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Home >> Mazda >> 2004 >> B4000 Base, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 80 (Engine Controls [Self-Diagnostics 3.0L]) >> Diagnostic Tests >> DTC P0021: Left Side CMP Timing - Over-Advanced >> Detection Condition
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Detection Condition

WARNING: This page is about a different car, the 2003 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.

Actual valve timing is over-advanced by 20 degrees from target valve timing for 5 seconds. This is a Continuous Monitor (CM). MIL illuminates if PCM detects malfunction condition in first drive cycle. PENDING CODE is available if PCM detects malfunction condition. FREEZE FRAME DATA is available. DTC is stored in PCM memory.

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