P0158moderate severityPowertrain
O2 Sensor Circuit High Voltage Bank 2 Sensor 2
on 2003 Audi S6 4.2L V8 · FWD
What this code means
High voltage from the downstream O2 sensor on Bank 2.
Symptoms
- Check Engine Light
- May indicate catalyst failure
Common causes
- Faulty sensor
- Catalyst failure
- Rich condition
Diagnostic steps
- Test voltage
- Check catalyst
Repair notes
Replace sensor or catalyst.
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