P16E291 - TroubleshootingP16E291-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
P16E291	The high-voltage power-off process times out when waiting for the current to drop.高压下电过程等待电流下降超时	1. The external load did not stop working in time during the high-voltage power-off process.1.高压下电过程中外部负载没有及时停止工作

Troubleshooting steps故障诊断步骤

①Check high-voltage electrical appliances and integrated electric drive assembly检查高压电器和集成电力驱动总成

1. After the vehicle is powered off from high voltage, check whether any high-voltage electrical appliances continue to work.整车高压下电后，检查是否有高压电器继续工作。 2. Check whether the integrated electric drive assembly is functioning properly.检查集成电力驱动总成是否正常工作。 Are the test results normal?检查结果是否正常？ Yes是 Go to step 3.去步骤3。 No否 Wait for the high-voltage electrical appliance to stop working; if it keeps working, go to step 2.等待高压电器停止工作；若一直工作，去步骤2。

②Power on again and check重新上电检查

1. Power on and off again, and check whether the fault code and symptoms are eliminated.重新上电并下电，检查故障码及症状是否排除。 2. Check whether the high-voltage electrical appliances and integrated electric drive assembly continue to work.检查高压电器和集成电力驱动总成是否继续工作。 Are the test results normal?检查结果是否正常？ Yes是 Fault resolved.故障排除。 No否 Replace faulty high-voltage electrical components or integrated electric drive assembly.更换故障高压电器部件或集成电力驱动总成。

③Replace the battery pack assembly更换电池组箱总成

1. 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。