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Home >> Dodge and Ram >> 2009 >> Journey R/T, AWD >> Repair and Diagnosis >> Transmission >> Automatic Trans >> (Transmission Control Module (TCM) - Electrical Diagnostics) >> DTC Troubleshooting >> U0100-Lost Communication With ECM/Pcm >> Possible Causes
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Possible Causes

Possible Causes 
CAN B OR CAN C BUS CIRCUITS OPEN OR SHORTED
DTCS RELATED TO BATTERY VOLTAGE, IGNITION, OR VIN MESSAGES
TIPM NOT CONFIGURED CORRECTLY
ENGINE CONTROL MODULE (ECM) or POWERTRAIN CONTROL MODULE (PCM)
TIPM POWER AND GROUND
MODULE THAT SET THIS DTC
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