Shift Solenoid A Control Circuit Range/Performance
What does P0972 mean?
The P0972 code means the vehicle's onboard diagnostic system has detected: Shift Solenoid A Control Circuit Range/Performance. This is a moderate severity code.
Common Symptoms
- Check Engine Light illuminated
- Harsh or delayed 1-2 shift
- Transmission slipping in low gears
- Vehicle may enter limp mode
Probable Causes (Ranked by Likelihood)
- Shift solenoid A sticking or partially blocked Very High
- Contaminated or degraded transmission fluid High
- Electrical resistance out of spec in solenoid A circuit Moderate
- Valve body wear affecting solenoid A operation Low
Step-by-Step Diagnostic Procedure
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Check transmission fluid level and condition
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Monitor shift solenoid A duty cycle and response on a scan tool
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Test solenoid A resistance and compare to specifications
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Perform a transmission fluid and filter service
Frequently Asked Questions
What does shift solenoid A control?
Shift solenoid A typically controls the 1-2 shift or works with other solenoids to manage gear selection. The exact function varies by transmission model.
Can a fluid change fix P0972?
If the solenoid is sticking due to contaminated fluid, a fluid and filter change may resolve the issue. This is a recommended first step before replacing the solenoid.
Where is shift solenoid A located?
Shift solenoids are typically in the valve body inside the transmission. Accessing them requires removing the transmission pan and sometimes the valve body.