I need some input my ecu will not set ready on the following areas, catalyst, o2 sensor and EGR. It'll paas inspection with two not ready! Help, any input? The only code I have is pending p1491-egr lift. What is the process for getting the ecu to ready staus? Cant get inspection and cant get tag until I fix-THANKS

 

Clean the EGR valve and passages in the manifold (take the plate off of the top of the manifold, which requires removing the fuel rail with injectors first). Very common for it to just be clogged with carbon deposits.

 

Check this link out about EGR cleaning.
Fixing EGR blockage leading to DTCs P0401 and P1491