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故障现象一辆2.5 L上海别克君威轿车,累计行驶6.5万km,出现发动机故障指示灯有时异常点亮的现象。故障诊断首先连接Tech 2对发动机电控系统进行检测,发现有故障代码P0132存在,其含义是加热型氧传感器电路电压过高(传感器1)。接着笔者向客户了解该车的使用情况,以及出现上述现象的具体情况。在沟通的过程中,得知该车在几天前发动机故障指示灯就亮了,当时就在一路边维修店维修过,该店的师傅经过了一番检查(具体检查了什么,车主不知道)后说,是节气门太脏,清洗了节气门,并清除了故障代码;第二天该指示灯再次点亮了,于是车主又把轿车开到该店进行检查,维修师傅反映还存在同一个故障代码,
Symptom A 2.5 L Shanghai Buick Regal sedan, total travel 65,000 km, the engine fault indicator light sometimes abnormal phenomenon. Fault diagnosis First connect Tech 2 to test the engine’s electronic control system and find fault code P0132, which means that the heated oxygen sensor circuit voltage is too high (sensor 1). Then the author to the customer to understand the use of the car, as well as the emergence of the specific circumstances of the phenomenon. In the process of communication, that the car a few days ago, the engine fault indicator light on, then repaired at a repair shop along the road, the shop’s master after some inspection (specifically check what the owner does not know ) Said that the throttle is dirty, cleaned the throttle, and cleared the fault code; the next day the light is lit again, so the owner and the car opened to the shop to check the maintenance master reflect the existence of the same A fault code