P2409low severityPowertrain
Evaporative Emission System Purge Control Valve Circuit/Open
on 2002 Audi A6 3.0L V6 · AWD
What this code means
The computer detects an open or fault in the EVAP purge control valve circuit. This can prevent proper venting of fuel vapors from the charcoal canister.
Symptoms
- Check engine light on
- Fuel odor near vehicle
- Failed emissions test
Common causes
- Faulty purge control valve
- Open or shorted circuit wiring
- Corroded valve connector
- PCM driver fault
Diagnostic steps
- Scan for EVAP related codes
- Check purge valve connector and wiring
- Test valve resistance and operation
- Replace purge valve if defective
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