P0170moderate severityPowertrain
Fuel Trim Bank 1
on 2016 Chevrolet Impala 3.6L V6 LFX · AWD
What this code means
The fuel trim values for Bank 1 are outside the acceptable range, indicating a persistent lean or rich condition.
Symptoms
- Check Engine Light
- Poor fuel economy
- Rough idle
- Hesitation
Common causes
- Vacuum leak
- Faulty O2 sensor
- Fuel pressure issue
- MAF sensor problem
- Exhaust leak
Diagnostic steps
- Check long-term fuel trim values
- Inspect for vacuum leaks
- Test fuel pressure
- Test MAF sensor
- Check for exhaust leaks
Repair notes
Diagnose and correct the underlying lean or rich condition.
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