Fault Code 17549- help please

[WSMRT18]

I have a 2000 6N2 Gti on 115k miles with fault code 17549,

I have searched the code and found this information:

Possible Causes:
Mass Air Flow Sensor (G70) OR Manifold Pressure Sensor (G71) faulty
Vacuum Lines faulty

source: http://wiki.ross-tech.com/wiki/index.ph ... 141/004417

I have little experience checking for vacuum leaks but i dont think I there is one, are the MAF sensors known for needing replacing or could it be the maifold pressure sensor?

Any one had over come the same problem before?

Thanks

[WSMRT18]

Turns out it doesnt have a MAF sensor but a MAP sensor, i'll give that a clean.

[alexperkins]

Check the Brake servo hose isn't split. It's a common problem on the polos.

[WSMRT18]

Thanks Alex,

I have had a look and it does not seam to be split anywhere, the car idles fine but hesitates/stumbles under load and heavy accelaration.

Might have to take it to a garage which is annoying because I like sorting things out myself.

Thanks again helpful as always

[WSMRT18]

UPDATE:
Just found a vacuum leak on the brake servo vacuum hose, the actual hose isnt split but this connection somehow got damaged and has a hole in...

[alexperkins]

That should have a little cap on it but looks like its been snapped off

Vw sell the pipe as a new section and its not much.

[WSMRT18]

Thanks will give them a ring tomorow, not sure how it could have been snapped off dont think i have ever had to do anything towards the rear of the engine bay!

[alexperkins]

It's probably been broken for some time! Careless mechanics most of the time.

[WSMRT18]

Just picked up the new vacuum hose off vw, should there be a cap or some kind of hose that goes on the end of this?



Sorry if thats a stupid question, thanks

Will

[alexperkins]

A little green cap. You may need to buy it seperately.