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Home >> Chrysler >> 2011 >> 300 C, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 195 (3.7L/4.7L/5.7L - DTCS P0197 To P0503 - NGC - 1500 & 2500) >> Diagnosis And Testing >> P0420-Catalyst Efficiency (Bank 1) >> When Monitored:

When Monitored:

WARNING: This page is about a different car, the 2012 RAM Pickup. However, it is still accessible from the selected car via links, so may be relevant.

Engine Coolant Temperature (ECT) above 70° C (158° F), engine RPM between 1400 and 2300, vehicle speed between 64 and 96 kph (40 and 60 mph) and engine run time greater than three minutes.

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