20th Mar 2008, 03:31

RE: immobilizer fault:

I disconnected the battery and held the two ends together for about 2 minutes. I reconnected battery and the engine started; no problems. The only thing wrong now is that the warning light is still on, and I am unsure of what action to take.

Has anyone any ideas on how to sort this problem out?


26th Apr 2008, 04:50

Hi. I have an HPI Exclusive SE 2002 2.0 and have suffered with some of the anti-pollution type problems. I am convinced that this car is very sensitive to the fuel mixture and now avoid filling up at supermarkets.

Also had an exhaust problem in the past, and was quoted 1300 pounds to replace as it is all one unit. In the end I paid a custom exhaust place around 50 pounds to weld a new piece of pipe in place.

2nd Jun 2008, 10:59

I have a 2002 C5 exclusive HPi. Yes, the anti-pollution warning comes and goes. I'll certainly avoid using Tesco (a supermarket) fuel & see if that helps. Last year the thing just lost power (as if it had run out of fuel) and would then run for ever reducing lengths of time (ever broken down in Limehouse Link?). After MONTHS of effort by those who know they replaced the high pressure fuel pump. All was well for almost a year when, yes, the same thing happened - so it probably wasn't the pump (goodbye nearly a Grand!). I'm now thinking coil-pack which has been modified by Citroen. Back order, looks like taking about a month to get one.

Anyone had a similar problem? Evidently the HPi engine is rare (I wonder why!).

7th Jul 2008, 18:37

I've had my C5 for nearly 18 months now, a 2.0 HDi 90 - and have had a few niggles:

1. Electric windows had a mind of their own once,

2. Driver's door doesn't lock with the remote (all others fine),

3. A pain in the bum to change headlight bulbs,

4. Peeling lacquer on the front bumper.

I think with this in mind I have nothing to complain about. I bought the car with 59k on the clock, and it now has 82k. Nothing wrong with the car at all - would happily have another one, maybe the 110 hp for a bit more kick (although the 90 hp is perfectly adequate for me)

It has regularly made UK-length trips, and my commute to work is 17 miles (having to haul up long hills, which is a dream in this, and a bit of dual carriageway). Possibly, with doing such a route most days I am cleaning the anti-pollution filter out by having to welly the engine up a 1 in 6 hill (dual carriageway) from a near stand still. I hope so, not looking forward to the probability of a replacement!

All in all - an excellent, efficient and comfortable car!!

25th Jul 2008, 14:46

C5 HDI Rear door won't open at all. Handles seem disconnected from anything inside. Any ideas?

27th Jul 2008, 09:39

Hi, I noticed a few of you C5 owners have mentioned the Anti Pollution Light coming on. Well I had a brand new 08 C2 1.6i 16v VTR SensoDrive in April, and about 3 weeks ago I put petrol in, filled it to the top like I always do, and I pulled away, dropped my Mam off at Asda, then I started the car. It wouldn't start 1st time, so I started it again and it did start, but then Anti Pollution Light and Message came on. So I parked up, knocked the engine off, and then restarted it, and it still came on. So I left the car for half hour and went into Asda. When I came back to the car, it had gone off. So I went to Citroen anyway, and they were sure the cause was moisture in the petrol. It hasn't happened since.

28th Aug 2008, 06:34

I have just got a C5 2.0 HPI, and now the problems are starting with a misfire or stutter happening occasionally. The dealer is offering no help, as all they will say is bring it in next week, give us £70 plus VAT, and we will see what is wrong with it. I am not interested in paying £70 for an idiot to plug in a laptop for 5 minutes, and then tell me he still does not know what is wrong.

28th Aug 2008, 10:57

Hi, my dad has a Citroen C5 2003 HDI, and that anti pollution fault light keeps turning on. Last year when we had a similar problem, my dad took our car to the Citroen dealer, and I think they swapped the exhaust for a new one, and they also topped up the diesel thing; I don't really know how you call this thing. Everything was fine, till about a month ago when we now have the similar problem, need help?? Anyone.

1st Sep 2008, 09:43

Also have a C5 HPi Exclsive - 03 plate. Have had it for 3 years now. Very comfortable and only fault is that it could be more fuel efficient.

However, anti-pollution fault now on - and it does stutter a bit at low revs. I generally use supermarket fuel - but may try other fuel to see if problem disappears. Anyone had success with a fuel additive?


8th Oct 2008, 07:08

I think every C5 has issues with the anti pollution fault and from what I can gather the main cure is a new HP fuel pump. The cost of this from citroen is £640 an absolute rip off. I currently have an issue with the car cutting out and stopping completely when this fault is displayed. I would like to know who has had a fuel pump replaced and how much they paid. I am being told that the fuel pump has its own ecu which has to be programmed to the car and only citroen can so this?

17th Oct 2008, 10:51

I bought a 2002 Citroen C5 HPi with only 25000 miles on the clock at first it was fine and I was happy, but then the great Citroen electronic bug bit me, Anti Pollution Fault came on. Took the car to a garage had it serviced and a new fuel regulator and sensor fitted. Car still runs in limp mode the fault code is 1288 and it is giving a fuel pressure of 7 bar. I have had the EG something valve cleaned still sick. After over a 100,000 miles in a BX this so called upgrade is a dog. Any ideas (HELP) please.

18th Oct 2008, 13:26

My Citroen C5 HPI Exclusive is also a 2001 model, bought two years ago with 25,000 on the clock. I've put another 25,00 on it since.

EGR valve has failed once and been replaced; now the EGR valve has failed again, along with fuel pressure sensor, and lambda valve!. Estimated cost; Citroen garage repair - £900.00.

I like the car - good for my work and comfortable. My question is this.

Does anyone know how to bypass these sensors, which obviously don't work very well? After all, the engine is solid, and really, young at 50,000.

21st Dec 2008, 09:05

Hi all... Very interesting site this is!

I have a 2.2 HDi (Y-reg) and it's been perfect up until a few months back.

I've since had nearly ALL the issues listed on this site.

After having tyres replaced on the front... the garage said they couldn't balance them because they don't have the equipment! Durrr! Anyway... bit of wheel shudder at 70+ No probs... The window thing... starts raining... front passenger window opens half way... Now THAT IS a pain on the motorway!

The issue of the windows going up when it rains.. (That's normal. The rain sensor tells the windows to go up when rain hits them... but I agree with our friends previous comment about having your arm out at the time... especially if you're driving behind someone in the summer and they use their screen washer and you get over-spray!)

The Anti-pollutant message and loss of power issue has been happening for ages... My local Citroen expert..? Topped up the diesel additive... made no difference! WHY DO WE HAVE TO PAY THESE PEOPLE TO GET IT WRONG!!!?? If it was me (A plumber...) Trading standards would be on my arse over it!!

Someone needs to look at this from Citroen UK... Get it sorted!

And the immobiliser fault raised its ugly head over the week-end... and yes... you guessed it folks... Just after the Mrs had loaded the car with over £100 worth of frozen food from Tescos!!! I've a mind to take it to a field and torch the bloody thing... if I wasn't so afraid of being caught!! And even then... it'd probably break down on the way there!!

You've gotta laugh haven't you!

When I find a cure for all this, I'll post it on here... but to be fair... it'll have to wait until I've sorted world hunger and war in the far east!