Error code
OBD2 P0971
OBD2P0971
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.
What it means
Pressure Control Solenoid 'C' Control Circuit High.
Severity
moderateYou can still drive the vehicle, but it will not be comfortable.
Summary
P0971 indicates that there is an issue with the Pressure Control Solenoid 'C' control circuit being high in voltage, typically located within the transmission.
Symptoms
- Harsh shifting or banging into gear
- Missing gears or limited performance
Common Causes
- Wiring issues such as short circuits or poor connections
- Corrosion or water damage to connectors and harnesses
- Faulty pressure control solenoid valve 'C' itself
Diagnosis
- Inspect and repair any damaged or corroded wiring harnesses
- Check resistance across terminals using a DVOM to diagnose circuit issues
- Verify proper connection and seating of all connectors
Fixes
- Repairing or replacing faulty wiring, connectors, or the pressure control solenoid valve 'C'
FAQ
Can I drive with P0971?
Yes, but driving will be uncomfortable due to harsh shifting and potential gear issues.
What should I check first when diagnosing P0971?
Inspect the wiring harness for damage or corrosion before moving on to more complex tests.
Not affiliated with OBD2. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.
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