故障现象2011款本田雅阁轿车,行驶里程约为4万km,因发动机故障灯异常点亮而进厂检修。故障诊断接车后试车验证故障,发动机运转并无明显异常,只是仪表上的发动机故障灯确实常亮。连接HDS,读取故障代码,得到故障代码“56-2 VTC系统故障”(图1)。记录并尝试清除故障代码,故障代码能够清除。然而路试一段时间后,该故障代码会再次出现,发动机故障灯也再次点亮。由此可见,故障确实存在。 Symptoms 2011 Honda Accord sedan, mileage of about 40,000 km, because the engine fault light abnormal lighting into the plant overhaul. Troubleshooting After the car to test the vehicle to verify the failure, the engine is running and no significant abnormalities, but the engine fault light on the instrument is indeed always on. Connect the HDS and read the error code to get the error code “56-2 VTC system error” (Figure 1). Record and try to clear the fault code, the fault code can be cleared. However, after a period of road test, the fault code will appear again, and the engine fault light will turn on again. This shows that the fault does exist.