丰田卡罗拉 雅力士 空燃比传感器 89467-12030 混合气调节

Toyota Corolla, Yaris air-fuel ratio sensor 89467-12030 designed for mixture adjustment, installed on the exhaust manifold or ahead of the exhaust pipe; monitors oxygen in exhaust in real time and sends data to ECU to precisely adjust injection, ensuring operation at the ideal air-fuel ratio. OEM 89467-12030; mainly for Corolla and Yaris series. Replacement difficulty medium; about 0.8-1.2 hours; protect threads and connector. If idle is unstable, fuel consumption increases, acceleration weak, or check engine light on, sensor aging or heavy carbon buildup is likely; replace to restore mixture control performance.