🔬 Walker Products 250-25035 Wideband Sensor - 5-Wire Review

Upper Driver Side Sensor that easily fits my 2012 Ecoboost F-150. The Check Engine light went out and efficiency increased by 2mpg.

I ordered 2 of these and Revain chose to ship them separately. The first arrived lost and the second was in a sealed box which clearly states no return if box is open. Yesterday I installed both on my 2008 Porsche Cayenne (3.6) and I still have the error code and was told the sensors in the garage have FAILED so I had to get them from the dealer which work great. Don't waste your money if you buy them.

My check engine light was on constantly on my MK6 Golf GTI. I have an ODB II scanner and it had multiple codes for Sensor 1 Bank 1. After verifying that it wasn't just a bad connection I started looking for a replacement. Since OEM O2 sensors are generally as expensive as if they were made of precious metals, I'm guessing this sensor is $400-$700? - I decided to try this first. On my GTI this sensor is on the back of the engine. But it's pretty easy to get hold of, so I won't be too upset if I…

My engine emissions light comes on every three or four months but goes off after three days. I have a 2006 VW TDI Diesel with a Van Anken fuel pressure booster that adds 25hp of torque. and the service engine light came on but went off and the service turned off after two or three days. Then I noticed my fuel economy went from 42mpg to 34mpg after 6 years of using the Van Aken booster. What happened was that the 02 sensor was now slightly faulty and stayed in the rich position, adding more fuel