🔥 Denso 234-9041 Air Fuel Ratio Sensor: Enhanced Engine Efficiency and Performance Review

This sensor worked great on my 2006 Toyota Avalon 3.5L V6. I replaced B1S1 which is on the back next to the firewall. I ended up having to remove the air filter to get to the engine and remove the clip. The only thing was that this wire was longer than the original, but that wasn't a problem. This is the same sensor for the B2S1, located at the very front, that you see when you open the hood. It should also be noted that there is also a small tube of anti-seize for the threads, so you don't…

My 2004 Camry has an oxygen sensor before and after the catalytic converter and an air and fuel sensor on the exhaust manifold. My check engine light came on. The error code indicated that my bank 1 sensor 1 was not working properly. Replacing the mass air flow sensor solved the problem. It was pretty easy to fix. I removed the shielding over the exhaust manifold and used the sensor removal bushing to pry it out. I didn't really know what I was doing so it took me about an hour to replace this.

DO NOT BUY FROM THIS SELLER! I bought this sensor 2-3 weeks ago. After getting the sensor I installed it and noticed a lot of smoke coming out of the sensor. I waited a few minutes before turning off the engine, thinking the smoke was coming from the Anti-Size. After driving the car about 15 miles my check engine light went out with code P2237. After removing the sensor, I measured the voltage of the wires with a voltmeter and found that there was a weak circuit on one of the connecting wires…

The check engine light came on with code P2195 on my 2004 Camry LE 2.4. The sensor's original part number was 89467-33080 (see photo). This Denso sensor is an overhead sensor in the engine compartment. When I ordered this new sensor, I removed the heat shield surrounding the exhaust manifold. I occasionally applied a rust penetrant and gently tapped the original sensor with a hammer for a few days to break up the rust before the new part arrived. The defective sensor came out easily. After the…

My car is a 2008 rav4 base 4wd. I had a check engine light. VSC and all-wheel drive. There was a code reader (Bluedriver) that informed me of the problem. Bank 1 Sensor 1 stuck. I tried 2 sensors from ebay and none worked. They misfired and even after resetting the ecu the check engine light came back even though a new sensor was installed. I googled a lot and found that Denso makes real oxygen sensors for Toyota that are assembled in the US, not China. It's important, trust me. Chinese things…

I had this problem: On the dashboard: VSC + Check engine + 4WD light on. After installing the product I've ridden over 200 miles in the last few weeks and still have no problems. I don't expect anything either! Here's how I did the $400 job myself: --- I have an OBDII reader that helped me pinpoint the cause. This is an air fuel sensor aka upstream O2 sensor aka bank 1 sensor 1 of the RAV4. It determines the stoichiometric ratio of air and fuel in the combusted mixture (the ratio at which the…

Bought 3 sensors before what AMAZON said was an upflow sensor and fit my car. The lesson is, DO NOT trust Amazon! I couldn't read the part number on the old air/fuel mixture sensor so I had to count the holes in the old sensor's tip (I had 7 total, 6 around the cylinder and 1 at the tip). And the only one that had 6 was this part #234-9041. Oreilys stocked 2 of these for $169.99. HOORAY! I paid $124 with shipping tax. Three other sensors I bought through an ad were replaced with downlinks after