WOMS
P code powertrain Medium severity

P0707 Transmission Range Sensor A Circuit Low Input

The OBD2 code P0707 indicates that the Transmission Range Sensor A is sending a low voltage signal, which may suggest a malfunction in the sensor or its circuit, affecting the transmission's ability to determine the...

Definition

The OBD2 code P0707 indicates that the Transmission Range Sensor A is sending a low voltage signal, which may suggest a malfunction in the sensor or its circuit, affecting the transmission's ability to determine the correct gear position

Common causes

  • Faulty transmission range sensor
  • Wiring issues (shorts or open circuits)
  • Poor electrical connections
  • Corroded connectors
  • Faulty transmission control module (TCM)
  • Low transmission fluid level
  • Malfunctioning gear shift mechanism
  • Faulty engine control module (ECM)

Common misdiagnoses

  • Faulty Transmission Control Module (TCM)
  • Malfunctioning Transmission
  • Defective Engine Control Module (ECM)
  • Wiring Issues or Short Circuits
  • Bad Neutral Safety Switch
  • Incorrectly Installed or Damaged Transmission Range Sensor
  • Low Transmission Fluid Levels
  • Faulty Gear Selector Mechanism

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 other issues present

  2. 2. Inspect the Transmission Range Sensor

    Locate the transmission range sensor (also known as the neutral safety switch) and visually inspect it for any signs of damage, corrosion, or loose connections

  3. 3. Ensure that the sensor is properly mounted and aligned

  4. 4. Check Wiring and Connectors

    Inspect the wiring harness and connectors leading to the transmission range sensor for any signs of wear, fraying, or damage

  5. 5. Look for any loose or corroded connections that could affect the signal

  6. 6. Test the Sensor

    Use a multimeter to test the resistance and voltage output of the transmission range sensor according to the manufacturer's specifications

  7. 7. Check for continuity in the wiring to ensure there are no breaks

  8. 8. Inspect the Transmission Fluid Level

    Low transmission fluid levels can sometimes cause issues with the transmission range sensor. Check the fluid level and condition, and top off or change the fluid if necessary

  9. 9. Check for Mechanical Issues

    Ensure that the transmission is functioning properly and that there are no mechanical issues that could affect the sensor's operation

  10. 10. Check for any binding or misalignment in the transmission linkage

  11. 11. Clear the Codes and Test Drive

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

  12. 12. Take the vehicle for a test drive to see if the code reappears

  13. 13. Consult the Service Manual

    Refer to the vehicle's service manual for specific diagnostic procedures and specifications related to the transmission range sensor and circuit

  14. 14. Seek Professional Help

    If the issue persists after performing the above steps, it may be necessary to consult a professional mechanic or technician who has experience with transmission systems and OBD-II diagnostics. By following these troubleshooting steps, you should be able to identify and resolve the issue related to the P0707 code