P1012moderate severityPowertrain
Exhaust Camshaft Position Actuator Park Position Bank 1
on 2005 Chevrolet Impala 3.4L V6 · FWD
What this code means
The ECM detected that the exhaust camshaft position actuator for Bank 1 is not in the expected park (locked) position at startup. This can cause rough running and increased emissions until the actuator reaches normal operation.
Symptoms
- Check Engine Light
- Rough idle on startup
- Engine rattle noise
- Reduced power
Common causes
- Low engine oil or low oil pressure
- Faulty exhaust CMP actuator solenoid
- Debris in camshaft actuator system
- Worn crankshaft thrust bearing
- Missing actuator solenoid screen
Diagnostic steps
- Check engine oil level and condition
- Test oil pressure
- Inspect exhaust CMP actuator solenoid
- Check for debris in actuator system
- Inspect timing chain
Repair notes
Check oil first. Replace exhaust CMP actuator solenoid if faulty. Ensure solenoid screen is in place.
Other Powertrain codes on this vehicle
P0001
Fuel Volume Regulator Control Circuit/Open
P0002
Fuel Volume Regulator Control Circuit Range/Performance
P0003
Fuel Volume Regulator Control Circuit Low
P0004
Fuel Volume Regulator Control Circuit High
P0010
Intake Camshaft Position Actuator Circuit/Open Bank 1
P0011
Intake Camshaft Position Timing Over-Advanced Bank 1
P0012
Intake Camshaft Position Timing Over-Retarded Bank 1
P0013
Exhaust Camshaft Position Actuator Circuit/Open Bank 1
P0014
Exhaust Camshaft Position Timing Over-Advanced Bank 1
P0015
Exhaust Camshaft Position Timing Over-Retarded Bank 1