C5 Mk2 2.0 HDi fuel tank gives pollution error fixed

This is the Forum for all your Citroen Technical Questions, Problems or Advice.

Moderator: RichardW

User avatar
GiveMeABreak
Forum Admin Team
Posts: 8884
Joined: 15 Sep 2015, 19:38
Location: West Wales
My Cars: '09 C5 X7 2.0 HDi Exclusive Mativoire Beige (The Golden Hornet)
'07 C3 1.6 HDi Exclusive Aluminium Grey (The Silver Hornet)
Past:
'76 GS 1000 Cedreat Yellow (yuk)
'79 GS 1220 Geranium Red
'78 CX 2.4 Turbo Prestige C-Matic Nevada Beige
'84 CX 20 Polar White
'90 XM 2.0 SX Polar White
'93 XM 2.0 Turbo Prestige Polar White
'94 XM 2.0 Turbo Prestige Emerald Green Pearlescent
'98 C15 Romahome White
'99 Xantia 2.0 HDi SX Hermes Red
'01 C5 2.0 HDi SX Wicked Red
'05 C5 2.0 HDi Exclusive Obsidian Black
x 671

Re: C5 Mk2 2.0 HDi fuel tank gives pollution error

Post by GiveMeABreak » 11 Jun 2018, 08:18

That’s the EGR control Vacuum Pipe. I was looking at the overall system. It is also possible with that fault code that the turbo vanes are sticking and not in the correct position. That can be due to spot build up. The turbo boost sensor may also be faulty, but until it is determined and resolved the engine will remain in backup mode with reduced power.

Try the easiest things first like Mike has suggested with the pipe filter. It may be possible to get some live data from Lexia too. I’m out this morning but will try and get some more info / diagram later.

Was it the same mechanic who ran the Lexia diagnostic?
0
Marc

Online
User avatar
xantia_v6
Forum Admin Team
Posts: 5294
Joined: 09 Nov 2005, 23:03
Location: Beaune, France
My Cars: -
1997 Citroen Xantia V6 (France)
1999 Citroen XM V6 ES9 (France)
2011 Peugeot 308 CC THP 155 (NZ)
1975 Jaguar XJ-S pre-HE (NZ)
x 181

Re: C5 Mk2 2.0 HDi fuel tank gives pollution error

Post by xantia_v6 » 11 Jun 2018, 08:55

GiveMeABreak wrote:
11 Jun 2018, 08:18
That’s the EGR control Vacuum Pipe. I was looking at the overall system.

I think that it is mis-named in the parts listing, as both the solenoids are described as turbo control, but all of the hoses are labelled EGR (which can't be correct).
0

masood_ilyas
Posts: 116
Joined: 01 May 2001, 00:01
Location: United Kingdom
My Cars:

Re: C5 Mk2 2.0 HDi fuel tank gives pollution error

Post by masood_ilyas » 11 Jun 2018, 10:13

Thank you all.
No I ran the Lexia.
I used to work on my own Xantias until my back and joints started complaining about the abuse they were getting so entrusted this chap who had been reasonable so far with general oil and filter jobs but perhaps this time did not fancy the challenge or would rather do quick jobs to keep the cash flowing in.

A quick look at the front shows thin vacuum pipes going into three way plastic adapter as sound, no leakage here.
I have not been able to examine the turbo end looks like it will require removing engine mountings to rock it towards the radiator for a peek.
Is it worth paying for the book of lies from Halfrauds?
0

masood_ilyas
Posts: 116
Joined: 01 May 2001, 00:01
Location: United Kingdom
My Cars:

Re: C5 Mk2 HDi fuel tank gives pollution error Resolved now monitoring

Post by masood_ilyas » 12 Jun 2018, 13:45

Thank you for your valuable advice, fingers crossed the fault has now been resolved.
First of all the MAF was cleaned with an isopropyl alcohol pad used for disinfecting the skin, the sort used just before giving you a jab. It works, dries quickly and does not leave any residues behind. No more P0102 errors.
The turbo boost solenoid just under the fuel filter, it was advised on the tube as a possible culprit so it and the another solenoid underneath it were taken out and their filters were cleaned and reinstalled. To my surprised that removed the fault 2563 as well. :)
Logs were cleared, the car was taken on a run up a steep hill, power returns no more pollution faults for now :-D :-D
D905F980-2366-4B65-B13E-3D9CB12BA0DD.jpeg
Unfortunately my attempts to add an image showing the location of these solenoids have failed, I thought this was shared at , but it failed when I tried to preview this post.

Thanks to every one for their help once again.

Masood
You do not have the required permissions to view the files attached to this post.
Last edited by GiveMeABreak on 12 Jun 2018, 14:33, edited 1 time in total.
Reason: Fixed Image
0

Gibbo2286
Posts: 2722
Joined: 08 Jun 2011, 18:04
Location: GL15***
My Cars: 2006 C5 2.0 Litre HDI VTR Automatic Estate.
x 263

Re: C5 Mk2 2.0 HDi fuel tank gives pollution error fixed

Post by Gibbo2286 » 12 Jun 2018, 14:16

Your linked image is showing ok for me.
0

masood_ilyas
Posts: 116
Joined: 01 May 2001, 00:01
Location: United Kingdom
My Cars:

Re: C5 Mk2 2.0 HDi fuel tank gives pollution error fixed

Post by masood_ilyas » 12 Jun 2018, 14:32

Good to see Gibbo that you can see it via the web link shown.
I was attempting to code it using [IMG] switches so that picture appeared as part of my reply without having to go to another website. I must read up on this, I am sure there something there in the super stickies to educate me.

Kind regards
0

User avatar
GiveMeABreak
Forum Admin Team
Posts: 8884
Joined: 15 Sep 2015, 19:38
Location: West Wales
My Cars: '09 C5 X7 2.0 HDi Exclusive Mativoire Beige (The Golden Hornet)
'07 C3 1.6 HDi Exclusive Aluminium Grey (The Silver Hornet)
Past:
'76 GS 1000 Cedreat Yellow (yuk)
'79 GS 1220 Geranium Red
'78 CX 2.4 Turbo Prestige C-Matic Nevada Beige
'84 CX 20 Polar White
'90 XM 2.0 SX Polar White
'93 XM 2.0 Turbo Prestige Polar White
'94 XM 2.0 Turbo Prestige Emerald Green Pearlescent
'98 C15 Romahome White
'99 Xantia 2.0 HDi SX Hermes Red
'01 C5 2.0 HDi SX Wicked Red
'05 C5 2.0 HDi Exclusive Obsidian Black
x 671

Re: C5 Mk2 2.0 HDi fuel tank gives pollution error fixed

Post by GiveMeABreak » 12 Jun 2018, 14:34

I’ve uploaded your image to the Forum, which preserves it, in case of another Photobucket fiasco.
0
Marc

masood_ilyas
Posts: 116
Joined: 01 May 2001, 00:01
Location: United Kingdom
My Cars:

Re: C5 Mk2 2.0 HDi fuel tank gives pollution error fixed

Post by masood_ilyas » 12 Jun 2018, 14:36

Thanks Marc

Masood
0

User avatar
GiveMeABreak
Forum Admin Team
Posts: 8884
Joined: 15 Sep 2015, 19:38
Location: West Wales
My Cars: '09 C5 X7 2.0 HDi Exclusive Mativoire Beige (The Golden Hornet)
'07 C3 1.6 HDi Exclusive Aluminium Grey (The Silver Hornet)
Past:
'76 GS 1000 Cedreat Yellow (yuk)
'79 GS 1220 Geranium Red
'78 CX 2.4 Turbo Prestige C-Matic Nevada Beige
'84 CX 20 Polar White
'90 XM 2.0 SX Polar White
'93 XM 2.0 Turbo Prestige Polar White
'94 XM 2.0 Turbo Prestige Emerald Green Pearlescent
'98 C15 Romahome White
'99 Xantia 2.0 HDi SX Hermes Red
'01 C5 2.0 HDi SX Wicked Red
'05 C5 2.0 HDi Exclusive Obsidian Black
x 671

Re: C5 Mk2 2.0 HDi fuel tank gives pollution error fixed

Post by GiveMeABreak » 12 Jun 2018, 14:38

Excellent result, so a combination of both suggestions seems to have resolved it. Thanks for updating the post, so others can benefit. 👍
0
Marc

masood_ilyas
Posts: 116
Joined: 01 May 2001, 00:01
Location: United Kingdom
My Cars:

C5 mk2 2.0 HDi pollution error 2653 returns

Post by masood_ilyas » Yesterday, 00:11

This refers to a 2006 Mk2 C5 with 80000 on the clock which was posted last week as viewtopic.php?f=3&t=60356 and I thought the fault was resolved, alas no,
Image
the fault 2653 strikes back.!

Now it is exhibiting unusual power loss at low revs. When driven hard it does pull then holds back by throwing Pollution fault error and goes into limp home mode. When the fault is cleared it exhibits strange hunting type effect where the revs oscillate between 1800- 2100 rpm with road speed going up and down in sync.

I have looked at the simple things first and the vacuum circuit to the naked eye looks ok, the tube are in reasonably good shape, the black protective sleeves are intact too yet it does have all the feel of leaking vacuum resulting in loss of turbo as these pictures show the areas examined.
Image
inlet manifold area
Image
Is it EGR control or Turbo waste gate control valve air capsule
Image
Y/T-piece for splitting vacuum feeds.


Is it fuel starvation in which it could be the fuel pump but Lexia does not complain,
this image
Image
shows 100 percent correction being applied!

At this stage it is only guess work could be EGR blocked or Turbo filled with soot both requiring clear evidence and a deep resolve before diving in. The Citroen website shows this
Image
which I am sure is incorrect as it calls the Electro valve going to Turbo as an EGR control valve!

Has any one gone through the EGR Turbo removal and cleaning process, any guidance on pitfalls to avoid will be most appreciated. Looking at secondhand prices would it advisable to go for an exchange turbo.

Dear admin I am still unable to paste pictures even though tried to follow the instructions in the super stickies.
If you think it worth while would you be kind enough to upload them on board please.

Thanks

Kind regards

Masood
Last edited by GiveMeABreak on 17 Jun 2018, 08:56, edited 2 times in total.
Reason: Threads merged
0

User avatar
GiveMeABreak
Forum Admin Team
Posts: 8884
Joined: 15 Sep 2015, 19:38
Location: West Wales
My Cars: '09 C5 X7 2.0 HDi Exclusive Mativoire Beige (The Golden Hornet)
'07 C3 1.6 HDi Exclusive Aluminium Grey (The Silver Hornet)
Past:
'76 GS 1000 Cedreat Yellow (yuk)
'79 GS 1220 Geranium Red
'78 CX 2.4 Turbo Prestige C-Matic Nevada Beige
'84 CX 20 Polar White
'90 XM 2.0 SX Polar White
'93 XM 2.0 Turbo Prestige Polar White
'94 XM 2.0 Turbo Prestige Emerald Green Pearlescent
'98 C15 Romahome White
'99 Xantia 2.0 HDi SX Hermes Red
'01 C5 2.0 HDi SX Wicked Red
'05 C5 2.0 HDi Exclusive Obsidian Black
x 671

Re: C5 Mk2 2.0 HDi fuel tank gives pollution error fixed

Post by GiveMeABreak » Yesterday, 09:53

So the vanes are not returning to the right position, which can indicate that they are stuck with soot or the boost sensor / electrical connection is faulty. That will be contributing to your lack of power at low revs, acceleration and is why the car is going into limp home mode.

If you have checked the hoses and pipes for an air leak / air circuit then checking the turbo to see if the vanes are sticking is a next step.

Also, it might help if you can take some pictures from further back, as well as the close ups - as it is often hard to see the orientation / angle and identify all the parts from our point of view when in too close, especially when looking at hoses and valves as often they are identical but go to different components.
0
Marc

masood_ilyas
Posts: 116
Joined: 01 May 2001, 00:01
Location: United Kingdom
My Cars:

Re: C5 Mk2 2.0 HDi fuel tank gives pollution error fixed

Post by masood_ilyas » Yesterday, 14:16

Thanks Marc, point taken about the photos.
It is time to look at the Turbo then. I will come back with an update when I get a chance to take it out.
On the Xantia it was simpler, couple of air pipes and oil feeds to disconnect and there you had it.
By the way would purchase of gasket or repair kit be advisable which may be needed during reinstall to prevent leakages.

Thanks for adding the photos, I noticed you have merged the two posts , was it because it was an ongoing fault.
One of the Lexia photo was for the fuel injection status showing over 100% error correction being applied at 1500 rpm.
Could any one explain the logic, if it was over 100 pc correction that would suggest it was not working at all!.

Thanks
Masood
0