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Home >> Chrysler >> 2011 >> 300 C, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 220 (6.7L - DTCS P21C4 To U1601 - 3500 Cab & Chassis) >> Diagnosis And Testing >> P2457-Exhaust Gas RECIRCULATION Cooling System Performance >> Theory Of Operation

Theory Of Operation

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

This test will fail if the EGR Temperature is greater than a calibrated threshold for a calibrated period of time. This monitor protects the system from a failed EGR Cooler.

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