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Mazda
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1999
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Protege DX L4-1.6L DOHC
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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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P0451
P0451
P0451 (Step 1 Thru 9):
P0451 (Step 10 Thru 12):
