P16E391 - TroubleshootingP16E391-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
P16E391	High voltage power off process times out高压下电过程超时	1. The process of disconnecting the main relay times out1.断开主继电器过程超时

Troubleshooting steps故障诊断步骤

①Power on check上电检查

Power on and off the vehicle again to see if the fault code and symptoms are eliminated.车辆重新上电并下电，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。