Error code
OBD2 P0973
OBD2P0973
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.
What it means
Shift Solenoid 'A' Control Circuit Low.
Severity
moderateCan drive but may experience shifting issues.
Summary
P0973 indicates a low control circuit issue with Shift Solenoid A in the transmission.
Symptoms
- Poor acceleration
- High-revving before shifting
- Harsh shifting
Common Causes
- Rodent damage to wiring harness
- Poorly routed or damaged wiring harness after repairs
Diagnosis
- Check the wiring harness for damage and proper connections.
- Perform a resistance check between TCM and Shift Solenoid A.
- Test the solenoid itself if circuit checks indicate an issue.
Fixes
- Repair or replace damaged wiring harness
- Replace faulty shift solenoid
FAQ
What causes P0973?
Common causes include rodent damage to wiring or poor repairs leading to damaged harnesses.
How do I diagnose P0973?
Use a DVOM and wiring diagram to check for resistance issues between TCM and Shift Solenoid A.
Not affiliated with OBD2. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.
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