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U0274: Lost Communication With Lighting Driver Control Module “B”

What Does U0274 Mean?

U0274 is a diagnostic trouble code indicating: Lost Communication With Lighting Driver Control Module “B”. This code relates to the manufacturer-specific network 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

U0269 Lost Communication With Image Processing Sensor E U0270 Lost Communication With Image Processing Sensor L U0271 Lost Communication With Seat Control Switch Module C U0272 Lost Communication With Seat Control Switch Module D U0273 Lost Communication With Lighting Driver Control Module “A” U0275 Lost Communication With Lighting Driver Control Module “C” U0276 Lost Communication With Lighting Driver Control Module “D” U0277 Lost Communication With Seat Control Module K