P1177moderate severityPowertrain
Mixture Adaptation Bank 2 Limit Reached
on 2017 Audi A6 3.0L Supercharged V6 · FWD
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
- Reset adaptations and monitor
- Smoke test focusing on Bank 2
- Compare fuel trims between banks
- Test fuel pressure
- Check for exhaust leaks Bank 2
Repair notes
Repair the root cause of adaptation limit on Bank 2.
Other Powertrain codes on this vehicle
P0001
Fuel Volume Regulator Control Circuit/Open
P0002
Fuel Volume Regulator Control Circuit Range/Performance
P0003
Fuel Volume Regulator Control Circuit Low
P0004
Fuel Volume Regulator Control Circuit High
P0010
Intake Camshaft Position Actuator Circuit/Open Bank 1
P0011
Intake Camshaft Position Timing Over-Advanced Bank 1
P0012
Intake Camshaft Position Timing Over-Retarded Bank 1
P0013
Exhaust Camshaft Position Actuator Circuit/Open Bank 1
P0014
Exhaust Camshaft Position Timing Over-Advanced Bank 1
P0015
Exhaust Camshaft Position Timing Over-Retarded Bank 1