Nissan Infiniti Suzuki Front Oxygen Sensor 234-9038/22693-1AA0A OEM Replacement

Front oxygen sensor for Nissan Infiniti Suzuki, OEM numbers 234-9038 and 22693-1AA0A, installed on the exhaust manifold or front exhaust pipe. It monitors oxygen content in the exhaust, provides feedback to the ECU for air–fuel ratio optimization, improving combustion efficiency and emissions control. Compatible with Nissan, Infiniti and some Suzuki models. Installation difficulty: medium. Labor time about 0.5–1 hour. If the check engine light is on, idle is unstable, fuel consumption increases, or acceleration is weak, the oxygen sensor is aging or failed and should be replaced promptly.