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Home >> Mazda >> 1996 >> MX-6 Base, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes - 2.0L M/T >> Diagnostic Trouble Code Charts >> DTC P0420: Catalyst System Efficiency Below Threshold
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DTC P0420: Catalyst System Efficiency Below Threshold

Fig 1: DTC P0420 Catalyst System Efficiency Below Threshold
G96H10295Courtesy of MAZDA MOTORS CORP.