Review on Denso 234 9024 Fuel Ratio Sensor by Mat Thompson

This worked great in my 1998 4 cylinder Toyota Camry LE with California Emission Control. Installation was pretty darn easy. We unscrew the cable from the old one and disconnect it; Apply thread lock, screw in and connect the cable for a new one. I also bought an OBD2 dongle from ieGeek for $17 here at Revain. Using it in conjunction with my iPhone gave me error codes that prompted me to replace the air/fuel ratio sensor. Between the OBD2 key and the Denso part, I probably saved $200-$300 by doing it myself instead of taking it to a mechanic. If you do it yourself, just make sure you're replacing the correct sensor. My OBD2 codes, which I unfortunately forgot, indicated that the faulty part was the sensor in front of the catalytic converter and behind the engine block. After the catalytic converter, there is another sensor that requires removing the driver's seat to access it. So make sure you are reading the right bank in the code. Also, I believe this part only applies to CA outliers. If you don't have a Camry with CA emissions, I think you can use an "oxygen sensor" instead of this "air/fuel ratio sensor".