Powertrain
generic / SAE
P0447
Evaporative Emission System Vent Control Circuit Open
The ECU detected an open circuit on the EVAP vent valve control. The vent valve is needed to seal the system for leak diagnostics; with the circuit open the leak test cannot complete.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number4 / 47
Possible causes
- Vent valve circuit open high
- Wiring or connector fault medium
- Pin pushed back out of connector body low
Symptoms
- Check engine light on
- Possible smell of fuel near tank or engine bay
- Failed emissions inspection
- Loose-cap warning may appear
Inspection / repair
- Difficulty: easy
- DIY: possible
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References
sae:J2012