Shift Timing Solenoid A High
Shift timing solenoid A control circuit reads stuck high — short to battery voltage or open coil/return.
Affected components
- Shift timing solenoid a
- Tcm
Common causes
- High likelihood: Control wire shorted to battery voltage
- Medium likelihood: Open solenoid coil
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.