Member Since: 11 Nov 2013
Location: Aude
Posts: 15
Can any Help with Limp mode ,terrain response fault p2290
Hi guys driving back from Spain yesterday terrain response lights up on dash not work then she goes in limp mode & dash lights up engine fault , stop car restart fine for a good few miles ,does it about five times but manage to get home to France , get up to today & off I drive for 80 miles no problem Strange, go to drive home end of day do 5 miles same problem again terrain response fault , limp mode , stop start fine for few miles get home now won't start aahh, cleaned map sensor still no go, no fault on dash ?????? Been very hot hear ?? Also been doing some very steep hills ?? Any help welcome miles from anywhere here many thanks
11th Sep 2014 9:00 pm
ChrisD3
Member Since: 02 Dec 2012
Location: Hampshire
Posts: 263
Member Since: 11 Nov 2013
Location: Aude
Posts: 15
Wot start fault code p2290 & p140a
Thanks chris getting no where as I am in South France miles from man kind !! ordered new fuel filter LD.will start there ,car wot start now only when I plug it in to live data ??? I am hoping it's the fuel filter also have code p140a coming up egr problem ??? Not sure if mine have been blanked french car & also my lynx wot can't find terrain reponse module ??? Any idears welcome lonely out here in the Pyrenees !!!
Can you hear the in tank fuel pump running when you turn the ignition switch on, and check for fuel at the bleed valve on top center of the engine. P2290 is injector control pressure to low.
I had that. Cured with a new HP Pump. But can also be several other much cheaper options.Mark.
2006, D3 SE Auto - gone but not forgotten.
2014 BMW 530d M Sport Tourer.
1977 Triumph Spitfire 1500
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14th Sep 2014 11:04 am
Paul71
Member Since: 11 Nov 2013
Location: Aude
Posts: 15
Flack wrote:
Can you hear the in tank fuel pump running when you turn the ignition switch on, and check for fuel at the bleed valve on top center of the engine. P2290 is injector control pressure to low.
Flack
any way of testing pump & why does she start. When I plug into live date on lynx ??? What's involed in removing pump thanks
14th Sep 2014 11:31 am
Robbie
Member Since: 05 Feb 2006
Location: ¯\_(ツ)_/¯
Posts: 17932
Yes you can test the pump without removing it. There are 4 main methods:
- Pressure test via the test valve
- Oscilloscope on the electrical input (you can even spot broken impellers with this)
- Voltage drop test
- Ammeter
Voltage drop test:
Click image to enlarge
25 Amp Fuse = 2.36mOhm or 0.00236 Ohms
Measured @ 0.0235v or 23.5mV
= 9.95763 Amps
Ammeter / amp clamp:
Click image to enlarge
Clamp on fuel pump circuit = 9.9 Amps
Whilst the pressure test is an absolute indicator of the fuel pump working the scope, voltage drop and amp test will check the integrity of the control system and the car wiring too.
Land Rover - Turning Drivers into Mechanics Since 1948
Member Since: 02 Dec 2012
Location: Hampshire
Posts: 263
It's been said in the past that
Brake switch or brake light bulbs can cause similar faults
If you can't see one of your ECUs that's a concern unless your diagnostic tool isn't capable of seeing it
If it was missing I would have thought your tool would have shown faults to match
I had similar fault with a missing ECU but mine was the transfer case control module
And this was because I got it wet after cleaning the engine bay
I also have experienced the blocked fuel filter after a service by land rover
But the engine just wouldn't tick over after blipping the throttle but that didn't store any fault codes
Chris2005 D3 SE Auto
14th Sep 2014 12:04 pm
Robbie
Member Since: 05 Feb 2006
Location: ¯\_(ツ)_/¯
Posts: 17932
The symptoms may be similar but I would be very surprised if a brake circuit problem would preclude a normal start as the P and C BITs are suppressed during the start sequence.
Land Rover - Turning Drivers into Mechanics Since 1948
Member Since: 11 Nov 2013
Location: Aude
Posts: 15
Sorry not sure this is correct 0.06 ohms taken tank out got fuel pump out very dirty ,powered it up with battery nothing , cleaned nothing , gave it a tap started working seems to run fine now not sure if buy new or was it down to the dirty filter on pump also notice I've got prop shaft mount gone so better do that while tank is out guess off the road for while as parts take over a week to get here in Pyrenees so can't put back yet silly too , hopfully it's cured it fingers crossed go days work thanks guys. Erg valves how can I tell if done or not because I've got fault. P140a too many thanks
14th Sep 2014 2:28 pm
Robbie
Member Since: 05 Feb 2006
Location: ¯\_(ツ)_/¯
Posts: 17932
Banging the tank is a standard way to diagnose a bad pump so if it runs after tapping it it does need replacing.
You can look either side of your engine for the presence of blanks. If you have no braided hose from the EGRs to the intake manifold then you have complete blanking. If the hoses are still there then check for an extra bit of metal sandwiched between the EGR valves and the hose. Also check your intake manifold as if the big plastic shutter has been removed or disconnected then probably blanked and if left and movable then probably not blanked.
Land Rover - Turning Drivers into Mechanics Since 1948
Member Since: 02 Dec 2012
Location: Hampshire
Posts: 263
Hi Paul 71
Sounds like your getting towards the cause of the problem
Hi robbie I bow to your knowledge
Chris2005 D3 SE Auto
14th Sep 2014 4:34 pm
Robbie
Member Since: 05 Feb 2006
Location: ¯\_(ツ)_/¯
Posts: 17932
Thanks but don't bow to me as I am still learning too as these vehicles still present surprises.
There are a number of technically minded members and sponsors on here who endeavour to provide diagnostics and this mini-comunity exchanges PMs more regularly than you would realise when something odd comes along.
Land Rover - Turning Drivers into Mechanics Since 1948
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I bow to your knowledge 
