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P0772 Shift Solenoid E Stuck On

The OBD2 code P0772 indicates that the Shift Solenoid E is stuck in the "on" position, which can affect the transmission's ability to shift gears properly

Definition

The OBD2 code P0772 indicates that the Shift Solenoid E is stuck in the "on" position, which can affect the transmission's ability to shift gears properly

Common causes

  • Faulty shift solenoid E
  • Wiring issues or damaged connectors
  • Low transmission fluid level
  • Contaminated transmission fluid
  • Faulty transmission control module (TCM)
  • Internal transmission problems
  • Poor electrical connections
  • Malfunctioning valve body

Common misdiagnoses

  • Transmission fluid issues
  • Faulty transmission control module (TCM)
  • Wiring or connector problems
  • Other shift solenoid failures
  • Valve body issues
  • Torque converter problems
  • Internal transmission damage

Troubleshooting steps

  1. 1. Check for Additional Codes

    Use an OBD-II scanner to check for any other trouble codes that may be present. This can provide more context and help identify related issues

  2. 2. Inspect Transmission Fluid

    Fluid Level: Check the transmission fluid level. Low fluid can cause shifting issues

  3. 3. Fluid Condition

    Inspect the fluid for contamination, burning smell, or dark color. If the fluid is dirty or burnt, consider a transmission fluid change

  4. 4. Examine Wiring and Connectors

    Inspect the wiring harness and connectors leading to the Shift Solenoid E for any signs of damage, corrosion, or loose connections. Repair or replace as necessary

  5. 5. Test the Shift Solenoid E

    Use a multimeter to test the resistance of the Shift Solenoid E. Compare the readings to the manufacturer’s specifications. If the solenoid is out of spec, it may need to be replaced

  6. 6. Check for Mechanical Issues

    Inspect the transmission for any mechanical issues that could affect the solenoid's operation, such as sticking valves or internal wear

  7. 7. Clear Codes and Test Drive

    After performing any repairs or adjustments, clear the trouble codes using the OBD-II scanner and take the vehicle for a test drive to see if the code returns

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

    If the problem persists, the TCM itself may be faulty. Check for updates or recalls related to the TCM for your vehicle model

  9. 9. Consult a Professional

    If you are unable to resolve the issue after these steps, it may be best to consult a professional mechanic or transmission specialist for further diagnosis and repair.Additional Considerations

  10. 10. Vehicle-Specific Information

    Always refer to the vehicle’s service manual for specific diagnostic procedures and specifications

  11. 11. Safety Precautions

    Ensure the vehicle is safely supported and that you take necessary precautions when working on the transmission. By following these steps, you can systematically diagnose and address the issue related to the P0772 code