U0104 Code: Meaning, Causes, and Symptoms | OBD2 Codes

U0104 – Lost Communication With Distance Sensing and Cruise Control Module

 

U0104 Possible Symptoms

 

Engine Light ON (or Service Engine Soon Warning Light)

 

U0104 Possible Causes

 

Faulty Distance Sensing and Cruise Control (DSCC) Module,DSCC Module harness is open or shorted,DSCC Module circuit poor electrical connection

 

U0104 Description

 

Modules connected to the high speed General Motor Local Area Network (GMLAN) serial data circuits monitor for serial data communications during normal vehicle operation. Operating information and commands are exchanged among the modules. The modules have prerecorded information about what messages are needed to be exchanged on the serial data circuits, for each virtual network. The messages are supervised and also, some periodic messages are used by the receiver module as an availability indication of the transmitter module. The supervision time-out period is 250 ms. Each message contains the identification number of the transmitter module.