P2288 problems - injector pressure too high

[billqut]

Hi I am having a problem which someone may be able to help out. On a trip the D3 went into limp mode and threw a P2288 code. I could not find any problems so decided to change the HP pump thinking it may be the PCV in the pump. Changed pump and same result, after clearing the fault almost immediately comes back - unless I can get to 80+ km/hr! At around 100 kph runs perfectly until you pull up anywhere then back comes limp and the P2288. Now the puzzle, with the FRP (fuel rail pressure) sensor unplugged the engine runs and the PCV and VCV valves sit happily around 22%. When I plug in the FRP the PCV valve drops to zero or less than 1% AND the P2288 immediately returns. In desperation I replaced the FRP but that did not change anything except my patience.
Anyone any thoughts?

[Graeme]

This sounds like a similar problem that occurs with the 4.4 TDV8 which is caused by a bad connection in the harness to the fuel pressure sensor that causes a distortion of the signal. The fix for the 4.4 is to cut out the 2 connector halves and fit a new connector and wiring tail direct to the sensor. I have a new sensor connector for when mines starts playing-up.

[shanegtr]

Hi I am having a problem which someone may be able to help out. On a trip the D3 went into limp mode and threw a P2288 code. I could not find any problems so decided to change the HP pump thinking it may be the PCV in the pump. Changed pump and same result, after clearing the fault almost immediately comes back - unless I can get to 80+ km/hr! At around 100 kph runs perfectly until you pull up anywhere then back comes limp and the P2288. Now the puzzle, with the FRP (fuel rail pressure) sensor unplugged the engine runs and the PCV and VCV valves sit happily around 22%. When I plug in the FRP the PCV valve drops to zero or less than 1% AND the P2288 immediately returns. In desperation I replaced the FRP but that did not change anything except my patience.
Anyone any thoughts?
Tried the simple stuff like changing the fuel filter? I get that fault every now and again (2005 D3) and a new filter sorts it out. In my case it seems like clogging in the filter causes the injector return pressure to get too high (the injector return flow runs back through the filter)

[Sable]

Good Day,
We are in Malawi, Central Africa and I have been having ongoing issues with the P2288 fault code. I have a 2005 LR3 2,7TDV6.

Started off with lumpy running, checked injectors and swapped out three of them. Using an ICarsoft LR2, I can now see that all the injectors are running close to a cylinder balancing offset of 1000 at startup, which is good. However, I now have a P2288 code that I can clear but immediately returns, putting it into limp mode. The Fuel pressure shows between 25400 and 32790kpa at idle, with the Pressure Control Valve reading 0%, and the Volume Control Valve reading 23.68%.
If I unplug the fuel rail pressure sensor, the fuel pressure shows 179990kpa but the PCV shows 14.8 to 16.13% and the VCV 23.35 to 25.15% at idle. Vehicle sounds fine, but the fault code now shown is P0193 (fuel rail pressure sensor high input). I can clear this code (one hears the engine stutter) but it comes back straight away.
Plugging in the FRP sensor, and the vehicle now throws the P2288 code and the PCV is 0% again.
I have tried a new fuel filter, changed oil plus oil filter, blown out the fuel return lines and checked that the fuel pipes go to the correct connectors on the filter.
I have not yet tried replacing the FRP sensor, although I think this will be my next move. I have heard that the FRP sensor connector, can throw false readings and that the connector is to blame.
Can anyone help please. Living in a very rural African country, all spare have to be ordered from South Africa and we are pretty much on our own as far as backup and support goes.
Your help would be greatly appreciated.

[willt123]

Hi Guys,

I had the same issue, I went from the P2290 to the P2288 to multiple other P codes.
I replaced the HPFP, two injectors, LPFP and the fuel filter.

Eventually, bit the bullet and took it to Triumph Rover Spares in Lonsdale, SA.
They diagnosed the ECU pretty much over the phone based on my symptoms so being at my wits end I took it to them.
They replaced the ECU - Not sure if just flashing to to factory would do the same thing. Their invoice line item was "Born Again ECU".

No problems ever since.