Citroen C5 2.2 HDI 2007 Mk 2 Biturbo

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howardaskew
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Citroen C5 2.2 HDI 2007 Mk 2 Biturbo

Post by howardaskew » 19 Jul 2018, 18:20

I have bought a C5 2.2 HDI 2007 Mk2 Biturbo Manual. VTX plus Car has covered 103,000 miles

The Engine Management light was on and anti pollution fault Lexia showed various EGR faults including short circuit and high voltage.
I am an Electrician who specialises in controls (Former Motorcycle Technician Early Eighties) and I thought it would be the EGR valve fault. Motor shorting rather than wiring?

I took my time as the Haynes Manual does not cover this engine model and replaced the EGR valve. Still the same fault. :(

So it looks like the wiring could have a fault.

I will add some Lexia screenshots.
This is the air live data
IMG_9085.JPG
It also comes up with speed control fault.

One of the faults listed is EGR throttle fault. Not to be confused with EGR valve. I assume this is at the throttle port?

I found a section on Lexia that activates replacement EGR valves but this just raised false hopes.

Here is the persistent Lexia fault screenshot
IMG_9059.JPG
Here is the Electric EGR valve repeat signal fault.
IMG_9040.JPG
Fault details permanent fault P2100
IMG_9041.JPG
Fault details P2111 permanent fault
IMG_9074.JPG
Fault details P0406 Permanent Fault
IMG_9060.JPG
Does anyone know where the Injection ECU is? There appears to be an ECU next to the BSI unit but it does not look like this.
IMG_9037.JPG
The one I have found next to the BSI has the same EDC16CP39 part no as on the screenshots.
IMG_9090.JPG

Does anyone have a wiring diagram?

I may have to buy this French manual that covers this model.
Revue technique.JPG
I would appreciate any help.

When removing and replacing the EGR valve I have lost one of the allen screw bolts that secures the EGR pipe to the EGR valve. It looks very tricky to replace right at the back of the engine. It does not stop the car running as I did the single remaining bolt up very tight and I don't think my EGR valve opens.

I did read on an Aussie Frogs thread dated 2014 that someone had the same faults on the anti pollution and speed control faults. But that thread went nowhere.

I would appreciate any help and now I have learnt how to place photos into the post I will update this thread.

This is a very willing engine and the car is worthy of saving.

Alex pipos
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Re: Citroen C5 2.2 HDI 2007 Mk 2 Biturbo

Post by Alex pipos » 13 Oct 2019, 08:32

Hello , I have the same problem on my 2008 c5 2.2 hdi , did you found what was the problem ?

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GiveMeABreak
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Re: Citroen C5 2.2 HDI 2007 Mk 2 Biturbo

Post by GiveMeABreak » 13 Oct 2019, 11:14

I missed this post originally, but if you can confirm your VIN and confirm what fault codes you are getting I will take a look for you.

The original poster has a MK II, but although the same engine, it was modified for the MK III (X7) so may have a different engine ECU and other subtle differences to the older version.

Also, the OP is getting a little confused with the BSI - which is in the cabin not the engine bay, so he probably means the engine fusebox (BSM) when he talks about the engine ECU location.

Alex pipos
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Re: Citroen C5 2.2 HDI 2007 Mk 2 Biturbo

Post by Alex pipos » 13 Oct 2019, 12:40

Hy , I have recently bought a citroen c5(x7) 2.2hdi biturbo from 2008 , the car isn't running well , I have P2111 , P0123 ,P2100 , P1351, P2111 errors , I have discovered that if disconect the throttle body , the car runs perfect until it enters limp mode

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Re: Citroen C5 2.2 HDI 2007 Mk 2 Biturbo

Post by GiveMeABreak » 13 Oct 2019, 13:01

As per your PM and my response, I've copied your message, and await the VIN.

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Re: Citroen C5 2.2 HDI 2007 Mk 2 Biturbo

Post by GiveMeABreak » 13 Oct 2019, 13:54

Here's the injection ECU. 1324 is the metering pump proportional electrovalve.

You can find the other codes here on our Wiki:

https://frenchcarforum.co.uk/wiki/Elect ... ring_Codes

Image

Alex pipos
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Re: Citroen C5 2.2 HDI 2007 Mk 2 Biturbo

Post by Alex pipos » 13 Oct 2019, 18:57

The problem was that I replaced the egr valve , afther that the car started runing badly , I had double checked everything , afther I had deleted the errors p2111 reapears... P2111 is an error from the throttle body so , I've replaced it with one from a car that works , but ...no results

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Re: Citroen C5 2.2 HDI 2007 Mk 2 Biturbo

Post by GiveMeABreak » 13 Oct 2019, 19:32

Did you reinitialise the auto adaptives? That needs doing after EGR valve replacement. It should be guided using Diagbox under one of the repair menus.

Alex pipos
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Re: Citroen C5 2.2 HDI 2007 Mk 2 Biturbo

Post by Alex pipos » 13 Oct 2019, 19:48

I will try that tomorrow , thank you very much for the support

Alex pipos
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Re: Citroen C5 2.2 HDI 2007 Mk 2 Biturbo

Post by Alex pipos » 19 Oct 2019, 15:45

Hey , I tried to reinitialise the egr valve , i did it , but no result ...a mechanic from Citroen told me afther a quick scan that the throttle body is brocken...