U0066 Code: Meaning, Causes, and Symptoms | OBD2 Codes

U0066 – Vehicle Communication Bus E (+) Open

 

U0066 Possible Symptoms

 

Engine Light ON (or Service Engine Soon Warning Light)

 

U0066 Description

 

Vehicle Communication Bus E (+) Open is the generic description for the U0066 code, but the manufacturer may have a different description. Currently we have no further information abouth the U0066 OBDII code.