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Home >> Chrysler >> 2005 >> 300 Base >> Repair and Diagnosis >> Engine Performance >> System >> DTCS P0330 To P0481 >> Diagnosis And Testing >> P0420-Catalyst 1/1 Efficiency >> Monitor Conditions

Monitor Conditions

  1. When Monitored: 

    After engine warm up to 70°C (158°F), 180 seconds of open throttle operation, at a speed greater than 18 mph and less than 55 mph, with the engine at 1200-1700 RPM and MAP vacuum between 15.0 and 21.0 inches of mercury (Hg).

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