2005 Peugeot 307 antipollution fault light

It`s a guess but it could be the pollon/cabin filter is blocked, causing the problem you mention. A cheap and easy fix if it is that. Hopefully some else on here can confirm.

A pollen / cabin filter would not cause this .It could be one of a dozen or more things that has triggered light . You need to get a diagnostic scan carried out to find fault otherwise just guessing .

Thanks Whittingehame, its a good job I said It was a guess !

No problem " jota1978 " A blocked pollen filter would cause the likes of restricted air flow from heater fan etc .but not this fault or trigger light .So many possibilities , impossible to say without scanning .Otherwise you could be doing work , fitting parts not needed .Hopefully something minor .

Could be just a faulty sensor which is meant to operate a flap to stop polluted air entering the cabin.

The "anti pollution" fault comes up when there is a problem on the engine management system.it could be a number of problems so a diagnostic read is your best course of action.

Can I assume your car is a deisel? The anti pollution is a exhaust cleaning system fitted by peugeot. Have you by any chance also had a "deisel additive low" warning at any point?