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2013 AUDI A6

3.0L Supercharged V6•AWD•AUTOMATIC•gas•supercharged
6 active safety recalls on this vehicle — view recalls
Repairs0Labor991Torque6374Fluid15DTC1810Battery0Maintenance0Recalls6
P1177moderate severityPowertrain

Mixture Adaptation Bank 2 Limit Reached

on 2013 Audi A6 3.0L Supercharged V6 · AWD

What this code means

The ECU detected that the mixture adaptation for Bank 2 has reached its maximum or minimum correction limit. This is the Bank 2 equivalent of P1176.

Symptoms

  • Check Engine Light
  • Rough idle
  • Poor fuel economy
  • Hesitation under load

Common causes

  • Vacuum leak at Bank 2
  • MAF sensor fault
  • Fuel injector issue Bank 2
  • Fuel pressure regulator fault
  • Exhaust leak Bank 2

Diagnostic steps

  1. Reset adaptations and monitor
  2. Smoke test focusing on Bank 2
  3. Compare fuel trims between banks
  4. Test fuel pressure
  5. Check for exhaust leaks Bank 2

Repair notes

Repair the root cause of adaptation limit on Bank 2.

Other Powertrain codes on this vehicle

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