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Home >> Mazda >> 1996 >> MX-5 Miata Base, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes >> Diagnostic Trouble Code Charts >> DTC P0420: (Catalyst System Efficiency Below Threshold)

DTC P0420: (Catalyst System Efficiency Below Threshold)

Fig 1: DTC P0420: (Catalyst System Efficiency Below Threshold)
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