View Full Version : Vag O2 sensor and MAF

12-17-2005, 04:49 PM
I have Vag
Where do I check and
how do I know that is bad?

O2 sensor

i'm getting about 16mpg mix


A4 99.5 2.8 V6 QAuto [wrench]

12-17-2005, 07:22 PM
the vag com should be under your steering wheel, where your knees are. called the knee pad. it is a com port that kinda looks like a printer port. stick that slut in there and vag the car. you will need software and a computer also. the codes can then be looked up or asked on here. most guys know the fault codes..

12-17-2005, 07:24 PM
wait, you have a vag com, or a Check engine light? what is going on here?

16 miles per gallon seems about right for a 2.8, might be able to get closer to 20mpg. i am sure the 2.8 guys wil chime in,

be more specific in your post..

12-18-2005, 04:51 AM
I know where to connect VAG
and I have Laptop and soft
and I did already Auto Diag to get codes
thanks anyway!

--my question is:
I just want to know where should check
(in vag-com menu) to get O2 and MAF readings and how will I know if a got bad MAF or O2 sensors?

thanks [race]