Leon FR 05 fault code 17964

[Reedy0]

When travelling up hills or similar when a lot of power is needed, my car goes into limp mode and EML comes on. Ignition off and on and it will be fine again?!

Plugged a vag in an got fault code 17964 charge pressure - negative

Could anyone guide me as to where to start fixing this?
Also have a long drive on weekend, would it break my car anymore doing this?

Thanks! Pete

 

[poliq]

I would start at the vacuum hose between N75 and the VNT mechanism. Start inspecting it from the turbo side..!
Hose was split on mine, exactly the same symptoms and fault code!

 

[Reedy0]

I would start at the vacuum hose between N75 and the VNT mechanism. Start inspecting it from the turbo side..!
Hose was split on mine, exactly the same symptoms and fault code!

Any chance of a pic/points to show the whereabouts of this hose mate? Also the n75 as Ive heard that mentioned a few times and wouldnt mind inspecting

Thanks!

 

[sssstew]

negative deviation means its getting less boost than it expects/requests, so its likely gonna be a boost leak somewhere, either a split pipe or bad joint on the boost hoses.

 

[Bondiblu]

I would start at the vacuum hose between N75 and the VNT mechanism. Start inspecting it from the turbo side..!
Hose was split on mine, exactly the same symptoms and fault code!

+1 and as said above a boost leak could give the same symptoms.

 

[Reedy0]

Ahh right. Wel I had it cleared on the vag and hasn't came back as of yet...
If its does I shall check all hoses going to / from the turbo

Cheers lads