P1136moderate severityPowertrain
Long Term Fuel Trim System Too Rich Bank 2
on 2003 Audi A6 2.7L Turbo V6 · AWD
What this code means
The ECU detected that the long-term fuel trim for Bank 2 has exceeded the maximum rich correction limit. The adaptive fuel system has exhausted its ability to lean out the mixture on Bank 2.
Symptoms
- Check Engine Light
- Rich exhaust from Bank 2
- Poor fuel economy
- Rough idle
- Black smoke
Common causes
- Leaking fuel injectors Bank 2
- O2 sensor Bank 2 faulty
- Fuel pressure too high
- PCV system fault
- Coolant temp sensor issue
Diagnostic steps
- Compare fuel trims Bank 1 vs Bank 2
- Test O2 sensor Bank 2
- Check fuel pressure
- Inspect PCV system
- Test coolant temperature sensor
Repair notes
Repair the cause of excess fuel delivery 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