LEMON Manuals
: Even more car manuals for everyone: 1960-2025
Home
>>
Jeep
>>
2010
>>
Commander Limited, RWD
>>
Repair and Diagnosis
>>
Engine Performance
>>
Engine Control Systems
>>
Front Control Module (FCM) - Electrical Diagnostics
>>
DTC Troubleshooting
>>
U0199-Lost Communication With Driver Door Module
>>
Possible Causes
April 5, 2026:
LEMON Manuals is launched!
Read the announcement.
Possible Causes
Possible Causes
CAN B BUS CIRCUITS OPEN OR SHORTED
DTCS RELATED TO BATTERY VOLTAGE, IGNITION, OR VIN MESSAGES
FCM NOT CONFIGURED CORRECTLY
DRIVER DOOR MODULE POWER AND GROUND
DRIVER DOOR MODULE
MODULE THAT SET THE DTC