Replacing oxygen sensor
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Joined: Jan 2016
Posts: 152
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2009 CLK550 convertible, 2012 ,,E550 Cabrio, 2012 Audi Q5
Replacing oxygen sensor
My 2012 E550 Cabrio with 35K flashed the dreaded check light yesterday, went to AutoZone , code P2626 , O2 sensor pumping current trim circuit/open bank 1 sensor 1. I would like to replace the sensor myself but I cannot locate it. I checked from underneath and above , I can see the converter but no sensors. I am considering removing the inner fender liner next. Has anyone attempted this and can help me locate the pre cat sensor on the passenger side of my M278 engine.
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Joined: Aug 2004
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E550 Coupe 2wd (2016)
It should be right under your left foot or toes when in the right seat. I think it's pointing at your foot too, otherwise it would hit the eng mount. I think, itza fuzzy memory....
It's gotta be there before the cat, obviously, so just feel around. A little mirror on a telescoping rod, sold for exactly that, is super helpful for stuff like this, but either way I bet it's much easier to find if you're under the car.
Just be sure an use jack stands b/c I have two near skill crushing stories from not using them! One a jack slipped, the other the jack failed, instantly! :o Don't want that on your head stone
It's gotta be there before the cat, obviously, so just feel around. A little mirror on a telescoping rod, sold for exactly that, is super helpful for stuff like this, but either way I bet it's much easier to find if you're under the car.
Just be sure an use jack stands b/c I have two near skill crushing stories from not using them! One a jack slipped, the other the jack failed, instantly! :o Don't want that on your head stone
Thread Starter
Member
Joined: Jan 2016
Posts: 152
Likes: 18
2009 CLK550 convertible, 2012 ,,E550 Cabrio, 2012 Audi Q5
Thank you, will take another look. Just called a local (Sarasota Fl) independent shop, $135 to diagnose and $250-300 to replace the sensor. I can buy the sensor from Parts Geek for around $80 .
