Anti Pollution Warning Light

[greenhills]

Hi again folks,

 

I have an orange anti-pollution warning light lit up on my 2005 1.1 C3 Desire (Petrol).

 

Manual says to contact dealer, but would appreciate any insight as to what this means is potentially faulty.

 

Thanks

[Guest qman3428]

It means the sensors have detected a fault, which sensor and which fault can only be determined with a diagnostic computer, hence contact the dealer. After a while you get immune to these and just wait to see if it goes away!

You could try checking simple things like filters as a blocked air filter is enough.

[paul.h]

Is the warning light the engine symbol and is the car running normally ? Did it first appear after you sprayed the WD40 everywhere, if so I would wipe off any excess from any of the sensors/their wiring/their connectors before doing anything else. Then if it does not go after switching the ignition on/off a number of times you will need to use a fault code reader to see what is wrong. Only time I have had this warning was when a fuel injector failed and it was only running on 3 cylinders (1.4 petrol sx 2003)

[Guest Justin1]

Hi there, new to site, have been a peugeot citroen master technician for 18 years, without knowing the fault code a very common cause of orange management light on these is.

Exhaust gas leak, common on cheap Citroen exhausts. The smallest of exhaust leaks after oxygen sensor ( 2 on front pipe) will be detected by the engine ecu, this causes to over compensate with fuel. Run too rich.

Just done one. Half centimetre hole in centre box. Once repaired may require lexia or snap on scanner to reset ecu ( turn out light)

[greenhills]

Hi All,

 

thanks for the replies, apologies for late reply - computer crashed over weekend.

 

The light has gone out now and remains off, not sure why.

 

One thing I did notice was that the coolant level was down.

 

On the top of the coolant container there appears to be some sort of overflow pipe - is this what you would epxect. On first look, I thought it should be connected to something, but can't see any loose tubes/hoses.

 

Thanks again

[paul.h]

The top pipe stub on the expansion tank does not go anywhere. Keep an eye on the coolant level, ours has not gone down and it is nearly 8 years old so a look for a leak is worth doing. Also have a listen for a gushing sound which somebody had on this site and it turned out to be a head gasket failure. The original coolant is a type that does not need replacing, could be one of those organic acid types (OAT), so if you do top the level up use the same type.

[Guest Chris Lee]

I have the same problem. How much do Citroen charge to run the diagnostic check