长安新羚羊轿车发动机故障灯常亮

• 作 者: 蒋振荣
• 机 构: 温岭市职业中专,
• 出 处: 汽车维护与修理
• 发表日期: 2012年09期
• 关键词: 氧传感器 故障检测仪 发动机故障灯 手动挡 代码分析 氧传感器信号 累计行驶里程 一辆 信号电压 线路故障

故障现象一辆2011年出厂的长安新羚羊手动挡轿车,累计行驶里程约为4 500 km,出现发动机故障指示灯常亮的现象。故障诊断首先连接故障检测仪调取故障代码,分别为P0030——氧传感器控制线路开路;P0134——上游氧传感器信号线路故障(图1)。接故障检测仪读取数据流,发现1号氧传感器的信号电压一直在0.47 V无变化(图2),该数据异常。结合故障代码分析,认为可能是氧传感器加热线

Fault phenomenon A 2011 factory Changan new antelope manual transmission sedan, the cumulative mileage of about 4 500 km, the engine fault indicator light lit. Fault diagnosis First connect fault detector to retrieve fault code, respectively P0030 - oxygen sensor control line open; P0134 - upstream oxygen sensor signal line fault (Figure 1). The fault detector read the data stream and found that the signal voltage of the No. 1 oxygen sensor has been unchanged at 0.47 V (Figure 2), the data anomalies. Combination of fault code analysis, that may be oxygen sensor heating wire