Cold Start Camshaft Profile System Performance

Check these first

• Sludge or varnish stopping the camshaft phaser from moving when cold
• Low oil level or low oil pressure at cold start
• A weak camshaft phaser solenoid
• A clogged oil control valve feeding the phaser

What to do next

1. Check the oil level and condition first
2. Command the cold start camshaft profile with a scan tool and watch the timing
3. Inspect the phaser solenoid for a weak or stuck pintle
4. Check the oil control valve and its screen for debris
5. Replace the phaser or solenoid if it will not move cold
6. Clear the code and retest after a cold soak

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