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Possible Causes

WARNING: This page is about a different car, the 2007 Dodge Nitro. However, it is still accessible from the selected car via links, so may be relevant.
Possible Causes 
POWERTRAIN CONTROL MODULE POWERS AND GROUNDS
(D65) CAN C BUS (+) CIRCUIT OPEN
(D64) CAN C BUS (-) CIRCUIT OPEN
POWERTRAIN CONTROL MODULE