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P0021 Diagnostic Trouble Code Discussion for May 2010

Camshaft Position 'A' Timing Over-Advanced / System Performance (Bank 2)


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Trouble Ticket Help Requests for DTC P0021
Help Request Posted
2006 Ford F-150 XLT 5.4L Poor Idle Quality, MIL Lamp on VIN: 1FTVX12556
P0021: Variable Cam Timing Over Advanced (Bank 2). I am looking for some information on the cam phasers. What does a bad one look like and can you check without a complete tear down? I believe the left one is bad as the spring looks sprung. Any info would be helpful.
May 05, 2010
2006 Ford F-150 XLT 5.4L Poor Idle Quality, MIL Lamp on VIN: 1FTVX12556
P0021: Variable Cam Timing Over Advanced (Bank 2). I am looking for some information on the cam phasers. What does a bad one look like and can you check without a complete tear down? I believe the left one is bad as the spring looks sprung. Any info would be helpful.
May 05, 2010