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2017 AUDI A6

3.0L Supercharged V6AWDAUTOMATICgassupercharged
3 active safety recalls on this vehicle — view recalls
Repairs0Labor497Torque3715Fluid9DTC922Battery0Maintenance0Recalls3
P0412low severityPowertrain

Secondary Air Injection System Switching Valve A Circuit

on 2017 Audi A6 3.0L Supercharged V6 · AWD

What this code means

Malfunction in the AIR switching valve circuit.

Symptoms

  • Check Engine Light
  • AIR system not functioning

Common causes

  • Faulty switching valve
  • Wiring issue
  • Relay failure

Diagnostic steps

  1. Test valve solenoid
  2. Check wiring
  3. Test relay

Repair notes

Replace switching valve or repair wiring.

Other Powertrain codes on this vehicle

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