Intake Camshaft Position Actuator Park Position Bank 1
2004-2007 Buick Rainier 4.2L I6
Description
The ECM detected that the intake camshaft position actuator for Bank 1 is not in the expected park (locked) position during engine startup. The CMP actuator has a locking pin that prevents movement until sufficient oil pressure is available.
Symptoms
- Check Engine Light
- Rough idle on startup
- Engine rattle on cold start
- Reduced power
- Poor fuel economy
Common Causes
- Low engine oil level
- Low oil pressure
- Dirty or contaminated engine oil
- Faulty CMP actuator solenoid
- Missing CMP actuator solenoid screen
- Worn timing chain
Diagnostic Steps
- Check engine oil level and condition
- Test oil pressure
- Inspect CMP actuator solenoid and screen
- Monitor camshaft position with scan tool
- Check timing chain tension
Repair Notes
Start by checking oil level and quality. Clean or replace CMP actuator solenoid. If solenoid screen is missing, replace solenoid and change oil/filter.
Related Codes
Other Powertrain Codes
- P0001Fuel Volume Regulator Control Circuit/Open
- P0002Fuel Volume Regulator Control Circuit Range/Performance
- P0003Fuel Volume Regulator Control Circuit Low
- P0004Fuel Volume Regulator Control Circuit High
- P0010Intake Camshaft Position Actuator Circuit/Open Bank 1
- P0011Intake Camshaft Position Timing Over-Advanced Bank 1
- P0012Intake Camshaft Position Timing Over-Retarded Bank 1
- P0013Exhaust Camshaft Position Actuator Circuit/Open Bank 1
- P0014Exhaust Camshaft Position Timing Over-Advanced Bank 1
- P0015Exhaust Camshaft Position Timing Over-Retarded Bank 1
P1011 on Other Vehicles
Common Questions
What does code P1011 mean on a 2004-2007 Buick Rainier?
P1011 stands for "Intake Camshaft Position Actuator Park Position Bank 1". The ECM detected that the intake camshaft position actuator for Bank 1 is not in the expected park (locked) position during engine startup. The CMP actuator has a locking pin that prevents movement until sufficient oil pressure is available.
What are the symptoms of P1011 on a Buick Rainier?
Common symptoms of P1011 include: Check Engine Light, Rough idle on startup, Engine rattle on cold start, Reduced power, Poor fuel economy.
What causes P1011 on a 2004-2007 Buick Rainier?
Common causes of P1011 include: Low engine oil level, Low oil pressure, Dirty or contaminated engine oil, Faulty CMP actuator solenoid, Missing CMP actuator solenoid screen, Worn timing chain.