*Lots* of data feeds the Readiness Codes - at least one of which ain't ready
in your case. It could be something as simple as a loose or faulty fuel tank
cap (hint hint).
Reading the Readiness Code takes all of a minute. Probing deeper into the ECU
to dump error data takes a couple of minutes more. Fixing what is found takes
the real time. I have no idea how much a shop charges for this - I use my
bought copy of VAG-COM on my laptop to do that...
'00 s4 6spd
I had a similar problem about a year ago. The light came on and stayed but
there was no detectable loss in engine performance. Turned out it was the
catalytic converter which, fortunately, was still under warrenty.
My light came on last week, first time in 2 years. Chucked the Vag-com on
and it was getting a low reading on MAF, looked under the engine and noticed
the hose from the inlet manifold had broken, looks like a bad design, so i
just cut some of and re attached it, job done... :) reset code in 2 mins and
im on my way
If the light blinks then I believe that is sign of a more serious problem
that needs attention immediately. If the light is just on staedily, then it
could be due to simply a random event like a brief misfire. In such a case,
if the problem does not recur, the light will usually go off by itself after
several days in which case there is no need to do anything. You can probably
drive it for a few days to see if that happens before taking it in for
service. Also make sure to check the gas cap is on properly.
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