P0443
Evaporative Emission System Purge Control Valve Circuit
Electrical fault in the EVAP purge solenoid circuit. The ECU detects an open, shorted, or out-of-range condition on the purge valve driver.
- Check engine light: Yes
- Emissions related: Yes
- Repair difficulty: easy
Symptoms
- Check engine light on
- Possible smell of fuel near tank or engine bay
- Failed emissions inspection
- Loose-cap warning may appear
Common causes
Ordered by how often each turns out to be the cause.
- Purge solenoid electrically failedCommon
- Wiring/connector faultPossible
Parts involved
- EVAP Purge Valve
- Purge Valve Wiring
P0443 is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.