故障现象一辆2003年款宝马530Li轿车(采用M54发动机和E60底盘),累计行驶里程为14万km,客户反映该车在等红灯时发动机易熄火,但熄火后可以重新起动。故障诊断用故障检测仪检测,调得的故障代码如下:29A8——DME(发动机电控单元)车载网络电源管理;2B1C——DME串行数据接口信号;2796——DME节气门调校值有错误;27A1——DME节气门启动试验;9CB3——LM(前照灯)前部高度传感器损坏;27C3—DME温度/油位传 Fault phenomenon A 2003 BMW 530Li sedan (with M54 engine and E60 chassis), the cumulative mileage of 140,000 km, the customer reflects the car at other red lights easily turn off the engine, but can be restarted after the flameout. Fault Diagnostic Fault Detector detects and adjusts the fault code as follows: 29A8 - DME (Engine Electronic Control Unit) Vehicle Network Power Management; 2B1C - DME serial data interface signal; 2796 - DME Throttle trim value Yes Error; 27A1 - DME Throttle Start-up Test; 9CB3 - LM (headlamp) front height sensor defective; 27C3-DME Temperature /