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Home >> Chrysler >> 2011 >> 300 C, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1664 (6.4L - DTCS P2504 To U1449 - 2500 Hd) >> DTC Troubleshooting >> U012D-Lost Communication With Alternator Control Module >> Set Condition

Set Condition

WARNING: This page is about a different car, the 2017 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.

The Powertrain Control Module (PCM) has lost communication with the Smart Alternator over the LIN BUS. Two trip fault.