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Home >> Jeep >> 2009 >> Commander Sport, 3.7 K, AWD >> Repair and Diagnosis >> Engine Performance >> Ignition System >> Front Control Module (FCM) - Electrical Diagnostics >> DTC Troubleshooting >> U0199-Lost Communication With Driver Door Module >> Possible Causes
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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
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