Empowering DIYers Bank 1 Sensor 1 O2 Replacement Tutorial

I've been searching google and I am confused as to which one this actually is and what part I need to get. I am not sure if it is upstream or downstream, front ... The harness rubbed on the fender line and broke one of the wires. I hit one of the non-broken wires with electrical tape and proceeded home. It's a VERY common problem with the MK3s. Once you have the code you can easily identify which of the three sensors it is! Sad to say Bank 1 Sensor 1 is the upper one near the firewall.. But I recently did this on my 2G MDX and I can assure you its easier to replace ... Active Member ... Sensor 1 is the first O2 sensor down the exhaust from the manifold, so very close to the front of the car. Ignore the Bank 1 ... oxygen sensor replacement, passenger side, bank 1 sesnor 1 · 1. jack up truck and put jack stand under passenger side frame. · 2. remove ... #2 · Apr 5, 2024. air fuel sensor which is bank 1 sensor 1 (technically not an O2 sensor) voltage should be 3.3 what is yours ? 3.3 ? normal. What are Bank 1, Bank 2, etc.? Since this question pops up from time-to-time, here's an easy to follow diagram that illustrates what they ... I'm working to replace all (4) O2 sensors on my 2006 EX-LT after getting code P0154 for Bank 2 Sensor 1 (155k miles, prob originals). Im debating if its the O2 sensors or the exhaust? Is there anyway to really tell? Any help would be appreciated. Thanks!