Bartenderfloyd

Does anyone know what could be causing this? The MIL was on for a while and then turned off. It seems like when the weather is warm the light comes on and in cooler weather the light stays off. I ran the diagnostic (while the MIL was off) and got this:

Address 01: Engine (J623-CGXB) Labels: 06E-907-551-CGW.clb
Part No SW: 4G0 907 551 A HW: 4G0 907 551 A
Component: 3.0l V6 TFSI H07 0006
Revision: --H07---
Coding: 0A2A0034052600060000
Shop #: WSC 02391 785 00200
ASAM Dataset: EV_ECM30TFS0214G0907551A 002007
ROD: EV_ECM30TFS0214G0907551A.rod
VCID: 275D181C5E079C190F5-8072

2 Faults Found:
6323 - MAP/MAF <-> Throttle Position Correlation
P0068 00 [109] - -
Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 19
Mileage: 80888 km
Date: 2015.04.06
Time: 16:38:04

6307 - MAP/MAF <-> Throttle Position Correlation
P0068 00 [109] - -
Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 19
Mileage: 80888 km
Date: 2015.04.06
Time: 16:38:04

Readiness: 0000 0000

I thought it was a dirty MAF sensor or Throttle body but when I went to clean them I discovered there is no MAF sensor in the usual place (do we even have one?) and the throttle body was pretty clean. Thoughts?

jr'sAudiA6

Try this link P0068 MAP/MAF - Throttle Position Correlation DTC. It may help you resolve the issue.

Bartenderfloyd

Update for anyone in the future with a similar code. I performed the Throttle Body Alignment (Throttle Body Alignment (TBA) - Ross-Tech Wiki)) about a month ago and haven't seen the code since.

u2jrmw

I just got my car back from 35,000 mile service and the MIL came on with the P0068 code.

I have a call in to the dealer and I followed the link above. Am I right in saying that it is probably something minor that the dealership should be able to resolve pretty quickly?

IknowHuhA6

More info...
https://www.audiworld.com/forums/a6-...rvice-2895901/

Bartenderfloyd

My MIL has be going on and off since I posted this original post. Tried the Throttle Body Alignment and cleaned the throttle body. Both fixes lasted a few thousand miles and then the light came back on. At this point (66,000 miles) I'm just going to wait until something breaks so I know what exactly to replace. I don't have the patience or the time to drop the car off at a shop for days while they do exactly what I did and get just as stumped as I. If you could post the fix that would be great but I suspect it's a tiny manifold leak somewhere that I will never find.I will say that the car rides and gets the exact same gas mileage with or without the light on. Maybe it's really a malfunctioning MIL..LOL!

Bartenderfloyd

Update: I actually removed the throttle body today to clean it and realized that I thought I had cleaned it well but missed it by a long shot (didn't remove it last time). Long story short, it was super easy to remove the throttle body, just 4 torx screws and a plug (one of those pain in the *** plugs that has 2 clips). I was hesitant to remove it at first but after inspection realized it was pretty simple. I used throttle body cleaner and cleaned it out real well. Did the Throttle Body Adjustment and cleared the codes. Let's see how long this lasts.

MacEwen

Did it last long for you?

I have the same code on my 2005 A6 3.2L. Just digging into the car specifics now. Do we have a MAF?

Bartenderfloyd

the MIL is still gone and I just turned 75K miles on the odometer so I'm pretty sure I got it. Not sure about the 2005 but I do not believe the 2012 has a MAF, at least not in the usual place they would be. I see 2 MAP sensors and a TPS of which neither of them are giving me issues.