I'd say wait. Wait to see if the codes return. The ccv thing can screw up lots of stuff temporarily. Run a bit of fuel through the system and get things heated up enough to burn the gunk off your O2 sensors so they aren't messing with your maf readings. Then see if things settle down....?

Thanks - that's what I'm hoping. I went out to eat last night and purposefully went the long way there and back. SES light still hasn't returned.

Q - Is there a way to read all of the errors, or do I have to go through and do this for each (module?) in the script selection screen one by one? I got the errors yesterday from Engine -> MS 43.0 for M54.

https://i.imgsafe.org/23ff6bfc76.png

I ran one other for Chassis -> Steering angle sensor and found one error there:

https://i.imgsafe.org/24162a85e0.png