Shift Timing Solenoid A Low
Shift timing solenoid A control circuit reads stuck low — short to ground or low-side driver stuck on.
Affected components
- Shift timing solenoid a
- Tcm
Common causes
- High likelihood: Control wire shorted to ground
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
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.