U0443 — Invalid Data Received From Body Control Module B

What Does U0443 Mean?

U0443 is a diagnostic trouble code indicating: Invalid Data Received From Body Control Module B. 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
Find your vehicle above
Click your make and model for real owner reports and common causes specific to your vehicle.
2
Check for recalls
Go to nhtsa.gov/recalls and enter your VIN. Free repairs if covered.
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

U0438 Invalid Data Received From Trailer Brake Control Module U0439 Invalid Data Received From All Terrain Control Module U0440 Invalid Data Received From Pedestrian Alert Control Module U0441 Invalid Data Received From Emissions Critical Control Information U0442 Invalid Data Received From ECM/PCM B U0444 Invalid Data Received From Body Control Module C U0445 Invalid Data Received From Body Control Module D U0446 Invalid Data Received From Body Control Module E