P0176low severityPowertrain
Fuel Composition Sensor Circuit
on 2017 Chevrolet Impala 2.5L I4 Ecotec · AWD
What this code means
Malfunction in the fuel composition sensor circuit, used in flex-fuel vehicles to detect ethanol content.
Symptoms
- Check Engine Light
- Poor driveability on E85
- Incorrect fueling for fuel type
Common causes
- Faulty fuel composition sensor
- Wiring damage
- Sensor contamination
Diagnostic steps
- Test sensor output
- Inspect wiring
- Check for contamination
Repair notes
Replace fuel composition 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