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P0021 Diagnostic Trouble Code Discussion for December 2005

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

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Trouble Ticket Help Requests for DTC P0021
Help Request Posted
2004 Ford F-150 FX4 5.4L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1FTPX14544
P0021: Variable Cam Timing Over Advanced (Bank 2). This is a real stumpper! The truck cam in with these codes and running real bad. we found some info in Alldata about that contaminated oil or the wrong oil filter could cause the varaible valve timing to act up. It had been almost 10,000 miles since the last o...
December 19, 2005