2010 Ford F-150 4.6L Engine P0020 Code: Diagnosis and Next Steps

The 8th character of the VIN is '8' — double-checking this detail. Are there any other diagnostic trouble codes present? Inspect the VCT1 solenoid: ensure the connector is securely attached and free from corrosion. Check for 12V at the solenoid during a KOEO (Key-On, Engine-Off) test. To troubleshoot further, unplug the solenoid and measure resistance — it should fall between 5 and 14 ohms. Note: Bank 1 corresponds to the passenger side of the engine.

Thanks for the detailed guidance — I'll verify these steps immediately.