DENSO 234-9022 Air Fuel Ratio Sensor

Fixed my problem in my Rav4

El producto era igual como en la descripción, llego un día antes y funciona muy bien.

Fits in a 2009 Toyota Rav4 with the 4-cylinder engine. Had worked fine for more than 2 years at the time of reviewing. A mechanic put in an off-brand sensor, and I continued getting the "check engine" light. The issue was only resolved with this specific sensor.

Time will tell how long this lasts, but I had a check engine light on my 2010 Lexus ES 350. Replaced this one, it was a pain, but it solved the issue once codes were cleared. Working good.

My car is a 2009 Toyota RAV4 with a 2.5L 4-cylinder engine. I believe this Air/Fuel Sensor, product # 234-9022, is a piece of Original Manufactured equipment because it fits perfectly and it looks the same as the one it replaced. Replacing this item was not difficult. It was pretty easy to screw the sensor off the gas pipe in front of the engine and I was able to do it above the car and quickly. But originally I didn’t intend to replace this sensor. I got an error code from my OBD2 Car Diagnostic Scanner that showed "Code: PO137, Define: O2 Sensor Circuit Low Voltage Bank 1 Sensor 2". I researched the issue on YouTube and other Toyota online forums. I found out that I should replace both Sensors 1 & 2 at the same time. So that was what I did. Sensor 1 was the Air/Fuel Sensor and Sensor 2 was the Oxygen Sensor, product #234-4622. I had a really hard time unscrewing the flawed Oxygen Sensor out of the gas pipe due to a lack of space to rotate the ratchet. In addition, the connector was too high to reach with both hands from under the car, where the sensor is located. You would need one hand to jam a flathead screwdriver into the connector to release the hook, and the other hand to pull the wire out of the connector. There was not enough space for two hands to do this from under the car! Luckily I had my brother helped me out. He stood next to the car and reached down with one hand to take a screwdriver to release the wire from the connector, and I pulled the wire from under the car. After that, installing the new sensor was a much easier step. As soon as I replaced both sensors, the error code went away. Also interesting to note: some online forums I visited have indicated that Oxygen sensors and Air/fuel sensors tend to last about 10 years. That's exactly how old my car is when the error code showed up. I learned about this repair routine from others on YouTube and other online forums, so I appreciate those people's videos and inputs. This DIY repair saved me at least $500 compared to having to leave the car at a repair shop or dealership. As such, I took the time to write this review in the hope that I'd paid my money-savings forward to someone who might be facing a similar problem.