Exhaust Camshaft Position Actuator Park Position Bank 1
2002-2009 GMC Envoy 4.2L I6
Description
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.
Related Codes
Other Powertrain Codes
- P0001Fuel Volume Regulator Control Circuit/Open
- P0001Fuel Volume Regulator Control Circuit/Open
- P0002Fuel Volume Regulator Control Circuit Range/Performance
- P0002Fuel Volume Regulator Control Circuit Range/Performance
- P0003Fuel Volume Regulator Control Circuit Low
- P0003Fuel Volume Regulator Control Circuit Low
- P0004Fuel Volume Regulator Control Circuit High
- P0004Fuel Volume Regulator Control Circuit High
- P0010Intake Camshaft Position Actuator Circuit/Open Bank 1
- P0010Intake Camshaft Position Actuator Circuit/Open Bank 1
P1012 on Other Vehicles
Common Questions
What does code P1012 mean on a 2002-2009 GMC Envoy?
P1012 stands for "Exhaust Camshaft Position Actuator Park Position Bank 1". 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.
What are the symptoms of P1012 on a GMC Envoy?
Common symptoms of P1012 include: Check Engine Light, Rough idle on startup, Engine rattle noise, Reduced power.
What causes P1012 on a 2002-2009 GMC Envoy?
Common causes of P1012 include: 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.