I have a C4 1.6HDI 2005, with approx 90k, the "anti pollution faulty" message beeps up when I start the engine and the engine management light comes on and stays on. Car performs well really good mpg, bt from what I have read ther could be numerous causes from holes in the exhaust, faulty egr valve, poor fuel, fuse boxes and failing battery to C4 Engine Common Ignition Problems, Erratic Idling etc. - Read before posting Typical faults that may occur can include: (Petrol Versions)Poor idling - Some causes of poor idling [more ] By Dave_Retired. On Wed Nov 16 2011, 11:25am. Anti pollution fault can mean many things get it diagnosed with a EML fault finder this fault turned out to be a camshaft solenoid there are 2 on this engine Hi Michael,I have a Citroen C2 and have a problem with the ABS light sensor flashing, the seat belt sensor flashing and the anti pollution sensor all flashing on the dash. The speedo some times turns off and back on again. Re: Anti pollution system fault c4 grand Picasso Unread post by posh » Wed May 08, 2019 6:14 am og kig lige en ekstra gang pom luftfilteret sidder korrekt, og er det rigtige, hvis du af en eller anden grund har fået begrænset lufttilførslen så får den for lidt luft, deer er ingen sjove stik til filteret There are two ways to prearm the system: Press the LOCK button on the transmitter. Open a door, press the power door lock button and close the door. After 30 seconds the system will be armed and the theft indicator in the cluster will flash every two seconds. Disarming an Untriggered System. done loads of pollution faults lately wozza and they were all down to the coolant temp sensor cracking. if this is the case with yours it would pay to have it checked as the coolant can work its way up the inside of the wires (pulmonary effect) to the ecu and cause a fire. The anti-pollution warning has not occurred since last Friday after I had arranged for a service on Monday at the local Citroen dealer. They cleared down the fault,again, and has been ok. I noted the details in "the garage" forum on this subject re. about water/moisture in the exhaust. If this is true then it seems to be a built in fault. This The Citroen C3 can experience an "anti pollution fault" warning due to various issues, such as a clogged catalytic converter, misfiring plugs, or a faulty particulate filter. Resetting the fault codes by disconnecting and reconnecting the battery may temporarily resolve the issue. sbKq.

citroen c4 anti pollution fault reset