I have a 2000 Passat 1.8L turbo 5spd FWD with a check engine light came on and the dash display says emission workshop. I have a friend with a scanner that it says Code P1128 we clear the code but it comes back on. We looked around for something clearly wrong but all we could find maybe wrong was a crack vacuum line on the fuel pressure regulator. No other vacuum leaks it runs to smoothly and it only has 28K Miles on it.
Any help would be great thanks.
Vacuum leak or faulty MAF!
How can you test the MAF what are some Vaules???
Thanks Eddie
according to a few posts and our indy garage mech. who read the codes and has had numerous people come in w/ the same thing ,says wait till the ethanol is stopped being added to the gasoline after winter and see what happens
Do you have a scanner that can read the block values, such as Ross-tech?
No I don't have a scanner are there some vaules out there I can read with an Omh Gauge.
Thanks
It's practically garanteed to be the MAF. By the way the warranty on the MAFs was extended to 7 years, 70,000 miles. To really test you need a better scaner like VAG-COM and need to run some test blocks. A regular OBD-II scanner will not cut it.
Thanks For the help I'll ask the VW Dealer about the Warenty.
No, you need a scanner that can read the fuel trim data which tells you if you got a vacuum leak or bad MAF!
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