P0974
PowertrainTransmission Solenoidmoderate severityShift Solenoid A Control Circuit High
What P0974 Means
The transmission control module detected a high voltage condition in the shift solenoid A control circuit. An open or high resistance can stop the solenoid from operating correctly.
Symptoms
- Delayed or missing shifts
- Erratic transmission behavior
- Check engine light on
Common Causes
- Open circuit in solenoid wiring
- Faulty shift solenoid A
- Loose or corroded connector
- Failed transmission control module
Diagnostic Steps
- Scan for stored codes
- Check wiring for opens and shorts to power
- Test solenoid resistance
- Replace shift solenoid A if faulty
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