Reverse Incorrect Ratio
The TCM detected a ratio mismatch in reverse — likely a stuck solenoid, slipping clutch, or worn band.
Affected components
- Automatic transmission
- Shift solenoid
Common causes
- High likelihood: Shift solenoid stuck
- Medium likelihood: Reverse clutch/band worn
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
- Reduced-power or limp mode may occur
Related codes
Sources
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.