09 Audi A5 3.0 tdi Fuel pressure issue

[sprinter11]

Hi Guys

before I set fire to my a5, I've got a low fuel pressure issue when full throttle.

this is the only code.

Parts changed:
fuel filter, inline fuel pump, intank fuel pump, fuel pressure switch, fuel presuere regulator, hpfp!

Same issue. (((

2009 a5 3.0 tdi

[stevieturbo]

sprinter11 said:

Hi Guys

before I set fire to my a5, I've got a low fuel pressure issue when full throttle.

this is the only code.

Parts changed:
fuel filter, inline fuel pump, intank fuel pump, fuel pressure switch, fuel presuere regulator, hpfp!

Same issue. (((

2009 a5 3.0 tdi

So before the parts cannon....did you actually try and diagnose anything ?

And what fuel pressure is low, and how are you determining this ? Is it the high pressure system or low ?

Most diesels will have a control solenoid or spill valve which regulates the high pressure side....is that one of the items you refer to ?