What this code means

The ECM detected that the exhaust camshaft position actuator for Bank 2 is not in the expected park (locked) position during engine startup. The variable timing system is very sensitive to oil cleanliness and pressure.

Symptoms

• Check Engine Light
• Rough idle on startup
• Rattling noise from engine top
• Reduced power mode
• Delayed acceleration

Common causes

• Low engine oil level or low oil pressure
• Faulty CMP actuator solenoid
• Missing camshaft actuator solenoid screen
• Dirty or contaminated engine oil
• Debris in camshaft actuator system
• Worn timing chain or guides

Diagnostic steps

1. Check engine oil level and quality
2. Test oil pressure at startup
3. Inspect CMP actuator solenoid and screen for debris
4. Monitor camshaft position with scan tool
5. Check timing chain condition

Repair notes

Most commonly caused by low oil level/pressure or a faulty solenoid. Check oil first, then inspect solenoid screens. Replace solenoid if needed. Oil temperature, viscosity, and quality directly affect phaser responsiveness.

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