【太平洋汽车网】P0138故障码，意思是氧传感器电路高电压（第1排，传感器 2）(O2 Sensor Circuit High Voltage (Bank 1, Sensor 2))。 氧传感器的作用是测定发动机排气中的氧气含量，以修正喷油量，从而使发动机获得最佳空燃比。在OBD故障码中，你经常会看到第几排第几个 ...

P0134 – O2 Sensor Circuit No Activity Detected Sensor 1 Bank 1: The front heated oxygen sensor (or O2 sensor 1) is placed into the exhaust manifold. It detects the amount of oxygen in the exhaust gas ...