How do I read Engine codes on a '95 A6? Also an EGR Question...

[Tyson Varosyan]

	Hi guys,

My dad's '95 A6 throws a Check Engine light now and then. We had the codes
pulled at a local shop and it came up as EGR valve malfunction. Personally,
I am of the frame of mind that EGR is a bunch of crap that does more bad
than good. On every performance car I own, that is one of the first things I
tare out. Contrary to popular belief, this actually improves my emission
scores...

Anyhow, the problem is that with the CEL going off all the time due to EGR,
we have no way of knowing if the car had developed other issues. I would
like to find out some way of pulling codes so that we can manually check
them now and again.

On other cars I own (OBD1 & 2) there is usually a pair of cables on the data
plug that can be tapped into with ether a light or a volt meter and then a
chart that translates the short & long pulses into code numbers. How is this
done on the A6?

Tyson Varosyan
Technical Manager, Uptime Technical Solutions LLC.
tyson at up-times.com
www.up-times.com
206-715-TECH (8324)

UpTime/OnTime/AnyTime