My Check Engine light has been on for some time. I read it out with the scanner and it says “EGR #1 Error” or perhaps #2 or #3. I took the EGR valve off and it may be OK or it may be bad. I replaced it a year ago but that did not fix the EGR indication. I cleaned out the port underneath where the exhaust would go to the manifold. I put it all back together and it seemed to be OK. But the light comes on again after not too long. I guess I will have to keep messing with it.