Starter Disable Circuit/Open
The starter-disable circuit (used by transmission, immobiliser or anti-theft to block cranking unless safety conditions are met — e.g. clutch pedal pressed on manual, brake pedal on auto) is open. The starter cannot be disabled, weakening the safety chain.
Affected components
- Starter disable circuit
- Wiring harness
Common causes
- High likelihood: Open disable wire
- Low likelihood: Pin pushed back out of connector body
- Low likelihood: Cracked solder joint inside the module or sensor
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.