Clutch B Motor Underspeed
The clutch B actuator motor falls below the calibrated minimum speed for the commanded duty. High mechanical load or supply voltage low.
Affected components
- Clutch motor b
- Clutch actuator b
Common causes
- High likelihood: Mechanical load increased (binding)
- Medium likelihood: Supply voltage low under load
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.