P073C — Stuck in Gear 7
The transmission is mechanically stuck in gear 7 and will not shift out of it. A shift solenoid or hydraulic valve on the gear-7 circuit has jammed, or a clutch/band has failed to release. Symptoms are no up- or downshifts, harsh behaviour, and often limp mode. Causes: a stuck or failed shift solenoid, a valve-body fault, a hydraulic pressure problem, or internal mechanical damage.
General code reference. Confirm the definition and diagnostic procedure for your vehicle's year, model and engine. A stored code alone does not identify a failed part.
Affected components
- Transmission
Possible causes to check
These are possible checks, not a ranked diagnosis. Follow the vehicle manufacturer's test procedure before replacing parts.
- Shift solenoid stuck
Possible symptoms
- Check engine or transmission warning light on
- Harsh, delayed, or missing shifts
- Possible limp mode (locked in one gear)
- Slipping or shuddering during gear changes
Diagnostic notes
- The malfunction indicator lamp may illuminate
Sources
Check each reference's vehicle and model-year scope. General background links do not establish which fault is most likely on your vehicle.
Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.