P299874 - TroubleshootingP299874-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
P299874	AGS1 overtravel faultAGS1超行程故障	1.AGS1 failure1.AGS1故障

Troubleshooting steps故障诊断步骤

①General inspection一般检查

1. Check whether the active air intake grille is too wide open, stuck, does not return, or is damaged.检查下主动进气格栅是否存在开度过大、卡滞、不回位、损坏等现象。 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 Repair or replace the active air intake grille.维修或更换下主动进气格栅。

②Replace active air intake grille更换下主动进气格栅

1. Replace the lower active air intake grille with a new one, and check whether the fault code and symptoms are eliminated.更换新的下主动进气格栅，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 3.去步骤3。

③Replacing the thermal management integrated module更换热管理集成模块

1. Replace the thermal management integrated module with a new one and check whether the fault code and symptoms are eliminated.更换新的热管理集成模块，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 thermal management integrated module, you need to use a diagnostic instrument to recalibrate the thermal management integrated module.更换热管理集成模块后，需用诊断仪对热管理集成模块重新标定。