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Mazda
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2004
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6 s, 4D Sedan, Automatic
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Repair and Diagnosis
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Engine Performance
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System
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On-Board Diagnostic [Engine Control System AJ)
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DTC P0021: CMP Timing Over-Advanced (LH)
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Notes
DTC P0021: CMP Timing Over-Advanced (LH): Notes
Fig 1: DTC P0021: Detection Condition & Possible Causes Chart
Courtesy of MAZDA MOTORS CORP.