ive got these codes...

[ian00uk]

just plugged my car into vagcom and ive got these codes. Anyone give me any advice?

1) 17608 Boost pressure control valve (n249)- havent a clue what this is.
2) 16684 Random/Multiple cylinder missfire detected
3) Cylinder 1 missfire detected
4)17705 Pressure drop between turbo and throttle valve (check d.v)- i havent even got a d.v!

also did a readiness check and the only thing it failed on was cat monitor failed or not complete, everything else passed

any help people?

[richw911]

What engine If its 1.8T could be your Black plastic Bosh DV? You said you done coil packs Spark plugs mabye?

[ian00uk]

its a 1.8t aum engine.i have got no dump valve on the car.yeh few months ago had all 4 coil packs changed. spark plugs is a possibilty.
the boost pressure control valve is the one i need to really find out bout.

[richw911]

its a 1.8t aum engine.i have got no dump valve on the car.yeh few months ago had all 4 coil packs changed. spark plugs is a possibilty.
the boost pressure control valve is the one i need to really find out bout.

I mean the standard Bosh plastic dv. Is the car remapped coz the standard dv internals fail for a pass time. Upgrage it to a forge 007p

 http://www.forgemotorsport.co.uk/content.asp?inc=product&cat=0006&product=FMCL007P

 

[ian00uk]

oh rite yeh i presume so. it use to have a atmospheric dv on the car which was taken off. yeh the car is remapped. would getting this sort that problem then. any idea on the boost pressure valve then?

[richw911]

Yeah i think both those codes relate to the dv. Get some new plugs see if this sorts the misfire bout £20 from halfruds  IIRC.

[Komenda]

These are all connected to the DV. Its recording a misfire, (no matter how small) as the car isn't getting a consistent air/fuel mix so can't time itself

[richw911]

These are all connected to the DV. Its recording a misfire, (no matter how small) as the car isn't getting a consistent air/fuel mix so can't time itself

Yeah makes sense now you say that 

[ian00uk]

just guna have to book it in somewhere lol

[richw911]

Just a thought is the car playing up because you say it had an atmospheric dv which will throw up codes, But did you clear the codes after you removed the atmospheric dv??