Fault code index · medium
P0443
EVAP canister purge valve circuit malfunction
EVAP canister purge valve circuit malfunction
Documented for: 2.0L gasoline; 2.5L/3.0L gasoline · System(s): EMS EOBD, EMS OBD II · Factory MIL flag: 2 · Default action: ECM Default: –Canister purge inhibited –Adaptive fuel metering inhibited
Common causes
- EVAP Canister purge valve to ECM drive circuit: open circuit, short circuit, high resistance EVAP Canister purge valve power supply circuit: open circuit, short circuit EVAP Canister purge valve operating vacuum hose leak / restriction EVAP Canister purge valve failure
Quick checks
- Confirm freeze-frame and conditions when the code set
- Inspect connectors, grounds, and harness for the circuit named in the code
- Check intake boots, PCV, and vacuum lines for splits (very common on aged X-Types)