氧传感器 234-4835 22690F420A 精确空燃比控制 节油环保

Oxygen sensor on exhaust pipe 234-4835 (OEM 22690F420A, 226A07S001, 226A08U300) monitors exhaust oxygen content in real time and feeds back to ECU for precise air-fuel control, improving fuel economy and reducing emissions. Compatible with most standard models. Installation difficulty: medium; recommended labor 30-45 minutes. If idle is unstable, fuel consumption rises, acceleration is weak, or the engine check light is on, sensor aging or failure is likely; replace promptly.