P200549 - TroubleshootingP200549-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
P200549	Electric oil pump pre-drive failure电动油泵预驱故障	1. The pre-drive chip has overvoltage, undervoltage and other faults.1.预驱芯片发生过压、欠压等故障

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 the oil pump controller power supply检查油泵控制器供电

1. Check whether there is a power supply failure to the oil pump controller.检查是否存在油泵控制器供电故障。 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 Troubleshoot related faults according to the fuel pump controller power supply fault code.根据油泵控制器供电故障码排除相关故障。

③Replace oil pump controller更换油泵控制器

1. Replace the oil pump controller with a new one and check whether the fault code and symptoms are eliminated.更换新的油泵控制器，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 oil pump controller, you need to use a diagnostic instrument to recalibrate the oil pump controller.更换油泵控制器后，需用诊断仪对油泵控制器重新标定。