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2007 AUDI A8
4.2L V8•AWD•AUTOMATIC•gas
2 active safety recalls on this vehicle — view recalls
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Repairs0Labor548Torque2321Fluid8DTC839Battery1Maintenance0Recalls2
P1410low severityPowertrain

Tank Ventilation Valve Circuit Short to Positive

on 2007 Audi A8 4.2L V8 · AWD

What this code means

The ECU detected a short to positive voltage in the EVAP tank ventilation valve (purge valve) circuit. The purge valve cannot be properly controlled, affecting evaporative emission system operation.

Symptoms

  • Check Engine Light
  • Fuel odor near vehicle
  • Failed emissions test

Common causes

  • Wiring short to battery voltage
  • Faulty purge valve solenoid
  • Damaged connector
  • Wiring harness chafe near power source

Diagnostic steps

  1. Test purge valve solenoid resistance
  2. Inspect wiring for shorts to power
  3. Check connector condition
  4. Verify voltage at purge valve with key on engine off

Repair notes

Repair the wiring short or replace the purge valve.

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🔧 Database maintained under the daily editorial review of Chris Hackleman · Master Technician · 20+ years and Jeff Moore · Master Lexus & Toyota Mechanic · 20+ years. Spot an error? Use the Help link above — a human reads every report.
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