Member Since: 17 Sep 2018
Location: county durham
Posts: 20
Multiple error codes / engine dropping into limp mode.
I am in need of some help please.
I have a 2007 LR3 2.7v6 diesel which goes into limp mode whenever i go above 70mph for any length of time. I get the engine system fault flashing on the dash.
I have a Icarsoft code reader which when connected reads codes,P023D, P132B, P0490 and P045C.
I have read the fault description for P0490 and P045C which are related to the EGR valves. Unfortunately, they were removed last year after some earlier issues with loss of power. This work was carried out by a garage, not myself.
Unrelated I hope but, the gearbox was replaced due to an issue with selecting 2/3 gear. The loss of power started some months later.
If i stop and restart the engine the fault clears and the cars runs perfectly.
I see from the code reader the P023D and P132B are turbo related faults.
Could these faults be related to a faulty / dirty sensor?
Any help would be much appreciated.first time owner of a disco 3.
working my way through some issues with it.
5th Sep 2020 11:01 am
PROFSR G
Member Since: 06 Mar 2017
Location: Lost
Posts: 5036
Check the MAP sensor is clean, if not use brake cleaner (no tools) to get the crud off. Also, check the actuator rod on the turbo is moving freely and lube it as necessary. It's usually a simple fix and there is lots info/posts on here if you do a search. yµ (idµ - eAµ) ψ=mψ
5th Sep 2020 1:28 pm
Sidestick
Member Since: 22 Apr 2012
Location: Rome
Posts: 2321
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5th Sep 2020 2:27 pm
jenseneverest
Member Since: 12 Jun 2017
Location: somewhere
Posts: 769
Member Since: 17 Sep 2018
Location: county durham
Posts: 20
The egr valves were removed last year right after the gearbox was replaced.
As of this afternoon i have removed and cleaned the MAP sensor. Below is the picture i took before i cleaned it.https://www.disco3.co.uk/gallery/albums/userpics/56685/thumb_20200907_105040~0.jpg
I took the car for a drive and when i got up to around 70mph the power drop off. only message displayed was Special programs off.
I looked at the error cades and they were the same as before.
I then checked the Turbo actuator rod which travelled around 1.5cm freely.
Put everything back together and started the car. Within 30 second i got the error message on the reader P045C Exhaust gas recirculation B control circuit - Low.
Can anyone suggest what i can try next.first time owner of a disco 3.
working my way through some issues with it.
7th Sep 2020 2:09 pm
Lrsg
Member Since: 10 May 2020
Location: Norway
Posts: 77
Are your EGR sensors still connected? If yes, try to disconnect the sensors. If the sensors are plugged in with EGRs blanked, it may throw up faults, usually when the engine is cold.
7th Sep 2020 3:07 pm
PROFSR G
Member Since: 06 Mar 2017
Location: Lost
Posts: 5036
Is your EML coming on? When the EGR's were blanked there should have been a software patch loaded to prevent it, as your MY car will/should be EU4 emissions protocol!
If your EML is not coming on with only the EGR dtc's present, the patch has been fitted and is working fine. The presence of the EGR DTC can be ignored, but the EML will come on if there are any other codes logged alongside it!yµ (idµ - eAµ) ψ=mψ
7th Sep 2020 3:17 pm
darrind
Member Since: 04 Jul 2008
Location: In A World of My Own!
Posts: 2889
When I had Turbo actuator sticking on my first D3 there was plenty of travel on the movement but due to general Gunk and corrosion on the actuator the system was tripping out because it didnt seem to react in the way that the car expected, therefore threw up codes. Having lubed it up with WD40 and really worked it for around 20 minutes it was much smoother, and lasted for a couple of days then went back to doing the same thing again, it would throw the car into limp mode after a second or two on boost.
I switched to using GT85 to lubricate it, and really doused it over another 30 minutes of moving back and forward with a wire skewer hooked over the actuator, and forcing the GT85 down a tube onto the actuator.
Sorted it for the rest of my ownership.Must stop buying shiny toys....
7th Sep 2020 10:01 pm
erniee
Member Since: 17 Sep 2018
Location: county durham
Posts: 20
Quick update. I went for a drive yesterday to check how things have progressed.
At around 75mph "Special programs off" flashed up and there was a marked loss in power.
Stopped and turned the car off then on again. Fault cleared from dash and car behaved as normal.
Later Engine System Fault appeared but with no noticeable loss in power.
When I got home I checked to see what faults were recorded.
I got the following....
1 P045c.. Exhaust gas recirculation B control circuit - Low
2 P0490..Ehhaust gas recirculation control - circuit high
3 P023D..Manifold absolute pressure - turbocharger / supercharger boost sensor A correction.
4 P132B..Turbo / supercharger boost control A performance.
As I have removed and cleaned the MAS sensor and checked and lubricated the Turbo actuator rod, what should I be checking now??.
I have ordered a new fuel filter (the right one for my car) but while I await its arrival could I be checking anything else.first time owner of a disco 3.
working my way through some issues with it.
10th Sep 2020 12:44 pm
PROFSR G
Member Since: 06 Mar 2017
Location: Lost
Posts: 5036
When the fault occurs does your EML come on?yµ (idµ - eAµ) ψ=mψ
10th Sep 2020 1:02 pm
erniee
Member Since: 17 Sep 2018
Location: county durham
Posts: 20
Yesfirst time owner of a disco 3.
working my way through some issues with it.
10th Sep 2020 1:16 pm
PROFSR G
Member Since: 06 Mar 2017
Location: Lost
Posts: 5036
I'm trying to establish if the EML is being activated by the EGR's alone! The fact that there are other dtc's present makes this difficult. When the EGR's were blanked the garage should have fitted a patch to prevent the EGR's activating the EML. (even though those EGR dtc's will always be present!)
So leaving the EGR's aside for now, P023D and P132B refer to boost pressure loss/sticking turbo actuator. I know you have already checked these, but in the first instance either there is a pressure leak somewhere in the system between the turbo and the inlet manifolds. Or, the turbo actuator not reaching it's full intended travel, or both!
Whilst you are waiting for the fuel filter, check again carefully the hoses and clips from the turbo to the intercooler. The intercooler itself for "wet spots", and especially the long hose from the intercooler to the intake plenum. And, the plenum seal where it is held by the large snap clip. Beyond that, there are the two seals at the "Y" section which enter the inlet manifolds as these can perish and harden.
If you fashion a hook from a coat hanger and place it on the ball end of the actuator rod there should be little or no resistance to your moving it forward and back. If there is, either the joints are dry of lubricant or the turbo vanes are clogged with carbon build up. Lube the rod as best you can (I use high temp ceramic or copper grease mixed with engine oil and feed it in with the bent tip of an artists brush)
If you have the plenum removed, check the throttle butterfly has been removed when the blanking was done.yµ (idµ - eAµ) ψ=mψ
10th Sep 2020 2:40 pm
gstuart
Member Since: 21 Oct 2016
Location: kent
Posts: 14111
Hi den
Hope this finds u well
Plus 1 ref those intercooler hoses, I had the P132B error and indeed the turbo actuator arm was sticking , right at the end of travel , also emptied a can of GT85 whilst moving it back and forth
Also as u say ref hose jubilee clips , on my horizontal intercooler hose where its connected onto the turbo the clip was broke , had signs of oil , able to get a new clip on , which sorted out the limp mode error
Click image to enlarge
10th Sep 2020 4:05 pm
PROFSR G
Member Since: 06 Mar 2017
Location: Lost
Posts: 5036
Hello young fella!
Hope you'e well Gary. yµ (idµ - eAµ) ψ=mψ
11th Sep 2020 12:09 am
gstuart
Member Since: 21 Oct 2016
Location: kent
Posts: 14111
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