P0986 code indicates a high voltage condition in the shift solenoid “E” control circuit.
P0986 Shift Solenoid “E” Control Circuit High
Code symptoms P0986.
– Erratic shifting or trouble shifting gears
– Delayed engagement when shifting
– Transmission slipping
– Check engine light illuminated
Causes of the code P0986.
1. Faulty shift solenoid “E”
2. Wiring issues or loose connections in the shift solenoid circuit
3. Short circuit in the shift solenoid circuit
4. Corroded or damaged shift solenoid connector
5. Internal transmission issues causing the shift solenoid to malfunction
Code Solutions P0986.
1. Check the shift solenoid “E” for any physical damage or signs of wear. Replace the solenoid if necessary.
2. Inspect the wiring and connectors connected to the shift solenoid “E” for any signs of damage, corrosion, or loose connections. Repair or replace the wiring and connectors as needed.
3. Test the shift solenoid “E” to ensure it is functioning properly. Use a multimeter to check for proper resistance and operation. Replace the solenoid if it fails the test.
4. Check the transmission control module (TCM) for any software updates or reprogramming that may be required to address the high control circuit fault. Update or reprogram the TCM using manufacturer-specific tools.
5. Perform a thorough diagnostic test on the entire transmission system to identify any other potential issues that may be causing the shift solenoid “E” control circuit high fault. Address any additional problems discovered during the diagnostic test.