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Home >> Chrysler >> 2011 >> 300 C, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 944 (Driver Door Module (DDM) (DMFL/R) - Electrical Diagnostics - 2500 Hd & 3500 Hd) >> Diagnosis And Testing >> U0164-00-Lost Communication With HVAC Control Module >> Possible Causes

Possible Causes

WARNING: This page is about a different car, the 2015 RAM 3500 HD and 2015 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.
Possible Causes
CAN BUS (+) CIRCUIT SHORTED TO VOLTAGE
CAN BUS (-) CIRCUIT SHORTED TO GROUND
DTCS RELATED TO BATTERY VOLTAGE, IGNITION, OR VIN MESSAGES
BODY CONTROL MODULE (BCM) NOT CONFIGURED CORRECTLY
HVAC POWER AND GROUND
HVAC CONTROL MODULE
MODULE THAT SET THE DTC