justpassingthrough

Repost from another thread:

Hello all,
I am new to the forum but I am at a loss. I am looking to sell my 2003 a4 1.8T and just as I listed it, my CEL came on giving me a code of P0411 suggesting a secondary air injection issue. The rpms drop as soon as I let off gas at around 60km/hr (maybe around 3000 rpm?) as I am driving and I have to really press on the gas. I have already taken it to the mechanic and we found a pipe was completely broken. He was a family friend and told me it is an easy fix and thinks I can even handle myself and didn't want to charge me. I think I am capable enough I am just not familiar with german cars and can't seem to figure out the part. I will include photos, but it does not seem to be a vacuum pump pipe, but I could be wrong. It is the big pipe running along the left side of the engine. As well, I am not sure if it is one big pipe to replace or just the bottom half as you can see in the photo there is a connector and it seems the bottom half is what is broken. Any help identifying the part and more information would be great!

SS_RTR

It may be #15 in this link depending on where the break is.
2003 Audi Audi A4/Avant United States market: Engine Ventilation for cylinder block F 8E-3-040 001>> * 1.8ltr. 4-cylinder+ petrol eng.+ BFB,AMB,BEX

Part number: 06B103493M : https://www.ecstuning.com/Search/SiteSearch/06B103493M/

justpassingthrough

Wow awesome that really helps, thank you!!

lyleswk

I had something with the same symptom, but had a different hose broken; it was a 90 degree below the line where yours is which I think goes to the SAI. I would double check that the one that goes down to the SAI is also not broken since I doubt the one you replaced would cause the SAI code. Unless I am misinterpreting the picture...

justpassingthrough

From the research I have done, it seems that specific code means the pipe you're talking about but I had a look this morning and it seems perfectly fine, I also checked other parts I have seen that can break or wear over time and all seems well besides the pipe I am having issues. I included a photo that I hope will be uploaded properly lol. I will probably tear that tape off sometime tonight to check what part exactly is broken but if I'm lucky it may just be that little elbow pipe I need.

lyleswk

Maybe they are related. you will know once you replace the elbow and run it for a while.