Review on 🚀 Enhance Fuel Efficiency with Denso 234-4512 Oxygen Sensor by Jason Masango

Had code P0420 for a few years but when I cleared the code it went away for weeks before coming back. It didn't seem to cause any problems so we just went with it as I really didn't want to try to get to bank 1 sensor 2 oxygen sensors assuming they would be hard to get to and expensive to replace. Fast forward to this summer and P0420 is back with P0136 showing that the sensor itself has finally died. After finding the right sensor, I was pleasantly surprised at how inexpensive it is. I bought an O2 sensor socket and ended up not needing it as I could put a regular key on it. After a small oil leak the old sensor came out and I pulled the new one through the floor panel and behind the panel to the right of the driver's footwell. Total time was less than 1/2 hour and I think we've had better fuel economy since then. I'm glad it was a cheap and easy fix and wish I had done it years ago!