Contour Enthusiasts Group Archives

Bob, do you live in a dusty climate? One silly thing that causes P0402 EGR Stuck Open codes is the the little sponge filter on the EGR solenoid gets clogged up. When this happens, solenoid holds a vacuum even when none is called for. So you get EGR flow when none is called for. Carefully (use a pocket knife) pull the cap off the EGR solenoid and clean the sponge filter inside. You may break a couple of the tabs on the solenoid cap, but that's okay. It will still hold.