You can try and clean it I haven't had much luck cleaning them every time I have tried to clean one the light always came back on eventually. You would turn it over push down the pintle and put some carbon cleaner in the hole let it soak in there at least an hour then spin the pintle slow wire a torx bit then spray it out with brake cleaner. Also make sure the egr port isn't clogged. But I recommend you just replace the egr valve. If you shop around there not too expensive.
Thursday, January 6th, 2011 AT 2:14 AM