FixItFor.Us
P code powertrain High severity

P0960 Pressure Control Solenoid "A" Control Circuit/Open

The OBD2 code P0960 indicates a malfunction in the pressure control solenoid "A" circuit, specifically that there is an open circuit or a failure in the control signal to the solenoid, which can affect transmission...

Definition

The OBD2 code P0960 indicates a malfunction in the pressure control solenoid "A" circuit, specifically that there is an open circuit or a failure in the control signal to the solenoid, which can affect transmission fluid pressure regulation

Common causes

  • Faulty pressure control solenoid "A"
  • Open or shorted wiring in the control circuit
  • Poor electrical connections or corroded connectors
  • Failed transmission control module (TCM)
  • Low transmission fluid level
  • Contaminated transmission fluid
  • Faulty transmission valve body

Common misdiagnoses

  • Transmission fluid issues
  • Faulty transmission control module (TCM)
  • Wiring or connector problems
  • Faulty pressure control solenoid
  • Transmission valve body issues
  • Low transmission fluid level
  • Faulty engine control module (ECM)
  • Incorrectly diagnosed transmission failure

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 Wiring and Connectors

    Visually inspect the wiring and connectors associated with the Pressure Control Solenoid "A". Look for

  3. 3. Damaged, frayed, or corroded wires

  4. 4. Loose or disconnected connectors

  5. 5. Signs of moisture or dirt that could affect connections

  6. 6. Test the Pressure Control Solenoid

    If accessible, test the solenoid itself for proper operation. This may involve

  7. 7. Checking the resistance of the solenoid with a multimeter (refer to the vehicle's service manual for specifications)

  8. 8. Applying voltage to the solenoid to see if it activates

  9. 9. Check Power and Ground

    Use a multimeter to check for proper voltage and ground at the solenoid connector

  10. 10. With the ignition on (engine off), check for the specified voltage at the solenoid connector

  11. 11. Ensure that the ground circuit is intact and has a good connection

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

    The TCM controls the solenoid. Check for

  13. 13. Proper connections to the TCM

  14. 14. Any signs of damage or corrosion on the TCM connectors

  15. 15. If the TCM is functioning correctly (this may require specialized diagnostic equipment)

  16. 16. Check for Short Circuits

    Inspect the wiring for any short circuits that could cause the solenoid to malfunction. This includes checking for shorts to ground or to other circuits

  17. 17. Perform a Visual Inspection of the Transmission

    If applicable, inspect the transmission for any signs of leaks or damage that could affect solenoid operation

  18. 18. Clear Codes and Test Drive

    After performing 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

  19. 19. 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 access to advanced diagnostic tools and equipment. By following these steps, you should be able to identify and resolve the issue related to the P0960 code