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P0773 Shift Solenoid E Electrical

The OBD2 code P0773 indicates a malfunction in the electrical circuit of Shift Solenoid E, which is responsible for controlling gear shifts in the transmission

Definition

The OBD2 code P0773 indicates a malfunction in the electrical circuit of Shift Solenoid E, which is responsible for controlling gear shifts in the transmission

Common causes

  • Faulty shift solenoid E
  • Wiring issues (shorts, open circuits)
  • Poor electrical connections
  • Transmission control module (TCM) malfunction
  • Low transmission fluid levels
  • Contaminated transmission fluid
  • Faulty transmission valve body

Common misdiagnoses

  • Transmission fluid issues
  • Faulty transmission control module (TCM)
  • Shift solenoid A or B failure
  • Wiring or connector problems
  • Transmission 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 help identify if there are related issues that need to be addressed

  2. 2. Inspect Wiring and Connectors

  3. 3. Visually inspect the wiring and connectors leading to the Shift Solenoid E. Look for signs of damage, corrosion, or loose connections

  4. 4. Repair or replace any damaged wiring or connectors

  5. 5. Test the Shift Solenoid E

  6. 6. Disconnect the solenoid and use a multimeter to test its resistance. Compare the reading to the specifications in the vehicle’s service manual

  7. 7. If the resistance is out of specification, the solenoid may need to be replaced

  8. 8. Check the Transmission Fluid

  9. 9. Ensure that the transmission fluid is at the correct level and in good condition. Low or dirty fluid can cause shifting issues

  10. 10. If the fluid is dirty, consider changing it and replacing the filter

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

  12. 12. Check for any issues with the TCM, as it controls the operation of the shift solenoids. Look for signs of damage or corrosion

  13. 13. If necessary, test the TCM for proper operation

  14. 14. Perform a Voltage Test

  15. 15. With the ignition on (engine off), use a multimeter to check for voltage at the connector for the Shift Solenoid E

  16. 16. If there is no voltage, trace the wiring back to the TCM to find the source of the problem

  17. 17. Check for Ground Issues

  18. 18. Ensure that the solenoid has a good ground connection. A poor ground can cause electrical issues

  19. 19. Test the ground connection with a multimeter

  20. 20. Clear the Codes and Test Drive

  21. 21. After performing repairs, clear the trouble codes using the OBD-II scanner

  22. 22. Take the vehicle for a test drive to see if the code returns

  23. 23. Consult a Professional

  24. 24. If the issue persists after performing these steps, it may be necessary to consult a professional mechanic or transmission specialist for further diagnosis. By following these troubleshooting steps, you can identify and potentially resolve the issue related to the P0773 code. Always refer to the specific service manual for your vehicle for detailed procedures and specifications