EVAP Switching Valve Circuit Open
The ECU detects an open circuit on the EVAP switching valve drive line. The valve cannot be commanded between its purge and isolation positions.
Affected components
- Evap switching valve
- Evap wiring
Common causes
- High likelihood: Valve coil open
- Medium likelihood: Drive line open
- Low likelihood: Pin pushed back out of connector body
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
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.