P1xxx
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Audi Code car problem P1426
Evaporative emission (EVAP) canister purge valve – open circuit
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Audi Code car problem P1425
Evaporative emission (EVAP) canister purge valve – short to ground
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Audi Code car problem P1424
Secondary air injection (AIR) system, Bank 1 – leak detected
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Audi Code car problem P1423
Secondary air injection (AIR) system, Bank 1 – insufficient flow detected
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Audi Code car problem P1422
Secondary air injection (AIR) valve/solenoid – short to positive
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Audi Code car problem P1421
Secondary air injection (AIR) valve/solenoid – short to ground
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Audi Code car problem P1420
Secondary air injection (AIR) valve/solenoid – circuit malfunction
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