Denso 234-4215 Oxygen Sensor

It arrived very fast and looked like it was well built. The Denso box was all crushed and looked used, but the O2 sensor was brand new for sure. Took it out of box and the O2 sensor didn't have any model number or Denso written on it. So hopefully I got the real deal and not some copy knock offs. Over all the plugs, wires, and the sensor looked well made so I decided to go ahead with my O2 install.Removed the old 02 and installed the new O2 and walla "check engine light" went away. Here's my recommendation. Have your mechanic check the check engine light before you start anything. Find the code and go from there. I have 4 sensor so it was very important to find out what sensor is out before ordering and working on it.Got the code, found which sensor is out, ordered it, and installed a new one. Man, I saved $500 - parts by doing it my self on my Lexus. The dealer was going to charge me $500 for 2hr job I did myself. Dealers, they are !@#$%& crazy charging people that much. It cost me $50 part and 2 hours of my time. Easy peasy...Lexus dealer go @#$% your self!

After replacing the upstream Bank 1 sensor on my 2003 Lexus RX300 the check engine light reappeared. Previously I had my mechanic replace the plugs and test the coils. He was adamant that replacing the upstream sensor Denso 234-9009 would solve the problem. The only drawback, he wanted $300 to do it. I bought the sensor myself and the installation was easy (see Youtube for detailed instructions. Still I had the check engine light...grrrrr!Had the car checked with another mechanic and he said it showed the downstream sensor was bad, so back to Amazon I went. The weird thing about replacing this sensor is that the plug is inside the vehicle, under the drivers seat. I thought this would be a major project, but found that removing the four bolts holding the seat was a snap. Then I just laid the seat back on the back seat and it didn't even require me to remove the seat's wiring harness. The clip on the sensor is a bit snug to remove but if you pull the carpet up a little it was not too bad. There is a strap that holds the cable against the bottom of the vehicle. If you insert a small flat-blade screwdriver into the side where the strap comes through it will release the wrap and then you can reuse the strap.All-in-all, the job took slightly less than an hour; and did not require any special tools, or to jack the vehicle up. Spray a little Windex on the rubber grommet and it will go in easily. Then put some electrical tape around the cable where is comes through the grommet to seal it, and you're done. Remove and reinsert the EFI fuse to reset the check engine light.Not only did I save a pile of dough using Amazon, they made it easy to make sure the part was the correct one for my RX300. One word of caution. You will find other manufacturer's parts for less money. Denso is the OEM for Toyota products and the only problems I ever had was when I tried to use parts that weren't Denso. It may cost a few extra bucks, but they are worth the money!

Great, OEM quality for your Toyota. Fits perfectly and isn’t made in China.

Worked great.

This sensor was used as a replacement for the sensor in front of the catalytic converter on a 2002 V6 highlander. Installation was fairly easy though I had to remove the 4 driver front seat bolts and tip the seat forward to access the connector which is inside the cabin under the carpet under the seat. The 4 bolts easily came out with a socket wrench. The seat can be tipped forward without disconnecting any of the wires that go to the seat for the power seat controls. The connector in the cabin is physically connected to the stamped ridge in the floor under the carpet near the front of the seat. The connector is on the vertical surface and faces the back of the cabin and can be accessed by cutting the carpet starting at an existing slit in the carper more towards the middle of the seat. I initially tried not cutting the carpet which proved frustrating. It didn't really matter since when the seat is put back in place the cuts are not visible.I used a heavy scissors to cut the carpet. The connector has a single push type clip that keeps the 2 ends of the connector engaged and is easily accessible once the carpet is cut.. The rubber grommet perfectly fit the hole in the bottom of the car. As additional protection I caulked where the protective sleeve on the wire goes through the grommet as well as at the other end where the sleeve slides up against the sensor even though the rubber is zip tied around the wire at the grommet. If I knew then what I know now the job would have taken less than an hour. Note that I was quoted $240 by a shop to have them replace the sensor. My check engine and VSC lights have not come on since I replaced the sensor. Hope this helps

My engine light was on and I was getting 3 codes on my 2003 Lexus RX300 AWD: P0171, P0174, P0136. I read online that p0171 and p0174 were due to a bad MAF (Mass Airflow Sensor) and the P0136 was a result of the previous 2 codes. So i ordered the MAF sensor from Amazon and installed it (very easy, about 10min). But after driving it for about 20 minutes all three codes came back. I then turned my attention to the P0136 code instead of the other two and read online that P0136 is the result of a bad o2 sensor (B1S2 - Bank 1 Sensor 2). This sensor (Denso 234-4215) is the OEM replacement for my 2003 Lexus RX300 AWD Bank 1 Sensor 2. I ordered it, installed it (about 45min - not too hard, as long as the nuts holding the sensor aren't too rusty) and all codes were cleared. I've driven the car now for over 500 miles and the engine light is still off. I took my car for emission testing (which it had failed before) and it passed it w/out a problem.I think that changing the o2 sensor instead of the MAF in the first place, would've solved the problem but I don't know. Maybe, the MAF sensor needed to be replaced anyways (this is what i keep telling myself so I don't feel bad for spending $90 on it).All in all, i'm a hapy DIY'er because I saved myself a ton of money by not taking it to a mechanic.

facil de instlar

It didn't work. My grandfather wanted me to order this for him but it doesn't work

No codes yet for city driving In 2 weeks.Will see after long drives.

J'ai recu la sonde rapidement,, une fois installé elle fonctionne très bien,, le voyant moteur ne s'est pas rallumé,Mon Lexus rx 300 , avait le code p0136,, (groupe1, capteur2).problème réglé!

Delivered quickly.My vehicle has better fuel Milage now.Exact replacement.

very good

Great quality OEM part. Easy to install and fit perfectly. Don't get ripped off at the dealer and buy it here.Oxygen sensors are one of those parts where you do not want to cheap-out on by using a non-OEM part. This is genuine Toyota OEM quality.