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U0086: Vehicle Communication Bus F - Low

What Does U0086 Mean?

U0086 is a diagnostic trouble code indicating: Vehicle Communication Bus F - Low. 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

  1. 1
    Find your vehicle above

    Click your make and model for real owner reports and common causes specific to your vehicle.

  2. 2
    Check for recalls

    Go to nhtsa.gov/recalls and enter your VIN. Free repairs if covered.

  3. 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

U0081 Vehicle Communication Bus F Performance U0082 Vehicle Communication Bus F + Open U0083 Vehicle Communication Bus F + Low U0084 Vehicle Communication Bus F + High U0085 Vehicle Communication Bus F - Open U0087 Vehicle Communication Bus F - High U0088 Vehicle Communication Bus F - Shorted to Bus F + U0089 Vehicle Communication Bus G