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Old March 11th 07, 01:05 AM posted to rec.autos.makers.vw.watercooled
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Default 1999 VW Jetta engine codes

On 10 Mar 2007 13:49:44 -0800, " > wrote:


>advice. And again, more info would be appreciated about rich/lean
>faults.
>

http://www.obd-codes.com/trouble_cod...gen-sensor.php
the link above is some info on the 0172 code

below : meaning of p1128 and a link for a bit of info on it
P1128 Long Term Fuel Trim B1 System Too Lean
http://www.obd-codes.com/forums/1709...-1128quot.html

Both codes can be caused by vacuum leaks it sez. I'd start there.

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