P2451 cell on. How to fix?

[chunki84]

P2451

Evaporative Emission System Switching Valve Stuck Closed

 

Any one knows how to fix?

 

What is switching valve?

 

I changed ldp twice (even they are in good resistance values)

I checked valve on canister if it works at 12v.

Changes purge valve.

Checked purge valve (opens at 12v close at none)

Changed change over valve and checked with 12v.

Checked vacuum lines from both DVs to change over valve.

Changed cap.(I didn't think it's cap but I changes anyway)

Checked if there are any short/open circuits from ecu and valves on canister and ldp.

 

What do I need to do after? I am lost.

 

I went a porsche dealer and they told me they can't help because I altered parts.

Even I just changed few tubes and pipes which were leaked with aftermarket tubes and pipes.

What the...

[chunki84]

Fixed finally

 

found problem at multiple vacuum lines.

Edited October 26, 2016 by chunki84

[lewisweller]

1 hour ago, chunki84 said:

Fixed finally

 

found problem at multiple vacuum lines.

Do explain more which pipes you found and where, also some pictures would be helpful for future searchers. Many Thanks  chunki85