WOMS
P code powertrain Medium severity

P1705 Not in P or N During KOEO / KOER

The OBD2 code P1705 indicates that the transmission control module detected that the vehicle is not in the Park (P) or Neutral (N) position during Key On Engine Off (KOEO) or Key On Engine Running (KOER) tests

Definition

The OBD2 code P1705 indicates that the transmission control module detected that the vehicle is not in the Park (P) or Neutral (N) position during Key On Engine Off (KOEO) or Key On Engine Running (KOER) tests

Common causes

  • Faulty transmission range sensor (TRS)
  • Malfunctioning neutral safety switch
  • Wiring issues or damaged connectors
  • Low transmission fluid level
  • Faulty transmission control module (TCM)
  • Incorrectly adjusted transmission linkage
  • Internal transmission problems

Common misdiagnoses

  • Faulty transmission range sensor
  • Wiring issues or shorts in the transmission harness
  • Malfunctioning engine control module (ECM)
  • Incorrectly adjusted or damaged shift linkage
  • Faulty neutral safety switch
  • Transmission fluid issues (low or contaminated fluid)
  • Problems with the vehicle's battery or charging system

Troubleshooting steps

  1. 1. Check Transmission Range Sensor (TRS)

    Inspect the TRS: Ensure that the transmission range sensor is functioning correctly. This sensor tells the TCM the current position of the transmission

  2. 2. Test the Sensor

    Use a multimeter to check the resistance and voltage output of the sensor. Compare the readings to the manufacturer's specifications

  3. 3. Inspect Wiring and Connectors

    Visual Inspection: Check for damaged, frayed, or corroded wiring and connectors related to the transmission range sensor and TCM

  4. 4. Connector Integrity

    Ensure that all connectors are securely attached and free of corrosion

  5. 5. Check for Mechanical Issues

    Transmission Linkage: Inspect the transmission linkage to ensure it is properly adjusted and not binding. A misaligned linkage can cause incorrect readings

  6. 6. Shifter Assembly

    Ensure that the shifter is functioning correctly and is not stuck or damaged

  7. 7. Scan for Additional Codes

    Check for Other Codes: Use an OBD-II scanner to check for any other related trouble codes that may provide additional context or indicate other issues

  8. 8. Inspect the TCM

    Check TCM Functionality: If the TRS and wiring are in good condition, the TCM itself may be faulty. Testing or replacing the TCM may be necessary

  9. 9. Software Updates

    Check if there are any software updates available for the TCM that may address known issues

  10. 10. Perform a KOEO/KOER Test

    Re-run Tests: After addressing any issues found, re-run the KOEO and KOER tests to see if the code reappears

  11. 11. Check Battery and Ground Connections

    Battery Voltage: Ensure the battery is fully charged and in good condition

  12. 12. Ground Connections

    Check all ground connections related to the TCM and transmission for corrosion or looseness

  13. 13. Professional Diagnosis

    Seek Professional Help: If the issue persists after performing these steps, consider consulting a professional mechanic or technician who has experience with transmission issues. By following these troubleshooting steps, you should be able to identify and resolve the underlying issue causing the P1705 code