I had a headlight burn out on the Rodeo the other day so yesterday I stopped by AutoZone to pick up a new light and while I was there I had them do a check engine light test to see what was up with that. The check engine light being on is the biggest obstacle at the moment to getting the vehicle inspected and I may be in luck on this one because the error code indicates that the problem is restricted flow in the EGR system. I might be able to fix that by just cleaning the EGR valve and manifold passage so, weather permitting, that's what I'll be doing this weekend. Keep your fingers crossed because a new valve is about $150 and I'd much rather fix it for the cost of a can of O2 sensor safe carburetor cleaner, a skinned knuckle or two and some cussing. Because based on my experience of replacing something as simple as a headlight, I can guarantee there will be at least one skinned knuckle and a lot of cussing.