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故障现象:一辆2009款北京现代悦动轿车,在行驶中发动机故障指示灯突然点亮。行驶中没有异常现象。该车已行驶50000km。故障诊断:接到该车后查看仪表上的故障指示灯,确实点亮。连接北京现代原厂诊断仪,读取发动机系统的故障代码为:P0139,氧传感器电路搭铁,电路短路反应(1排/传感器2)。如图1所示,HO2S(B1/S2)在催化转化器的后侧,用于检查催化剂是否适当工作。催化转化器后的氧密度必须在规定范围内(无加速和减速
Symptoms: a 2009 Beijing Hyundai Yue moving sedan, the engine fault indicator light suddenly lit in driving. No abnormalities in driving. The car has been traveling 50000km. Troubleshooting: After receiving the car to view the fault indicator on the instrument, it really lit. Connect Beijing Hyundai original diagnostic instrument, read the engine system fault code: P0139, oxygen sensor circuit ground, the circuit short-circuit reaction (1 row / sensor 2). As shown in Figure 1, HO2S (B1 / S2) is on the rear side of the catalytic converter to check if the catalyst is working properly. After the catalytic converter oxygen density must be within the specified range (no acceleration and deceleration