P1163moderate severityPowertrain
HO2S Bank 1 Sensor 1 Slow Response
on 2009 Acura RL 3.5L V6 · AWD
What this code means
The upstream O2 sensor is switching too slowly between rich and lean.
Symptoms
- CEL
- Poor fuel economy
- Increased emissions
- Rough running
Common causes
- Aging sensor
- Contaminated sensor
- Exhaust leak
- Fuel quality issue
Diagnostic steps
- Monitor switching rate
- Check for exhaust leaks
- Test sensor heater
- Compare to specs
Repair notes
Replace O2 sensor.
Other Powertrain codes on this vehicle
P0001
Fuel Volume Regulator Control Circuit/Open
P0001
Fuel Volume Regulator Control Circuit/Open
P0002
Fuel Volume Regulator Control Circuit Range/Performance
P0002
Fuel Volume Regulator Control Circuit Range/Performance
P0003
Fuel Volume Regulator Control Circuit Low
P0003
Fuel Volume Regulator Control Circuit Low
P0004
Fuel Volume Regulator Control Circuit High
P0004
Fuel Volume Regulator Control Circuit High
P0010
Intake Camshaft Position Actuator Circuit/Open Bank 1
P0010
Intake Camshaft Position Actuator Circuit/Open Bank 1