EVAP Leak Detection Pump Control Circuit High
Drive voltage on the leak-detection pump line is above the upper limit. Usually a short to supply or open ground.
Affected components
- Evap leak detection pump
- Evap pump wiring
Common causes
- High likelihood: Drive line shorted to supply
- Medium likelihood: Pump ground open
- Low likelihood: Connector pins corroded - high contact resistance
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
- A drive cycle may be required after repair
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.