shift position sensor. Look for frayed wires, corrosion, or loose connections

  4. 4. Ensure that all connectors are securely attached and free of dirt or moisture

  5. 5. Test the Gear Shift Position Sensor

  6. 6. Use a multimeter to test the resistance and voltage output of the gear shift position sensor. Compare the readings to the specifications provided in the vehicle’s service manual

  7. 7. If the sensor is faulty, it may need to be replaced

  8. 8. Check for Mechanical Issues

  9. 9. Inspect the gear shift mechanism for any mechanical binding or misalignment that could affect the sensor's operation

  10. 10. Ensure that the gear shift lever is properly aligned and functioning smoothly

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

  12. 12. Check for any signs of damage or malfunction in the TCM. This may involve checking for software updates or reprogramming if necessary

  13. 13. Ensure that the TCM is receiving the correct signals from the gear shift position sensor

  14. 14. Look for Ground Issues

  15. 15. Check the ground connections related to the transmission and the gear shift position sensor. A poor ground can lead to low voltage readings

  16. 16. Clear Codes and Test Drive

  17. 17. After performing the above checks and repairs, clear the trouble codes using the OBD-II scanner

  18. 18. Take the vehicle for a test drive to see if the code reappears. Monitor the transmission operation during the drive

  19. 19. Consult a Professional

  20. 20. If the issue persists after performing these steps, it may be necessary to consult a professional mechanic or technician who has experience with transmission systems and can perform more advanced diagnostics. By following these steps, you can systematically identify and address the cause of the P0916 code. Always refer to the specific service manual for your vehicle for detailed procedures and specifications