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Home >> Chrysler >> 2011 >> 300 C, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 76 (3.7L/4.7L/5.7L - DTCS P0503 To P0703 - NGC - 1500 & 2500) >> Diagnosis and Testing >> P050D-Cold Start Rough Idle >> Theory of Operation

Theory of Operation

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The objective of the Dynamic Crankshaft Fuel Control (DCFC) is to reduce the fuel as much as possible during a cold start. The Dynamic Crankshaft Fuel Control (DCFC) begins subtracting fuel from a high limit upon a cold start and keeps removing fuel in an attempt to get to a calibrated lean limit. DCFC stops removing fuel when rough idle is detected or the lean limit is reached.

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