P0263high severityPowertrain
Cylinder 1 Contribution/Balance
on 2017 Chevrolet Impala 2.5L I4 Ecotec · AWD
What this code means
Cylinder 1 is not contributing its expected share of power output.
Symptoms
- Check Engine Light
- Rough idle
- Misfire
- Vibration
Common causes
- Low compression cylinder 1
- Faulty injector
- Valve issue
- Head gasket leak
Diagnostic steps
- Run power balance test
- Check compression
- Test injector
- Inspect valves
Repair notes
Diagnose mechanical condition of cylinder 1.
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