The transmission warning arrow started blinking as I pulled into the parking lot this morning. I read that it is most likely the PNP switch, but I can shift out of park fine. The CEL also came on. It went into limp mode and I didn't have my scanner with me ( I should just put it in the trunk as much as I have needed it lately), so I pulled the diagnostics fuse which stopped the blinking, but the CEL stayed on. I scanned it when I got home and it showed no codes even with the light on. I went through the clear codes routine anyway and the CEL went off. Could it possibly be the gear selector microswitch? If so how hard is it to replace? I love this car, but it is driving me nuts lately. As soon as I get one light to go off, another one comes on. I guess that is what you have to expect at 238k. I did the shifting thing (d-->l) a couple of times, and drove 40 miles home with no arrows. The scanner is in the car now because you know it will come on again tomorrow!

 

Ok. So after resetting it it hasn't come on again and no blinking arrows! Maybe it was just because it sat for 4 days while we were on vacation.