Antipollution Fault C5 2.0l 2002

[Guest gzr]

My C5 shows a 'antipollution fault' message with the 'engine' and 'service' fault lights illuminated.The engine continues to run normally with no apparent faults at this time.Is it OK to continue to operate the car in this condition?Thanks.

[pilgrim]

My C5 shows a 'antipollution fault' message with the 'engine' and 'service' fault lights illuminated.The engine continues to run normally with no apparent faults at this time.Is it OK to continue to operate the car in this condition?Thanks.

Hello there, I've had the same fault on my C5 since last December and the car is running perfectly and has done since I bought it last August. It is smooth, good acceleration and 30 mpg in urban road conditions. So it does appear that the fault showing doesn't necessarily mean that there is anything wrong with the car. It may be a faulty sensor. I've had the fault appear twice before and paid £40 both times to have it checked and the fault removed. Neither time did 2 different garages know why the fault was there. So this time I left it and there has been no problem with car. Don't know whether that will cause MOT failure. Can anyone advise on that?

 

Ray.

[paul.h]

Welcome to the forum. Questions for both of you, what year car and engine type - petrol/diesel and size. should help us give some replies.

[pilgrim]

Welcome to the forum. Questions for both of you, what year car and engine type - petrol/diesel and size. should help us give some replies.

Hello again, sorry about that I should have given details of my car:- It's a 2001 petrol 2.0i 50,000 on the clock. Ray.

[Randombloke]

Hello again, sorry about that I should have given details of my car:- It's a 2001 petrol 2.0i 50,000 on the clock. Ray.

 

Are you sure the lambda sensor has not been affected by Tesco/Morrisons duff fuel episode?

 

Personally I would find a garage that are prepared to look at the OBD (On Board Diagnostics) for a sensible sum of money. The error code will tell what the car thinks is wrong.

[pilgrim]

Are you sure the lambda sensor has not been affected by Tesco/Morrisons duff fuel episode?

 

Personally I would find a garage that are prepared to look at the OBD (On Board Diagnostics) for a sensible sum of money. The error code will tell what the car thinks is wrong.

2 different garages charged the same sum so I am assuming that it is a standard charge for any garage which has that type of equipment. The first garage said that the fault was caused by"an ageing cat". I asked Kwikfit about that and they said a cat either worked or it didn't and they had never heard that expression. The second garage hadn't any idea why the fault was showing after they tried to diagnose it and they told me that they would have to have the car in and "strip it down" to locate the fault. That sounded expensive so I got them to remove the fault and it stayed away for 3 months before re-appearing in December and has been there ever since. If anyone knows a garage in the Tyneside area that can diagnose the fault for a reasonable fee (ie a bit less than £40) then please let me know. Ray.

[shallishanti?]

Were these Citroen dealers/specialists?

[pilgrim]

Were these Citroen dealers/specialists?

The garage that diagnosed "ageing cat" is a Citroen specialist. The other garage is a place I've used before but are only a standard repair place. Another website for C5s ( a Yahoo site) regularly has messages from members who use Citroen dealers and have gained no satisfaction from them in attempting to deal with the anti pollution fault. Apparently they pay a small fortune for replacement parts such as coils, plugs etc and the fault shows again before they've even got the car home. They return and the dealers are baffled and they spend even more money trying to resolve it. All this at dealer prices. I repeat that my car runs perfectly and if I can get it through an MOT with the anti pollution fault showing then I will do so. I cannot see any point in paying any garage a small fortune in diagnostic costs and what they deem to be necessary repairs if they do not solve the problem and this seems to be the case all too often. I have arrived at the conclusion that the fault showing is the fault and that nobody seems very sure how to get rid of it ie there may not be a fault to get rid of (hope that makes sense) . It has nothing to do with any petrol sold by Tesco or Morrisons, I've never used supermarket petrol and never will. In my area the best and cheapest petrol is Shell which is frequently 1p a litre cheaper than supermarkets.

 

Ray.

[Randombloke]

The garage that diagnosed "ageing cat" is a Citroen specialist.

 

Can you post the exact error code here? It may help other people trying to solve the same fault or may get a response from a Citroen tech.

[pilgrim]

Can you post the exact error code here? It may help other people trying to solve the same fault or may get a response from a Citroen tech.

Sorry I have no idea what the error code is. At the time I got the faults checked and cleared I was un aware of anything to do with error codes. I've learned since then but at the time I had no idea. Ray

[Tonc]

Sorry I have no idea what the error code is. At the time I got the faults checked and cleared I was un aware of anything to do with error codes. I've learned since then but at the time I had no idea. Ray

 

Just been reading about your problem. Had the same about 2 months ago. My C5 started running very rough and gave Catalytic Converter Fault. I stopped switched off and restarted and every thing seemed OK, but a short distance down the road I got an Anti-pollution Fault displayed. Forum advice suggested I get it diagnosed, which I did and fault disappeared. Prior to this had a flat battery, which showed up on the diagnostic report and the Citroen Specialist said this could have caused the error. I have also been told that the Lambda sensor could be on its way. Life is about 50K miles from what I understand. My C5 still OK (I didn’t say that!) having done 120K Kms. Mine is also 2L Pet. 2001 Mod. Fortunately didn’t pay anything for diagnosis and could recommend my Citroen Specialist but he a bit far away in Cape Town. Good luck. ;)

[bish55]

My C5 shows a 'antipollution fault' message with the 'engine' and 'service' fault lights illuminated.The engine continues to run normally with no apparent faults at this time.Is it OK to continue to operate the car in this condition?Thanks.

 

Hi,

I also have the same fault with my 2l C5 petrol. When I accelerate hard it sometimes cuts out. I start the car back up and the anti pollution fault comes up with the engine and service faults. The car still runs fine though.

To clear the faults all i do is turn the ignition on and off 5 or 6 times, lock and unlock the car, and every thing is back to normal, no fault warnings.

The Citroen dealers have no idea what this problem is, but I think I might replace the lambada sensors and see what happens.

Regards

Chris

[72dudes]

My 2001 2.2 HDi also has this problem intermittently. Only happens on a long journey and normally when accelerating in 5th gear (like a hill or after slowing down for a wagon etc).

 

It's been diagnosed as a faulty "vac solenoid" £27.74 plus VAT - but 2 hours Labour which is the killer.

 

To date I've not had it done, but it'll have to be done soon.

 

Each time it happens the ESP warning light comes on first and this cuts the power available. I have to stop, switch off, wait a few minutes, start again, power restored, but "Anti Pollution Fault" warning, "Service" and Engine Fault" lights stay on for 5 or 6 starts. I'll try Bish's method of doing this all at once next time. Inconvenient on a long run, but I think it's a case of the computer giving us early warnings!

[Guest the builder]

My 2001 2.2 HDi also has this problem intermittently. Only happens on a long journey and normally when accelerating in 5th gear (like a hill or after slowing down for a wagon etc).

 

It's been diagnosed as a faulty "vac solenoid" £27.74 plus VAT - but 2 hours Labour which is the killer.

 

To date I've not had it done, but it'll have to be done soon.

 

Each time it happens the ESP warning light comes on first and this cuts the power available. I have to stop, switch off, wait a few minutes, start again, power restored, but "Anti Pollution Fault" warning, "Service" and Engine Fault" lights stay on for 5 or 6 starts. I'll try Bish's method of doing this all at once next time. Inconvenient on a long run, but I think it's a case of the computer giving us early warnings!

 

My problem mirror's your's exactly, I have a 2002 c5 hdi but Citreon found nothing wrong.

They reset the fault's but they came back almost immedietly. The killer is when you are overtaking and the esp comes on and you lose power.

I think i'll wait and see if anyone come's up with an answer.

[Guest ralf]

My problem mirror's your's exactly, I have a 2002 c5 hdi but Citreon found nothing wrong.

They reset the fault's but they came back almost immedietly. The killer is when you are overtaking and the esp comes on and you lose power.

I think i'll wait and see if anyone come's up with an answer.

 

 

Likewise me too. 2.0 HDi 2003. Citroen have no idea what it is. Damn dangerous when it suddenly goes into rev-limit mode when you are not expecting it.

 

I wondered if it was the lambda sensor, and wanted to replace it to see what happened, but the local garage says there is not one on the C5 diesels. Is this correct??

 

 

Ralf