Fix for P2432 and P2433 Secondary Air Pressure Sensor Codes

[Keizer-S4]

Couple of months ago the Check Engine Light came on in my 2011 S4. Running a diagnostic scan revealed a P2432 and P2433 code telling me there was something wrong with the Secondary Air Injection System tied to the emission controls.
Knowing nothing previously about SAI and Volkswagen, I decided to do some research and learn how it worked in order to troubleshoot the problem.
There are one or two pretty good threads on the Audizine Forums and a couple of good Youtube videos explaining how the system works, but not much (hardly any, in fact) good information on how to correct my issue.
The following is a tutorial on how to replace the SAI Pressure Sensor if you have one of these fault codes.
Note, although it's at least a 2 hour job (less if you've done it before), it only takes a single tool... a long (recommend at least 14") thin-blade standard screwdriver. And I'll add good lighting.
New sensor should run between $80-$100.

[Krusty]

Don't suffer from this issue, however, this is very good info, thanks for posting. Also, did you run your VAG and everything is all good?

[Keizer-S4]

Don't suffer from this issue, however, this is very good info, thanks for posting. Also, did you run your VAG and everything is all good?

Yes. All good now! Just a faulty sensor.
I probably spent 8 total hours on the fix, as I spent quite a bit of time prior to ordering the replacement sensor just trying to find it. Then once it was found, planning the least invasive way to get to it.

[a4lownslow]

Another note to add is there is an extended warranty for the secondary air. This applies to insufficient flow codes which is the result of clogged ports in the cylinder head. 10year/120k


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