WOMS
P code powertrain Medium severity

P0984 Shift Solenoid E Control Circuit Range/Performance

The OBD2 code P0984 indicates a problem with the shift solenoid E control circuit, specifically that the performance or range of the circuit is outside the expected parameters, which can affect transmission shifting

Definition

The OBD2 code P0984 indicates a problem with the shift solenoid E control circuit, specifically that the performance or range of the circuit is outside the expected parameters, which can affect transmission shifting

Common causes

  • Faulty shift solenoid E
  • Wiring issues (shorts, opens, or corrosion)
  • Poor electrical connections
  • Transmission control module (TCM) malfunction
  • Low transmission fluid level or dirty fluid
  • Faulty transmission valve body
  • Internal transmission issues
  • Faulty engine control module (ECM)

Common misdiagnoses

  • Faulty transmission control module (TCM)
  • Defective shift solenoid E
  • Wiring issues or short circuits
  • Low transmission fluid level
  • Transmission fluid contamination
  • Faulty transmission valve body
  • Incorrectly installed or damaged transmission components
  • Malfunctioning engine control module (ECM)

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 Shift Solenoid E. Look for signs of damage, corrosion, or loose connections. Repair or replace any damaged components

  3. 3. Test the Shift Solenoid E

    Use a multimeter to test the resistance of the solenoid. Compare the readings to the specifications provided in the vehicle's service manual. If the solenoid is out of spec, it may need to be replaced

  4. 4. Check Transmission Fluid Level and Condition

    Low or dirty transmission fluid can affect solenoid performance. Check the fluid level and condition; if it’s low, top it off with the correct type of fluid. If it’s dirty or burnt, consider a transmission fluid change

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

    The TCM controls the operation of the shift solenoids. Check for any signs of damage or malfunction. If necessary, test the TCM for proper operation

  6. 6. Check for Mechanical Issues

    Inspect the transmission for any mechanical issues that could affect solenoid operation, such as sticking valves or internal wear. This may require a more in-depth inspection by a professional

  7. 7. Perform a Transmission Fluid Pressure Test

    If applicable, perform a pressure test to ensure that the transmission is operating within the correct pressure range. Low pressure can affect solenoid performance

  8. 8. Clear Codes and Test Drive

    After performing repairs or adjustments, clear the trouble codes and take the vehicle for a test drive to see if the code returns. Monitor the transmission operation during the drive

  9. 9. Consult Technical Service Bulletins (TSBs)

    Check for any TSBs related to the specific make and model of the vehicle. Manufacturers may have issued guidance on common issues related to the P0984 code

  10. 10. Seek Professional Help

    If the issue persists after performing these steps, it may be necessary to consult a professional mechanic or transmission specialist for further diagnosis and repair. By following these steps, you can systematically identify and address the underlying cause of the P0984 code