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Home >> Chrysler >> 2011 >> 300 C, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 434 (6.7L Diesel - DTCS P0420 To P1208 - 2500 Hd & 3500 Hd) >> Diagnosis And Testing >> P0606-Internal Control Processor >> Theory Of Operation

Theory Of Operation

WARNING: This page is about a different car, the 2013 RAM 3500 HD and 2013 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.

This fault code is triggered when the internal Powertrain Control Module (PCM) diagnostics detect a read or write error internal to the module. The PCM illuminates the MIL light immediately when the diagnostic runs and fails. The PCM will turn off the MIL light immediately after the diagnostic runs and passes. This fault code can only be caused by an internal PCM problem and may prevent the engine from starting.

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