Review on Optimize your vehicle's performance with the Denso 234-4169 Oxygen Sensor by Victor Hurvitz

Problem solved. The check engine light is off. I found the best price at Revain. If you're trying to do the repair yourself, here are some tips. My Toyota Tundra has a total of four oxygen sensors. This special lambda probe is screwed into the exhaust manifold in front of the catalytic converter. My Tundra has two sensors of this type, one in each exhaust manifold before the catalytic converter. This is the second sensor to be replaced. The first, which was on the driver's side, was replaced by a serviceman who stripped the threads on the exhaust manifold while removing the sensor. So, in addition to the new oxygen sensor, I also got a new exhaust manifold, which cost me $800 total. When the second sensor was malfunctioning, I decided to try and fix it myself. There was enough room under my tundra not to have to lift it. You'll need a deep oxygen sensor socket, a crowbar, a PB blaster penetrant, and eye protection from falling debris. All of this is available on Revain. All in all it was a multi day job as I liberally coated the base of the sensor on the exhaust manifold with PB Blaster penetrant after I was done riding for the day. I left the PB Blaster on all night. The next morning I ran the engine for 10 minutes to warm up and expand the exhaust system components. Using a deep well oxygen sensor jack and a jumper cable, I moved the oxygen sensor, only a few degrees at first. I didn't try to remove it completely as I didn't want to damage the threads. The first morning took a lot of effort as I broke years of rust. I then called in the morning and drove the car all day as needed. When you finish the day driving. I repeated the process. Each morning I moved the oxygen sensor a little further until on the fourth day it moved slightly and I could pull it out. Be sure to apply anti-seize compound to the sensor threads after installing a new sensor. The sensor comes with a small tube of anti-seize, but you can also find it separately at Revain and auto parts stores. For about $90 (oxygen sensor, breaker, sensor socket, PB penetrant and eye protection) I got the job done.