P166C09 - TroubleshootingP166C09-故障诊断

Fault code description故障码说明

DTC故障码(DTC)	Fault code description故障码描述	Possible cause of failure可能故障原因
P166C09	Abnormal shunt temperature alarm分流器温度异常告警	1. Loose connection of copper bars, abnormal shunt, abnormal sampling harness, and abnormal BMS main board1.铜排虚接、分流器异常、采样线束异常、BMS主板异常

Troubleshooting steps故障诊断步骤

①Power on check上电检查

Power on the vehicle again and check whether the fault code and symptoms are eliminated.车辆重新上电，检查故障码及症状是否排除。

Are the test results normal?检查结果是否正常？

Yes是

Fault resolved.故障排除。

No否

Go to step 2.去步骤2。

②Replace the battery pack assembly更换电池组箱总成

Replace the battery pack assembly with a new one and check whether the fault code and symptoms are eliminated.更换新的电池组箱总成，检查故障码及症状是否排除。

Are the test results normal?检查结果是否正常？

Yes是

Fault resolved.故障排除。

No否

Look for causes from other symptoms.从其他症状查找原因。

Caution:注意：

♦

After replacing the battery pack assembly, you need to use a diagnostic tool to recalibrate the battery pack assembly.更换电池组箱总成后，需用诊断仪对电池组箱总成重新标定。