dpwalker224

I'm new here, so appologies if this questions is redundant or in the wrong place.

My girlfriend's A6 (2005 3.2L V6) is showing a P0103 OBD code. Recomendations I've found on-line are to try cleaning the MAF. My problem is finding the little (???) bugger. Can anyone point me in the right direction?

Thanks in advance.
dpw

audi bug

dpwalker,
You may want to recheck the code.
It is hard to believe but I think 3.2 FSI engine uses "speed density system" using manifold absolute pressure instead of mass air.
I said this because I could not find a mass air sensor on my 06 but found a manifold absolute pressure and temperature sensor. I could not confirm it even though I searched internet quite a bit.
In addition, I did not see P0103 listed in ALLDATADIY for 3.2 FSI engine.

gk1

I looked through the Bentley and there is no mention of a G70 MAF sensor for the 3.2. (Only for the 4.2 and the 5.2) It also only indicates the P0103 code for the 4.2 & 5.2

dpwalker224

Thanks for your help audi bug and gk1. If the 3.2L doesn't have a MAF, that explains why I can't find it.

I rechecked the code, cleared it a couple of times, and p0103 keeps coming back along with the check engine light. I thought there might be a quick easy fix, but looks like it may need to go in to the shop to unravel the mystery.

IMD

Okay> You have something wrong there. Either it's the year of the car or it's the size of the engine. If it's okay, if you give me the VIN number, then I can help you.
I need the VIN number to check the engine and transmission code.
Best,
IMD

audi bug

OK,
Did more search on P0103, and it is for "Mass or Volume Air Flow Circuit - High Input." So for our 3.2 FSI engine, it indicates MAP (Manifold Absolute Pressure) sensor problem.
The part number is "03C 906 051" and cost $46 in the INTERNET.
I think it is worth replacing it before taking to stealership.
It probably will cost about $60 at local dealership. It is common part to VW so call VW dealers too.

See the picture for the sensor.

dpwalker224

You guys are great! Your desire and ability to help is amazing, and deeply appreciated.

Here's the VIN - WAUDG74F85N104313

The engine looks just like the one in your post, audi bug, with the cosmetic skins removed. The front skin has 3.2 cast into it, so I think we are talking about the same model and engine.

I actually pulled the sensor that is labled "Manifold Absolute Pressure" in the image and looked at it. It's held in with two Torx screws and looks like a thermistor resting up against a small flat tab. I cleaned it with some contact cleaner, but this had no affect on the fault. I will try replacing it.

Thanks for the part number. Can you tell me where you saw it on the internet for $46?

Thanks again!

BlueSander

Did you reset the code after cleaning up?

dpwalker224

Yes. I reset the code after cleaning the MAP. The idle smoothed out, and the check engine indicator went off. After about 30 seconds the P0103 code came back along with rough idle. I turned off the ignition and back on and the check engine light was back on.

BlueSander

well, if that's case then you prob have to buy a new sensor then. Hope that will fix the problem.