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Home >> Chrysler >> 2011 >> 300 C, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1664 (6.4L - DTCS P2504 To U1449 - 2500 Hd) >> DTC Troubleshooting >> U0117-Lost Communication With PTO Control Module >> Possible Causes

Possible Causes

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.
Possible Causes
CAN BUS CIRCUITS OPEN OR SHORTED
VEHICLE SYSTEM INTERFACE MODULE (VSIM)
POWERTRAIN CONTROL MODULE (PCM)

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. 

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