P2420low severityPowertrain
EVAP Switching Valve Control Circuit High
on 2007 Audi S6 5.2L V10 · AWD
What this code means
High signal on the EVAP switching valve circuit.
Symptoms
- Check engine light
Common causes
- Open circuit
- Short to power
- Failed solenoid
Diagnostic steps
- Measure circuit voltage
- Check for opens
Repair notes
Replace valve or repair wiring.
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