Faulty shift solenoid 'A' with internal electrical failure or mechanical sticking; Damaged, chafed, or corroded wiring in the solenoid control circuit; Loose or contaminated electrical connector at the solenoid or transmission case; Transmission fluid degradation or contamination causing solenoid malfunction; Valve body issues, such as stuck valves or worn bores, affecting solenoid operation; Transmission control module software glitch or internal fault; Poor ground connection for the solenoid circuit

DTC codes / P09xx · Transmission / P0972

P0972Shift Solenoid 'A' Control Circuit Range/Performance

Q: What does code P0972 mean?

Shift Solenoid 'A' Control Circuit Range/Performance. P0972 indicates that the transmission control module has detected an abnormal electrical condition in the control circuit for shift solenoid 'A', which is responsible for managing hydraulic pressure during gear changes. The computer compares expected solenoid performance against actual feedback and sets this code when the circuit's resistance or response falls outside the manufacturer's specified range.

P0972 indicates that the transmission control module has detected an abnormal electrical condition in the control circuit for shift solenoid 'A', which is responsible for managing hydraulic pressure during gear changes. The computer compares expected solenoid performance against actual feedback and sets this code when the circuit's resistance or response falls outside the manufacturer's specified range.

SystemPowertrain

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyProfessional

AreaTransmission

Symptoms you may notice

Illumination of the check engine light or transmission warning light, often with no other noticeable symptoms
Harsh or delayed gear shifts, particularly when engaging drive or reverse
Transmission stuck in a single gear or failing to downshift during acceleration
Slipping sensation or intermittent loss of power delivery to the wheels
Reduced fuel economy due to improper shift timing
Transmission may enter limp mode, limiting vehicle speed and gear selection

Common causes, most likely first

Faulty shift solenoid 'A' with internal electrical failure or mechanical sticking
Damaged, chafed, or corroded wiring in the solenoid control circuit
Loose or contaminated electrical connector at the solenoid or transmission case
Transmission fluid degradation or contamination causing solenoid malfunction
Valve body issues, such as stuck valves or worn bores, affecting solenoid operation
Transmission control module software glitch or internal fault
Poor ground connection for the solenoid circuit

How to diagnose and fix it

Verify battery voltage and inspect the solenoid circuit fuse, as low voltage can trigger false codes
Perform a visual inspection of the solenoid wiring harness and connectors for damage, corrosion, or looseness
Check transmission fluid level and condition; service if fluid is dark or contaminated
Use a scan tool to command the solenoid on and off while monitoring circuit feedback to confirm electrical integrity
Measure resistance across the solenoid terminals and compare to manufacturer specifications
If resistance is out of spec, replace shift solenoid 'A' and inspect the valve body for debris or wear
Clear the code and perform a relearn or adaptation drive cycle to verify the repair

What the code does not always mean

A P0972 code can be set by a momentary voltage spike or low battery condition, so always check the charging system before condemning the solenoid.
The solenoid itself is often not the root cause; worn valve body bores or contaminated fluid can cause the solenoid to perform out of range even when electrically sound.
Some vehicles use a single solenoid for multiple functions, so a failure may affect several gears and mimic other transmission codes.
After replacing a solenoid, a transmission control module relearn procedure is often required to prevent repeat codes and ensure smooth shifting.
Intermittent wiring faults that only appear when the transmission is hot or vibrating are common and may not show up during a cold static test.

Can I keep driving with P0972?

You can usually drive the vehicle to a repair shop, but avoid aggressive acceleration or heavy loads because the transmission may shift unpredictably or enter limp mode. If the vehicle is stuck in a single gear or slipping severely, stop driving and arrange a tow to prevent further damage.

Tools that help

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Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.