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2015 AUDI A8
3.0L Supercharged V6•AWD•AUTOMATIC•gas•supercharged
5 active safety recalls on this vehicle — view recalls
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Repairs0Labor549Torque4554Fluid9DTC912Battery1Maintenance0Recalls5
P1450moderate severityPowertrain

Secondary Air Injection System Circuit Short

on 2015 Audi A8 3.0L Supercharged V6 · AWD

What this code means

The ECU detected an electrical short in the secondary air injection system circuit. The system is unable to operate correctly, preventing proper cold-start emission reduction.

Symptoms

  • Check Engine Light
  • Higher cold-start emissions
  • Failed emissions test
  • Unusual noise from air pump

Common causes

  • Shorted wiring in secondary air circuit
  • Faulty secondary air pump motor
  • Relay contact welded closed
  • Damaged connector
  • Water intrusion in air pump

Diagnostic steps

  1. Test secondary air pump motor resistance
  2. Check circuit for shorts
  3. Test relay operation
  4. Inspect connector and wiring
  5. Check for water entry in pump

Repair notes

Repair the electrical short or replace the secondary air pump.

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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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