Cold Start B Camshaft Position Timing Over-Retarded Bank 1

Check these first

• A weak camshaft position sensor on bank 1
• A stuck camshaft position actuator
• Camshaft timing set late on bank 1
• Low battery voltage during start-up
• A worn timing chain on bank 1

What to do next

1. Monitor bank 1 cam timing during a cold start
2. Check battery voltage at start-up
3. Test the camshaft position actuator
4. Verify the timing chain marks
5. Replace the actuator if it sticks
6. Clear the code and retest

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