P0443low severityPowertrain
EVAP System Purge Control Valve Circuit
on 1999 BMW 540iT E39 4.4L V8 · RWD
What this code means
Malfunction in the EVAP purge control valve electrical circuit.
Symptoms
- Check Engine Light
- EVAP system not purging
Common causes
- Faulty purge valve solenoid
- Wiring damage
- PCM driver failure
Diagnostic steps
- Test purge valve solenoid resistance
- Check wiring
- Command purge valve with scan tool
Repair notes
Replace purge valve or repair wiring.
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