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P0021 Diagnostic Trouble Code Discussion for November 2011

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 Mazda 6 S 3.0L Poor Idle Quality, Stall, MIL Lamp on VIN: 1YVHP80D94
P0021: Camshaft Position Timing Over-Advanced (Left Hand). ... vehicle sets code P0021 during first drive cycle. Idle is rough and will stall at times. Removed oil control valve on front cylinder head and checked position and operation. The timing chain does not appear to be loose. The engine is clean internally. I am...
November 11, 2011