U0031 Code: Meaning, Causes, and Symptoms | OBD2 Codes
U0031 – Vehicle Communication Bus A (+) Low
U0031 Possible Symptoms
Engine Light ON (or Service Engine Soon Warning Light)
Vehicle Communication Bus A (+) Low is the generic description for the U0031 code, but the manufacturer may have a different description. Currently we have no further information abouth the U0031 OBDII code.