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U0422 U0xxx · 网络通信（U） 低严重度
Invalid Data Received from Body Control Module
A module received implausible body data — typically lighting, door or vehicle-configuration information that does not match.
严重程度说明： 低——通常不影响行驶，下次保养时处理即可
你会注意到的故障现象
- Lighting or convenience functions odd
- Warning lamps
- Features missing
常见原因
按可能性从高到低排列——从最上面开始查。
- 1 Coding mismatch
- 2 Software version difference
- 3 Retrofitted options not coded
- 4 Corrupted data
如何排查
先做花钱最少、侵入最小的检查——大多数这类码不是零件问题。
- ✓ 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.
维修方案
- Correct the coding
- Update software
- Remove unsupported retrofits or code them properly
U0422 —— 常见问题
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.