U0074 Code: Meaning, Causes, and Symptoms | OBD2 Codes

U0074 – Control Module Communication Bus ‘B’ Off

 

U0074 Possible Symptoms

 

Engine Light ON (or Service Engine Soon Warning Light)

 

U0074 Description

 

Control Module Communication Bus ‘B’ Off is the generic description for the U0074 code, but the manufacturer may have a different description. Currently we have no further information abouth the U0074 OBDII code.