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U0010 U0xxx · 网络通信（U） 中严重度
Medium Speed CAN Communication Bus
The medium-speed CAN bus (typically body/comfort functions) is down. Drivability usually survives, but body functions drop out.
严重程度说明： 中——已影响行驶或排放，请本周内安排检修
你会注意到的故障现象
- Window, lock or lighting faults
- Multiple body modules unreachable
- Instrument cluster warnings
常见原因
按可能性从高到低排列——从最上面开始查。
- 1 Short or open in the body bus wiring
- 2 Failed body module dragging the line
- 3 Water ingress
- 4 Faulty gateway
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。
- ✓ Identify which functions share the bus — that tells you where to look.
- ✓ Measure bus voltages and resistance as with the high-speed bus.
- ✓ Isolate modules one at a time.
- ✓ Check the gateway module, which links body and powertrain buses.
维修方案
- Repair the bus wiring
- Replace the offending module
- Repair or replace the gateway
U0010 —— 常见问题
The engine is fine but nothing else works — why? +
Separate buses. The powertrain CAN still runs while the body bus is down.
What does the gateway do? +
It translates and routes messages between buses. A gateway fault looks like many unrelated module faults.