P0234critical severityPowertrain
Turbocharger/Supercharger A Overboost Condition
on 2016 Chevrolet Impala 3.6L V6 LFX · AWD
What this code means
The boost pressure has exceeded the maximum allowed value.
Symptoms
- Check Engine Light
- Excessive power then limp mode
- Whining turbo noise
- Possible engine damage
Common causes
- Wastegate stuck closed
- Boost control solenoid failure
- Boost pressure sensor fault
- Blocked wastegate actuator hose
Diagnostic steps
- Check wastegate operation
- Test boost control solenoid
- Monitor boost pressure
- Inspect vacuum lines to wastegate
Repair notes
Address immediately to prevent engine damage. Check wastegate and boost control.
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