I have a '99 CRV 4cyl. AWD automatic. I changed the oil pan gasket and had to remove a couple of bolts from the exhaust to manifold (front of the engine). I let the forward portion of the exhaust hang on the spring-bolts/clamp on the front of the catalytic converter so that I could remove the oil pan. Following assembly, the engine light was on, idle is now at a lower RPM than before, but no other noticeable changes. Is there a way to re-set the check engine light?