LEMON Manuals
: Even more car manuals for everyone: 1960-2025
Home
>>
Dodge and Ram
>>
2008
>>
Magnum Base
>>
Repair and Diagnosis (Single Page)
>>
Accessories & Equipment
>>
Communication Devices
>>
Electronic Control Modules - Electrical Diagnostics
>>
Electronic Control Modules - Electrical Diagnostics
>>
DTC Troubleshooting
>>
U0100-Lost Communication With ECM/Pcm
>>
Possible Causes
April 5, 2026:
LEMON Manuals is launched!
Read the announcement.
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
ECM/PCM
ECM/PCM POWER AND GROUND
MODULE THAT SET THIS DTC