U0042 Code: Meaning, Causes, and Symptoms | OBD2 Codes

U0042 – Vehicle Communication Bus B (-) Open

 

U0042 Possible Symptoms

 

Engine Light ON (or Service Engine Soon Warning Light)

 

U0042 Description

 

Vehicle Communication Bus B (-) Open is the generic description for the U0042 code, but the manufacturer may have a different description. Currently we have no further information abouth the U0042 OBDII code.