Engine Restart Performance
After a stop-start auto-stop the engine takes longer than calibrated to restart, or restart is missed. Possible causes are weak starter, low battery state of charge, weak crank position signal at low RPM, or a fuel rail that lost prime.
Affected components
- Starter motor
- Battery
- Crankshaft position sensor
Common causes
- High likelihood: Battery state of charge low
Possible symptoms
- Check engine light on
- Possible limp mode or no-start
- Multiple follow-up faults across modules
- Reset/relearn may be needed after repair
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.