C5 no sppedo, odometer, abs / esc

[hayabusa1300r]

Hi, hopefully I'm posting in the correct section, apologies if I aren't.

I have just become the owner of my brothers 2002 C5 2.2hdi 136hp estate. It has covered 112k miles, 57k of which was by my brother, and the last 15k around town.The car has had basic maintenance like annual oil services by non specialist garages. So the car has come with some faults, which have all developed in his last week of his ownership bar limp home mode, that's been on and off for ages:

speedometer not working
odometer not working
abs/esc warning
brake failure warning
tyre pressure sensor warning
it goes into limp home mode as soon as you show it a dual carriageway, but can normally be reset by switching on and off ( I have removed the fap and catalyser, separated the two and jet washed the fap through - it was solid with carbon, such it had blown one of the pipes connected to it off!, which I've repaired
its also saying low fluid Eolys thing pollution fault etc.

I took it today to have the codes read by a local long established Citroen specialist, who basically said there's loads coming up and he thought it was associated with ABS - as he could not communicate with it. He suggested I check fuses first, which I've done - I've pulled all both in glovebox and under bonnet just to verify none are blown, none were. I've also removed the fuse board under the bonnet and disconnected / reconnected the ABS wiring - which all seemed clean and dry. I put it all back together and took it for a 20 minute run, no change.

I don't really want to spend loads at a garage I've got no knowledge of, and end up spending hundreds, and other than this the car has had in the last couple of years a new clutch, cambelt, water pump, starter, and at Christmas a battery. It pulls very well around town and doesn't seem to go into LHM until say after 50.

Any ideas?

[Stickyfinger]

Hi and welcome.

A few "problems" there.

1st off, did the specialist do a BSI reset prior to reading the faults ? ......that clears all the "old" ones allowing you to see the problems which are presently effecting the car.
If he says "loads" of faults are seen, then why would he say he could not communicate with it ?.......I do not understand this aspect.

I would say this situation will require a number of "reads" to figure out and fix.
In the WIKI section there is a post showing a map of members who own a Lexia system, contact a local member to see if they can assist you with this....only then will you trace it unless you are lucky and a member has had the exact same combination of faults.

[Hell Razor5543]

Sticky has suggested you get it onto a Lexia, and to do a BSi reset. Here are the links on both;

http://www.frenchcarforum.co.uk/forum/v ... 11&t=40407
http://www.frenchcarforum.co.uk/forum/v ... 19&t=29178

By the way, although the BSi reset looks complicated, think of it as cleanly shutting down a computer, in order to ensure any and all glitches get cleared. The C series Citroens have a high level of electronics, and this can make them sensitive to electronic glitches. The BSi reset clears these, but it will not clear actual faults.

[hayabusa1300r]

Hi Guys

Thanks for the responses

The Citroen specialist used a Lexia, he said the car had a number of fault codes coming through, but that he couldn't communicate with the ABS - I believe he said he could not get the car to communicate with the ABS? I'm unsure whether he did a BSI reset, I'd have hoped so - apparently they have been going years and only work on Citroens, they even had an Citroen Maserati SM in! He said that as the speedo, tyre sensors, stability control etc. were linked with the ABS he recommended resolving the ABS issue as this may clear the others

I'll look and see if there's anyone local, I'm presently considering swapping the ABS block as a 1st stage attempt also

cheers

[GiveMeABreak]

Regarding your anti-pollution faults, have you ensured that there is sufficient Eolys in the tank? When these are topped up the car needs to know the quantity refilled using the Lexia. Either there is insufficient Eolys fluid to regenerate the filter or the filter is stil blocked, being likely causes.

Yes, there are many faults that can lead back to the ABS errors, so if the Lexia can't communicate with it, but can with everything else, it is possible that it needs replacing. Send through your VIN if you need replacement part numbers.

[hayabusa1300r]

Hi Marc

I'm certain the fap is clear, Ive not checked the Eolys as I intend gutting the fap, removing the EGR and doing the download ecu thing that tricks the cars brain into thinking they're still there. If there is no Eolys would it go into limp home?

cheers

[GiveMeABreak]

Very likely if the additive level is low or empty if it is trying to regenerate the filter. You do know removing the DPFS is checked for and an MOT failure now - apart from all the poison you'll be throwing out?
Aparently it is now an offence to drive a vehicle that has been modified this way, as it will no longer meet the emissions standards the car achieved when it was approved for sale in the UK.

Sorry to 'rain on your parade' but I'm guessing that could mean a mod that would also invalidate your insurance too - so best reconsider if I were you, but your choice

[wheeler]

You do know removing the DPFS is checked for and an MOT failure now

true, but how will the tester know the insides have gutted from the DPF ? It will still pass the smoke test (assuming no other reasons) without a DPF.

[hayabusa1300r]

Hi guys, I appreciate the soot particles wont be trapped, but the 3mpg improvement and also the fact that you are not burning Eolys off would I imagine balance the environmental debate. Me too, if the FAP / DPF is there all connected but mapped out I don't see how an Mot tester would know - they are not invasive tests? I'm just looking to get the old girl running right, I'm sure she's got many more years and miles left in her

cheers

[GiveMeABreak]

Hi guys, I appreciate the soot particles wont be trapped, but the 3mpg improvement and also the fact that you are not burning Eolys off would I imagine balance the environmental debate. Me too, if the FAP / DPF is there all connected but mapped out I don't see how an Mot tester would know - they are not invasive tests? I'm just looking to get the old girl running right, I'm sure she's got many more years and miles left in her
cheers

Actually, apart from the NOx gasses, the particualte matter which is carcinogenic itself can get caught in your lungs - especially of small children and cause all sorts of problems - which is why a functional DPF can almost eliminate these from getting into the atmosphere.

There is also likely to be newer tests introduced next year for the MOT - see my other post on this if you're interested:
http://www.frenchcarforum.co.uk/forum/v ... =3&t=55012

As you've already cleaned your filter, you're almost there anyway. You just need to check the Eolys and possibly the EGR may need a clean. Just get your ABS unit sorted, then clear the codes down and see what you're left with.

[hayabusa1300r]

Thanks Marc

The egr is my next step to try and restore power all the time, I've already serviced the car and changed oil and air filter, but tbh I was focusing on the abs / lack of speedo, been using my phone with an app on. it looks awkward to get at mind!

cheers

[GiveMeABreak]

Ok, if you want any diagrams or procedures that I might be able to dig up, send me a PM with your VIN and an email address I can send the PDFs to.

[hayabusa1300r]

An update on my previous:

I've repaired the boost pressure sensor on the air intake, the stub was broken. At the same time i cleaned the MAF with carb cleaner and replaced 2 small sections of vacuum pipework - car no longer loses power or goes into limp home mode. It is however reluctant to go past 3k revs, and if you push it says "diesel filter blocked" - i'm assuming its still got a lot of soot in the engine which is gradually being pushed through - I did a 300 mile round trip to London, slow on way down , fast on way home (roads clear) and the car seems much more lively, and only had "diesel filter blocked " message once when i joined the M1 coming home and gave it some welly - once I settled to a brisk cruise it didnt show again. I'm thinking I will have to remove the DPF / FAP again to check its still clear though. Then the internal door handle broke, but this seems quite common, I've ordered a new one of Ebay. With reference the non working speedo and odo, I've obtained a 2nd hand unit (same numbers) to change as everything is pointing to ABS failure - I was going to change this myself and have a pressure bleeding kit, but I am concerned about references to getting air blockages in the block, and needing a Lexia to purge same - has anyone done this - i dont want to end up with non functioning brakes on a weekend.

cheers John

[hayabusa1300r]

ps it was pulling badly to the left, 4 wheel alignment checked all ok. I swapped rear to front wheels, so have matched set on front axle - some improvement but still seems to favour pulling to the left even when little or no camber