Rear O2 sensor part number 2015 S3?

[2015S3]

Does anyone have this rear 02 sensor part number? I want to swap it out to see if my issue goes away. There are a ton of different ones on ebay, I don't feel like paying $200 to do a test.

[EmmanueleDesign]

What's your issue David? The sensor part number is 06K906262AC.

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[2015S3]

I think I May have it solved.

Long story short, had a spacer with the stock ECU JB1 box and kept on getting a lean code.

Since then I updated to Eurodyne stage-2, I left the spacer in and was getting the code much more quickly, within 20-miles. Eurodyne told me to take off the spacer, just did that yesterday and ran all day and this morning on way to work with no code (hoping that was the issue).

[EmmanueleDesign]

If it's the code that indicates too lean, it would be the spacer being too restrictive.

[2015S3]

it was P2270

Faulty HO2S12
- Lean Air/Fuel Ratio- Check fuel system
- HO2S12 harness is open or shorted
- Blocked converter

[Baggio]

Glad to hear you solved the problem.

[2015S3]

Hopefully fingers crossed