What Does P0972 Mean?
The TCM has detected that Shift Solenoid A (SS-A) is not performing within its expected operating range. SS-A is a critical component that directs hydraulic fluid to engage specific gear ratios. A range/performance fault means the solenoid responds electrically but does not produce the correct hydraulic output, resulting in delayed, flared, or missed shifts. The driver will likely notice the transmission hunting between gears or failing to achieve certain gear ratios smoothly.
Common Causes
35%
Shift Solenoid A sticking or sluggish due to contamination, varnish, or wear
25%
Contaminated or degraded transmission fluid causing spool valve and solenoid issues
20%
Worn valve body passages or check balls preventing proper pressure routing
15%
Elevated circuit resistance reducing solenoid response speed
5%
TCM adaptive shift values significantly out of calibration
Diagnostic Steps
1
Check transmission fluid level and condition — contaminated fluid is the leading cause of shift solenoid performance issues.
2
Monitor shift solenoid A commanded state vs. actual gear ratio engagement using the scan tool. Note which specific shifts are affected and under what conditions (hot, cold, load).
3
Measure SS-A resistance at the transmission connector — should be within specification (typically 11-25 ohms for on/off solenoids, or 4-8 ohms for PWM types). Also check circuit resistance end-to-end.
4
Service the transmission fluid and filter. Reset TCM adaptive values and perform a thorough road test to evaluate if shift quality improves.
5
If the fluid service does not resolve the issue, valve body removal and inspection may be necessary to evaluate the solenoid and its bore for wear or contamination.
Estimated Repair Cost
$200 - $1,200
Parts + labor, varies by vehicle and location
The TCM has detected that Shift Solenoid A (SS-A) is not performing within its expected operating range. SS-A is a critical component that directs hydraulic fluid to engage specific gear ratios. A range/performance fault means the solenoid responds electrically but does not produce the correct hydra...
The most common cause of P0972 (Shift Solenoid "A" Control Circuit Range/Performance) is: Shift Solenoid A sticking or sluggish due to contamination, varnish, or wear
Typical repair costs for P0972 range from $200 to $1,200, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Delayed or missed shifts can be disconcerting and may cause momentary loss of acceleration. The vehicle remains drivable in most cases but shift quality degradation can worsen over time and lead to internal damage if not addressed.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P0972 to identify the root cause.
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Quick Info
Category
Powertrain
System
Automatic Transmission / Transaxle
Difficulty
Type
Generic (SAE)
Recommended Tools
OBD2 Scanner
A quality scan tool helps you read codes, view live data, and clear faults.
