- Engine Light ON (or Service Engine Soon Warning Light)
U0039 DescriptionVehicle Communication Bus B (+) Open is the generic description for the U0039 code, but the manufacturer may have a different description. Currently we have no further information abouth the U0039 OBDII code. Please post your question on our "Questions" section for more information: AutoCodes.com Questions.
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U0039 CommentsHelp us improve AutoCodes.com. Leave a comment below or tell us if the information above help you fix the code. What are the symptoms on your vehicle for the U0039 code? Have you replaced any parts?
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