Bosch MAF Sensors: Identical or Different?

Hello,

The mass airflow sensor (MAF sensor) is defective in my Audi A4 with a 110 hp engine and an AFN engine code.
A 028 906 461 is installed.
As I have researched (through various forums, eBay, etc.), the first three digits (e.g., 028) are supposed to specify the shape of the plastic tube where the actual mass airflow sensor is installed. The last six digits probably refer to the characteristic curve (?), i.e., gasoline or diesel engine, horsepower, etc.

Since the only defective part is actually the inserted sensor, it should be enough if I get a cheap new (any brand) MAF sensor that has the designation '906 461' on the back.

I would then install it. I don't need the casing, because it's either too short/too long or, in any case, the holes probably won't line up.

Does anyone have any further information, or is my reasoning correct?

LMMs (likely referring to Mass Air Flow sensors) are installed in all vehicles manufactured by the Volkswagen Group (VAG), as well as in other brands such as Audi, VW, Seat, Skoda, Opel, and Volvo.

Best regards,
Oliver.

Your assumptions about the meaning of the VW number are incorrect.

And since you can draw conclusions from all sorts of incorrect information, I can't really comment on what comes after that.

Go buy a new one from VW, that's it - you'll still have to pay those 80 euros .

Okay, please provide the German text you would like me to translate into English. I will only provide the translation.

What's going on now? Didn't you just bring up this topic for discussion and receive some clear statements about it? If you would actually use the search function, you would know the answer!

Hello Joergs,

My previous question concerned the differences between Pierburg and Bosch mass airflow sensors (MAF sensors).
I want a genuine Bosch mass airflow sensor with the original characteristic curve.
Furthermore, I have definitely made extensive use of the search function.

My current question concerns the use of the same sensor in different Bosch mass airflow sensors.

So, for example, very specifically:
Is the actual sensor (the one that is screwed into the housing with Torx screws) identical for Bosch part numbers 028 906 461, 06A 906 461, and 038 906 461?

Best regards, Oliver.

...as far as I know, yes.

@joshua
Hmmmmmmm...

Apparently not! Otherwise, you would have at least stumbled across this page.
I am unable to access external URLs, so I cannot translate the text from the provided link. Please provide the text you would like me to translate directly.

If you had read a little further, you would have found a thread by michaelII where he describes the structure of the ET number. This would have shown you that the first three digits indicate the vehicle type, and the rest is the actual ET number. From this, it follows that: if they are identical... they should actually be identical anyway if they come from the same model year with the same engine code.

(An exception might be the AFN engine, which also used the older Pierburg with a 6-pin connector...)

@Thomas
Thank you.

@joergs

I already read the thread (which is where I got that information or assumption), but it was quite a while ago.
Can you please provide the link to the thread mentioned by michaelII? I'm interested in it but can't seem to find it.

If I were to summarize this now, it would mean that...
that the actual (replaceable Bosch) MAF sensor is identical, as long as the last 6 digits, plus any possible letter, are the same.
Sure, I will translate the text from German to English and provide only the translation without any explanations. Please provide the text you would like me to translate.

Best regards, Oliver.