EVAP System Leak Detection Pump Heater Control Circuit Open
The leak detection pump heater - keeps the pump diaphragm warm in cold weather - has an open control circuit.
Affected components
- Evap leak detection pump heater
Common causes
- High likelihood: Open in heater or wiring
- Low likelihood: Pin pushed back out of connector body
- Low likelihood: Cracked solder joint inside the module or sensor
Possible symptoms
- Check engine light on
- Possible smell of fuel near tank or engine bay
- Failed emissions inspection
- Loose-cap warning may appear
Diagnostic notes
- The malfunction indicator lamp may illuminate
- This code can affect emissions
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.