What it means
A control module has detected that the software in Body Control Module B is incompatible with its own software or configuration. The affected body functions may be limited; the specific effects depend on the vehicle.
How it works
A controller checks whether Body Control Module B's software and configuration are compatible with the other modules it communicates with. U0322 sets when the reported version or setup of this specific body control module does not match the checking controller's expectations, which can affect body functions managed through that module.
Common causes
Most likely first.
- Incorrect or incompatible software in Body Control Module B
- Module replacement without required programming or configuration
- Incorrect module part number
Symptoms
- Body functions controlled by the affected modules may not work correctly
- Related warning indicators may illuminate
- A diagnostic scan may show related communication or configuration codes
How to diagnose it
- Scan all modules and save event data, noting which controller logged U0322 and any body, configuration, or communication codes stored with it.
- Check whether Body Control Module B or a related controller was recently replaced, updated, or configured.
- Inspect the connectors and accessible wiring for Body Control Module B for poor seating, corrosion, moisture, or damage.
- Use a scan tool to read Body Control Module B's identity, software version, and configuration and compare them with the vehicle's required information.
- Review network and gateway fault records for communication or routing issues involving Body Control Module B.
- Restore compatible software and configuration using the manufacturer's procedure, then rescan and check the affected body functions.
Common fixes
- Secure or repair a loose or corroded Body Control Module B connection.
- Program or configure a replacement Body Control Module B for the vehicle.
- Replace an incorrectly specified module with the correct compatible unit.
- Correct gateway routing or configuration if it is disrupting Body Control Module B communication.
Can I keep driving?
Driving is generally possible if only nonessential body functions are affected, but do not continue if lighting, door latching, visibility, or another safety-related function is unreliable. Check that required lights work before driving and arrange diagnosis.
A code shows where the control module detected a fault, not always which part failed. Check the causes in order and confirm with a test before replacing parts. Have several codes? Check them together
This is a generic code: it means the same on every make. The car’s maker may add more detail in its own service information.