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EGR live values fault?
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Jarvis
 


Member Since: 16 Dec 2009
Location: West Berkshire
Posts: 279

England 
EGR live values fault?

Friendly orange light in the shape of an engine has revisited the instrument cluster and my IID tool reports EGR problems Rolling Eyes

I thought I would monitor what was going on using the live data whilst driving.

All I get is zeroes for both command values, ~17% position for bank0 and ~5% for bank1 no matter whether cruising, accelerating or on overrun Sad

Has anyone got this to work?

IID BT tool (firmware latest) and Android phone with latest app.


I hope that it's just finger trouble!
  
Post #193846220th Apr 2018 2:25 pm
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lynalldiscovery
 


Member Since: 22 Dec 2009
Location: Maidstone
Posts: 7274

United Kingdom 2006 Discovery 3 TDV6 Metropolis LE Auto Bonatti GreyDiscovery 3

Ive never checked them whilst driving but sure mine sit at 5 percent give or take a bit at idle.
  
Post #193849420th Apr 2018 4:41 pm
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Sidestick
 


Member Since: 22 Apr 2012
Location: Rome
Posts: 2288

Italy 2008 Discovery 3 TDV6 HSE Auto Java BlackDiscovery 3

Have had same issue and few weeks later the left egr locked itself completely getting my engine in limp mode.
resetting it by the tool permitted to bring the car at the garage with both egr locked at 5% but engine running fine.

On my Euro4 model with DPF egrs are mandatory, on Euro3 you can blanked them and forget!
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Post #194514814th May 2018 4:19 pm
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ChrisLR3
 


Member Since: 02 Jan 2020
Location: Belgium
Posts: 11

Belgium 2009 Discovery 3 TDV6 HSE Auto Galway GreenDiscovery 3

I have the same issue. EGR 0 position => 28%, EGR 1 position => Always 5%
If i give full throttle for a while, EGR Goes to 1 % and stays there.
The EGR 0 and 1 Command are always 0%

Once I got the orange engine warning light and a fault code P0489 + Error message "Engine system fault.
Afterwards only the error message on the LCD and no fault code in the IIDTool.
When I hook up my friend's NanoCom, he gets the fault code P0489.

I'm searching quite a time to find normal readings of live values to determine what is wrong. Blanking is not an option as I have the Euro 4 model.

Thx
 IIDTool BT G3  
Post #21914754th Dec 2020 6:13 pm
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Flack
 


Member Since: 06 Sep 2006
Location: Preston Lancashire
Posts: 6245

England 2007 Discovery 3 TDV6 XS Auto Stornoway GreyDiscovery 3

The egr's only work up to a certain engine temp. if the engine gets to hot the dont move, you need to try and read the values from cold..

Flack Thumbs Up
  
Post #21915784th Dec 2020 11:26 pm
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ChrisLR3
 


Member Since: 02 Jan 2020
Location: Belgium
Posts: 11

Belgium 2009 Discovery 3 TDV6 HSE Auto Galway GreenDiscovery 3

I already did, no difference between cold and normal woking temp.
I have saved a lot of data. The problem is that I don’t have reference values. That way, it’s dificult to figure out what is really wrong.
For example, should the command value be the same as the valve position?
And, bank 0 valve, is it the left or right one?
I’m not yet experienced with the iid tool and have to learn a lot.
Thx for the help.
 IIDTool BT G3  
Post #21915905th Dec 2020 12:34 am
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Flack
 


Member Since: 06 Sep 2006
Location: Preston Lancashire
Posts: 6245

England 2007 Discovery 3 TDV6 XS Auto Stornoway GreyDiscovery 3

@ChrisLR3 Why not get on to Pete Bell at BAS and get the egr's deleted by a software patch, you have the tool to do it. You can forget about them then.

https://bellautoservices.co.uk/

Flack Thumbs Up
  
Post #21916185th Dec 2020 10:36 am
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Pete K
 


Member Since: 15 Jan 2016
Location: GL
Posts: 10392

England 2005 Discovery 3 TDV6 HSE Auto Rimini RedDiscovery 3

Yeah I don’t have confidence in all the live values reported.

The car needs to be warm, driving along at mid throttle for them to open .

Maybe you should read the voltage position of the working one first (with a
Meter at EGR or ecu)
You should see it open and close at ignition on and off
  
Post #21916225th Dec 2020 10:54 am
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ChrisLR3
 


Member Since: 02 Jan 2020
Location: Belgium
Posts: 11

Belgium 2009 Discovery 3 TDV6 HSE Auto Galway GreenDiscovery 3

Hello,
Thank you all for the advice.
I contacted BAS and I'm waiting for their answer.

As for now my conclusion is that EGR bank 0 is not working correct.
Now I have to figure out on what side of the engine is bank 0?

BR,
Chris
 IIDTool BT G3  
Post #21916645th Dec 2020 1:49 pm
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aja4x4
 


Member Since: 14 Apr 2019
Location: Westbury
Posts: 2459

United Kingdom 2005 Discovery 3 TDV6 SE Auto Zambezi SilverDiscovery 3

Bank 0 is on the right same side as cylinders 1,3 and 5
  
Post #21916725th Dec 2020 2:26 pm
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ChrisLR3
 


Member Since: 02 Jan 2020
Location: Belgium
Posts: 11

Belgium 2009 Discovery 3 TDV6 HSE Auto Galway GreenDiscovery 3

Thx a lot!
 IIDTool BT G3  
Post #21916995th Dec 2020 5:22 pm
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ChrisLR3
 


Member Since: 02 Jan 2020
Location: Belgium
Posts: 11

Belgium 2009 Discovery 3 TDV6 HSE Auto Galway GreenDiscovery 3

aja4x4 wrote:
Bank 0 is on the right same side as cylinders 1,3 and 5


I continued my research and found the following picture:


So this confuses me as the cilinder numbering is different in the workshop manual.
 IIDTool BT G3  
Post #21926419th Dec 2020 10:52 am
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Prette
 


Member Since: 16 Mar 2020
Location: Previously Stoke-ST4 (pre-pandemic), Mostly The Hague (NL) partially Lyngby (DK) certainly somewhere
Posts: 160

2007 Discovery 3 TDV6 HSE Lux Auto Causeway GreyDiscovery 3

ChrisLR3 wrote:
I have the same issue. EGR 0 position => 28%, EGR 1 position => Always 5%
If i give full throttle for a while, EGR Goes to 1 % and stays there.
The EGR 0 and 1 Command are always 0%

Once I got the orange engine warning light and a fault code P0489 + Error message "Engine system fault.
Afterwards only the error message on the LCD and no fault code in the IIDTool.
When I hook up my friend's NanoCom, he gets the fault code P0489.

I'm searching quite a time to find normal readings of live values to determine what is wrong. Blanking is not an option as I have the Euro 4 model.

Thx


I can confirm Bank 0 is on the right (seeing from inside the car) (UK driver's side - EU passenger side)
I have the same figures as you and the same error too.
My right egr is stuck open at 92% and 2 days ago it moved back to 83%. Not sure why.
My left egr is constant open on 5% never moved.

I used my iCarsoft to track realtime values and they are (supposed) to be accurate. At the moment i am running with right egr blanked with an emergency coin Whistle (that was the only way to continue driving at the moment - it is actually running better than before)

I suppose the engine light only lights up after 2 or 3 consecutive faluts as whe. I reset my it only lihhts again after turning off and on the engine a few times (i suppose that is when the ecu does the ckeck)
Below a certain value of % it shows the code but not the engine light.

Why you cannot blank the egr on your Euro 4???

I hope it helps. Good luck.
  
Post #21926849th Dec 2020 2:00 pm
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ChrisLR3
 


Member Since: 02 Jan 2020
Location: Belgium
Posts: 11

Belgium 2009 Discovery 3 TDV6 HSE Auto Galway GreenDiscovery 3

I analyzed the behavior of the EGR valves since a few days.
Am I wrong when I state that the EGR valves are mostly closed?
Reading the different posts on the forum, I conclude that the 5% is the closed value. (correct me if I'm wrong) The higher percentage is more opening.

My EGR 1 is mostly at 5% and goes to 92% when the engine is shut down and the key removed. The EGR 0 goes to Max 15% (In that case the next start up the fault appears on the LCD and the car gets in limp mode)

When the fault is cleared and the engine runs, both valves stay on 5% and the COMMAND values stay unchanging on 0%.

When there is no fault, the EGR values follow the COMMAND values. In some conditions I see that
the valves are opening to Max 9%.

My conclusion so far is that I have to replace the EGR 0 valve.

I can blank My Euro 4 engine if I change the ECU software (BAS Patch) I'm not sure if I have to delete the DPF in that case.
But In Belgium our bright politicians are thinking about changing the MOT procedures to detect whether there are things changed to the exhaust system...
In any case, I want the system working correct before blanking to be sure that I can always go back without trouble.
Thx for the help!
 IIDTool BT G3  
Post #21926959th Dec 2020 2:27 pm
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Prette
 


Member Since: 16 Mar 2020
Location: Previously Stoke-ST4 (pre-pandemic), Mostly The Hague (NL) partially Lyngby (DK) certainly somewhere
Posts: 160

2007 Discovery 3 TDV6 HSE Lux Auto Causeway GreyDiscovery 3

I don't think your EGR goes to 92% when the engine is OFF... i think that when the engine is OFF ignition key is off, the ecu is off and you no longer has live data from it (that happens to my disco at least). After some minutes with engine off i get a message saying module not available.

At least your egrs are working (and mostly closed).

EDIT:

If you connect your diagnostic tool and turn on the key to II (just before the ignition) select live values for the EGR command and "real position". you will see that at the start the valves should go from 0% to 90% and back to 0%. (at least that is what happened to me in temp below 5C) And suppose that is why sometimes I get error in both EGR and sometimes just in one. Yesterday, both where stuck open, I turned off and on again, and bank 1 behaved, whereas bank 0 Censored Big Cry .
  
Post #21927079th Dec 2020 3:16 pm
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