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U0110 U0xxx · 网络通信（U） 高严重度
Lost Communication with Drive Motor / Inverter Control Module
On hybrids and EVs, the main ECU has lost contact with the inverter or motor controller. The vehicle will not drive or will not ready-up.
严重程度说明： 高——立即停车诊断，继续行驶有扩大损坏的风险
你会注意到的故障现象
- Ready lamp does not come on
- No drive
- HV system warnings
常见原因
按可能性从高到低排列——从最上面开始查。
- 1 Inverter supply or earth fault
- 2 CAN fault on the powertrain bus
- 3 Failed inverter module
- 4 HV interlock open
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。
- ✓ Follow high-voltage safety procedure — do not work on orange harnesses without the correct qualification.
- ✓ Check the HV interlock and service disconnect status.
- ✓ Verify inverter low-voltage supply and earth.
- ✓ Read the inverter's own codes if reachable.
维修方案
- Restore the HV interlock
- Repair the supply or bus wiring
- Replace the inverter (HV-qualified work only)
U0110 —— 常见问题
Can a normal workshop fix this? +
Diagnosis yes, but any work inside the HV system needs HV-qualified personnel and the correct PPE.
Is it dangerous? +
The HV system carries lethal voltage. Isolate and verify zero potential before touching anything orange.