Review on Denso 234-9025 Air Fuel Ratio Sensor: Precision Measuring for Optimal Combustion by Scott Lavimodiere

This O2 sensor fixed the 'Check Engine' light in my car. This is an O2 sensor that fits my 1999 ULEV (Ultra Low Emissions Vehicle) or Honda Accord LX (4 Cyl) with California emissions. Revain incorrectly listed a cheaper O2 sensor as the correct match, which I bought and returned to Revain. This O2 sensor (234-9025) was easy to install on the front of the engine with a custom slotted bushing that I also ordered from Revain for about $8. This is technically called an "air-fuel ratio sensor", which is slightly different than an O2 sensor. Besides fixing the "Check Engine" light and inspecting the car, I have found that the car runs better after installing this sensor because I think the sensor is giving the correct air/fuel mixture feedback to the computer are.