The P0986: Shift Solenoid ‘E’ Control Circuit High refers to a situation where the shift solenoid ‘E’ control circuit is receiving higher than expected voltage. This can cause the solenoid to malfunction, affecting the transmission’s ability to shift properly.
P0986 – Quick Overview
| Code | Information |
|---|---|
| Meaning | P0986: Shift Solenoid ‘E’ Control Circuit High |
| Is it serious? | Yes, high voltage can damage the solenoid and cause improper shifting, affecting transmission performance. |
| Possible causes | – High voltage in the shift solenoid ‘E’ control circuit – Faulty shift solenoid ‘E’ – Wiring or connector issues |
| How to diagnose? | – Check the circuit for high voltage – Inspect wiring and connectors – Replace the shift solenoid ‘E’ if necessary |
P0986 Meaning
The P0986: Shift Solenoid ‘E’ Control Circuit High code indicates that the voltage in the shift solenoid ‘E’ control circuit is above the acceptable range. High voltage can cause the solenoid to malfunction, preventing proper transmission fluid regulation and leading to rough shifting, delayed engagement, or transmission slippage.
Step-by-step diagnostic guide
| Action | Description | Tools Needed |
|---|---|---|
| Check for Other Codes | Use an OBD-II scanner to check for additional fault codes that may provide more insight into the high voltage issue. | OBD-II Scanner |
| Test for High Voltage | Use a multimeter to check the voltage in the shift solenoid ‘E’ control circuit. Compare the voltage readings with manufacturer specifications to determine if they are above the expected range. | Multimeter |
| Inspect Wiring and Connectors | Inspect the wiring and connectors for signs of damage, corrosion, or loose connections that may be causing high voltage in the solenoid circuit. | Flashlight, Multimeter |
| Test the Solenoid | Test the shift solenoid ‘E’ for proper functionality. Replace the solenoid if it is malfunctioning or receiving excessive voltage. | Diagnostic Tool, Replacement Solenoid |
| Clear the Code and Test Drive | After completing repairs, clear the code using an OBD-II scanner and take the vehicle for a test drive to ensure the issue is resolved. | OBD-II Scanner, Vehicle Owner’s Manual |
| Recheck for Codes | Re-scan the system to ensure the P0986 code does not return after the test drive. | OBD-II Scanner |
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