P22E619 - TroubleshootingP22E619-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
P22E619	DCDC software low voltage side overcurrent fault 1DCDC软件低压侧过流故障1	1. Low voltage load short circuit1.低压负载短路
		2.DCDC internal short circuit2.DCDC内部短路
		2. The low-voltage current sensor is abnormal2.低压电流传感器不正常

Troubleshooting steps故障诊断步骤

①Power on check上电检查

1. Repower the vehicle, use the diagnostic tool to read and clear the fault codes, and check whether the fault codes and symptoms are eliminated.车辆重新上电，使用诊断仪读取并清除故障码，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。

②Check 12V battery voltage检查蓄电池电压

1. Power state is "OFF", disconnect the negative terminal of the 12V battery.电源状态“OFF”，断开蓄电池负极。 2. Use a digital multimeter to measure the voltage between the positive and negative terminals of the 12V battery.使用数字万用表测量蓄电池正、负极之间的电压。 Standard voltage value: about 12.5V标准电压值：约12.5V 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 Charge the 12V battery and replace it if necessary.对蓄电池进行充电，必要时更换蓄电池。

③Check electrical load检查电气负载

1. Check whether there are many electrical devices turned on in the vehicle.检查车辆开启的用电设备是否较多。 Are the test results normal?检查结果是否正常？ Yes是 Go to step 4.去步骤4。 No否 Turn off the electrical equipment; if the fault persists, go to step 4.关闭用电设备；若故障依然存在，去步骤4。

④Replacing 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。