CAN COMMUNICATION SYSTEM DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION

DTC Code	Description
U0100	Lost Communication with ECM / PCM "A"
U0104	Lost Communication with Driving Support ECU
U0132	Lost Communication with Ride Level Control Module
U0139	Lost Communication with Suspension Control Module B
U0164	Lost Communication with A/C ECU
U0182	Lost Communication with AFS ECU
U0199	Lost Communication with "Door Control Module A"
U0200	Lost Communication with "Door Control Module B"
U0208	Lost Communication with "Seat Control Module A"
U0233	Lost Communication with Blind Spot Monitor Master Module
U0235	Lost Communication with Cruise Control Front Distance Range Sensor
U1002	Lost Communication with Gateway Module (Power Management1)
U1002	Lost Communication with Gateway Module (Power Management2)
U1002	Lost Communication with Gateway Module (MS Bus)
U1002	Lost Communication with Gateway Module (Sensor Bus)
U1100	Lost Communication with Seat Belt Control ECU
U1102	Lost Communication with Radar Sensor
U1104	Lost Communication with Driving Support ECU
U110B	Lost Communication with Parking Assist Control Module "B"
U1110	Lost Communication with Clearance Sonar Module
U1114	Lost Communication with Main Switch Module
U1115	Lost Communication with Tilt and Telescopic Module
U1119	Lost Communication with Object Recognition ECU (CAN)
U1121	Lost Communication with Driver Monitor ECU

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.

• Brakes feel soft, pull hard to one side, or make grinding noises.

• The engine overheats, stalls repeatedly, or misfires under load.

• You are missing required tools, torque specs, or safe lifting equipment.

• You are not confident in the next step or safety outcome.

Safety Warning

Can Communication System