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Mazda
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2009
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CX-9 FWD V6-3.7L
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Repair and Diagnosis
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A L L Diagnostic Trouble Codes ( DTC )
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Testing and Inspection
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P Code Charts
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P0420
P0420
DTC P0420, P0430 [MZI-3.7]
Detection Condition/Possible Cause:
Diagnostic procedure
Step 1-Step 7:
Step 8:
