U0443
Invalid Data Received From Body Control Module B
U0443 is an OBD-II diagnostic trouble code meaning: Invalid Data Received From Body Control Module B. Common causes: problems with the can bus (open or short circuit), body control module b malfunction. Estimated repair cost: $56–278.
Symptoms
- Incorrect operation of comfort systems (lighting, power windows)
- Malfunction indicator light comes on
- Problems with central locking
- Intermittent operation of electrical equipment
- Errors in other vehicle systems
Causes
- Problems with the CAN bus (open or short circuit)
- Body control module B malfunction
- Poor contact in module connectors
- Wiring harness damage
- Software error in the module
How to Fix
- Check connections and connectors of the BCM-B module
- Conduct diagnostics of the CAN bus for breaks and short circuits
- Read error codes from BCM-B module
- If necessary, update the module software
- Replace the BCM-B module if a malfunction is detected
Related codes
Error U0443 by Vehicle Brand
FAQ
What does the U0443 code mean?
U0443 is an OBD-II diagnostic trouble code that indicates: Invalid Data Received From Body Control Module B
What causes a U0443 error code?
The most common causes of U0443 include: Problems with the CAN bus (open or short circuit); Body control module B malfunction; Poor contact in module connectors; Wiring harness damage.
How do I fix a U0443 diagnostic trouble code?
To fix U0443: Check connections and connectors of the BCM-B module. Conduct diagnostics of the CAN bus for breaks and short circuits. Read error codes from BCM-B module. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U0443?
Yes, but get it checked soon
How much does it cost to fix U0443?
The estimated repair cost for U0443 is $56–278. Actual cost depends on your vehicle, location, and labor rates.
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