P0161low severityPowertrain
O2 Sensor Heater Circuit Bank 2 Sensor 2
on 2017 Chevrolet Impala 2.5L I4 Ecotec · AWD
What this code means
Malfunction in the downstream O2 sensor heater on Bank 2.
Symptoms
- Check Engine Light
- Failed emissions
Common causes
- Faulty heater
- Blown fuse
- Wiring issue
Diagnostic steps
- Check fuse
- Test heater resistance
- Inspect wiring
Repair notes
Replace 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