What does code U0104 mean?

Q: What does code U0104 mean?

Lost Communication With Cruise Control Module. U0104 means the engine computer or another module on the controller area network (CAN) bus has stopped receiving messages from the cruise control module. The computer detects this as a communication timeout, not necessarily a failed cruise control unit, so the fault could be a wiring issue, a power or ground problem, or the module itself.

DTC codes / U01xx · Lost communication with a control module / U0104

U0104Lost Communication With Cruise Control Module

U0104 means the engine computer or another module on the controller area network (CAN) bus has stopped receiving messages from the cruise control module. The computer detects this as a communication timeout, not necessarily a failed cruise control unit, so the fault could be a wiring issue, a power or ground problem, or the module itself.

SystemNetwork

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyIntermediate

AreaLost communication with a control module

Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.