Possible Causes

WARNING: This page is about a different car, the 2009 Dodge Caliber. However, it is still accessible from the selected car via links, so may be relevant.

Possible Causes
OTHER CAN B BUS DTCs SET IN TIPM
(D55) CAN B BUS (+) CIRCUIT OPEN
(D54) CAN B BUS (-) CIRCUIT OPEN
TOTALLY INTEGRATED POWER MODULE (TIPM)