U0422 U0xxx · Network (U) Low severity
Invalid Data Received from Body Control Module
A module received implausible body data — typically lighting, door or vehicle-configuration information that does not match.
Severity guidance: Low — usually no drivability impact, fix at the next service
Symptoms you will notice
- Lighting or convenience functions odd
- Warning lamps
- Features missing
Common causes
Ordered from most to least likely — start at the top.
- 1 Coding mismatch
- 2 Software version difference
- 3 Retrofitted options not coded
- 4 Corrupted data
How to diagnose it
Cheapest and least invasive first — most of these codes are not a parts problem.
- ✓ Check whether options were retrofitted without coding.
- ✓ Verify variant coding in the BCM and receiving module.
- ✓ Compare software versions.
- ✓ Clear codes and re-evaluate after a drive cycle.
Repair options
- Correct the coding
- Update software
- Remove unsupported retrofits or code them properly
U0422 — frequently asked questions
It started after fitting LED lights — why? +
Coding needs to reflect the fitted equipment, or the module sees an implausible load.
Is this urgent? +
Rarely. Convenience and lighting functions, not drivability.
Confirm the diagnosis before you buy parts
Send us the code, freeze-frame data and the vehicle — our engineers will tell you what to test first.