P225298 - TroubleshootingP225298-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
P225298	DCDC over temperatureDCDC过温	1. The ambient temperature is too high and the coolant flow rate is insufficient.1.环境温度过高、冷却液流速不足

Troubleshooting steps故障诊断步骤

①Check ambient temperature检查环境温度

1. Check whether the ambient temperature is too high.检查环境温度是否过高。 2. Check for unusual heat sources near the vehicle.检查车辆附近是否存在异常热源。 Are the test results normal?检查结果是否正常？ Yes是 Go to step 2.去步骤2。 No否 Place the vehicle in a suitable environment and let it cool down; if the fault persists, go to step 2.将车辆置于合适的环境下，静置冷却；若故障仍然存在，去步骤2。

②Check Thermal Management Integrated Module检查热管理集成模块

1. Check whether the thermal management integrated module is working properly.检查热管理集成模块工作是否正常。 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 Repair the thermal management integrated module.检修热管理集成模块。

③Replacing the integrated electric drive assembly更换集成电力驱动总成

1. Replace the integrated electric drive assembly with a new one and check whether the fault code and symptoms are eliminated.更换新的集成电力驱动总成，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 integrated electric drive assembly, you need to use a diagnostic tool to recalibrate the integrated electric drive assembly.更换集成电力驱动总成后，需用诊断仪对集成电力驱动总成重新标定。