U0094: Vehicle Communication Bus H (+) Open
System
Network Communication
What Does U0094 Mean?
U0094 is a diagnostic trouble code indicating: Vehicle Communication Bus H (+) Open. This code relates to the network communication system. The vehicle's computer detected a condition outside normal operating parameters and stored this code.
What To Do Next
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1
Find your vehicle above
Click your make and model for real owner reports and common causes specific to your vehicle.
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2
Check for recalls
Go to nhtsa.gov/recalls and enter your VIN. Free repairs if covered.
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3
Get a professional diagnosis
A code alone doesn't identify the exact failed part. A diagnostic ($50–$150) pinpoints the root cause.
Related Codes
U0089
Vehicle Communication Bus G
U0090
Vehicle Communication Bus G (-) High
U0091
Vehicle Communication Bus G (-) shorted to Bus G (+)
U0092
Vehicle Communication Bus H
U0093
Vehicle Communication Bus H Performance
U0095
Vehicle Communication Bus H (+) Low
U0096
Vehicle Communication Bus H (+) High
U0097
Vehicle Communication Bus H (-) Open