P2290 Issues Discovery 3 2005

[BusinessConnected]

Good Evening Guys:
Have a 2005 TDV6 Discovery 3 which I purchased last year. The P2290 issue has been a consistent issue since I grabbed the car... generally speaking it doesn't rear it's head unless its under specific conditions.

Driving the car normally with a light foot doesn't seem to bring about the fault...only when you have the foot planted (generally from a standing start to around 80-100kmh) and/or Driving under loads up hills etc..

Now I understand the general consensus is Faulty High Pressure Fuel Pump... However that was replaced on 17 April 2018 by Les Richmond in Thomastown Victoria. I've also replaced the Fuel Filter and In Tank Low Pressure Pump also.
I've cleaned the MAF and Blocked EGR's etc also..

Anyone else have any thoughts/ideas that might be applicable?

I really don't think it's the Pump Itself... I can see the Rail Pressure under High Revs/Foot to the Floor in certain gears etc happily reaching 160000kpa etc... Which seems about right. It's only under these particular scenarios does it seem to stick at 60,000kpa and Hold there with the Engine System Fault Error.
Shifting the Car into Neutral... Turning it Off/On again and Putting the Car in Drive resolves the issue.

[justinc]

Can only be the pump, the 60k level unchanged and then faulting is a bit of a giveaway... even new pumps have been known to fail... QC isn't what it used to be IMO...

[BusinessConnected]

I understand what you mean... But I'd expect a Faulty Pump to essentially be incapable of delivering the High Pressure into the Rail all the time... not just under the "Foot to the Floor" Situation at Higher Speeds.
The Fault will never occur going up a Hill at Say 5000RPM at less than 60kmh... which I would think would be a more taxing situation.

It occurs more when shifting into 3rd or 4th Gear at around 80-100kmh.

[justinc]

A sudden change in volume and delivery demand can be the reason, not necessarily a constant high flow.

[justinc]

Common Rail Injection System Pressure Control (https://www.dieselnet.com/tech/diesel_fi_common-rail_control.php)

[Ean Austral]

I have just changed both high and low pressure pumps which seems to have fixed 1 problem, now I have a fault when the car gets to 3500 rpm and the code is something like low injector pressure.

I am am unsure if this is new or not as I never rev the car to that RPM very often. It's at the local Indy who is going to do an injector test .

I am not sure what the code for the fault is but sounds similar to yours .

Cheers Ean

[BusinessConnected]

Ean:
Sounds very similar. I've got mine booked in at Les Richmond in Melbourne to get an ECU Flash done and/or replace the High Pressure Pump.
I've found the Pump was actually replaced by them 11 months ago... so should be under Warranty.