What this code means

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

1. Check engine oil level and condition
2. Test oil pressure
3. Inspect CMP actuator solenoid and screen
4. Monitor camshaft position with scan tool
5. 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.

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