Thanks mb doc.

When I picked up the car it was not in limp home
mode, just had an occasional stumble at idle.
The check engine light was on and the display reads
"check engine electronics." The dealer advises it
is not a problem to drive it 150 miles to
Sacramento because it is likely something so simple
as a leaking gas cap.

Sounds like its time to buy an OBD2 scantool now
that they are more reasonably priced.

Darrell