gilee_8

Hi guys,
I am just wondering, does Audi A6 uses wideband O2 sensor (front and back) or do they just use the regular narrow bad O2 Sensor?

I have a few old (working) ones laying around from my other previous cars, and just wondering if I can just use those (as long as they are 4 wires)

Thanks.

Shaun

There are no wideband sensors on our generation cars. The newer FSI cars do have them, though.

gilee_8

to calculate the A/F ratio (which affects the mpg) and the rear O2 sensors are only for emission purpose? or the computer uses all 4 O2 sensor to calculate the A/F ratio?

Cool, narrow band O2 is cheaper! and I can just reuse the old ones I have and save some money!

Thanks.

Shaun

That is, if our own resident experts don't chime in first.

gilee_8

I will wait a bit and see if any others chime in!
Thx again!

4Driver4

Buy the correct O2 sensors.

ga_mueller

Yup. Rears are to throw "catalytic convertor efficiency bank 1/2 low" codes...

Shaun

I think it throws those codes periodically just to let you know they're there.

RSdriver

Does anyone know where I can buy a drop in replacement for bank 1 right downstream oxygen sensor? Bought Bosch 16136 but came with black connector - need the orange like the attached but websites like jhmotorsports and ecstuning have conflicting info
I found the correct part below but won’t ship from Australia lol


This is the part I need - can only find from Australia

georgeb944

Having owned several A6 C5 2.7T cars in the past and present, I have learned that the Bosch generic o2 sensors work just fine. Ten minutes of stripping, crimping and heat shrink can save on average $120 per sensor. The cheapest right now is from Amazon, the 15122 sensor at $20.