Gear Shift Forward Actuator Circuit/Open
Open circuit at the forward shift actuator that engages forward gears on automated manual or dual-clutch transmissions.
Affected components
- Shift actuator forward
- Wiring harness
Common causes
- High likelihood: Actuator open winding
- Medium likelihood: Wiring break
- Low likelihood: Pin pushed back out of connector body
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
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.