I am so impressed with all of the responses! You folks are great. It moved into a function mode today and as suspected I was able to read the codes. In mode #1 I got a 1-1-1 read which implies that the transmission is functioning OK. In mode #2 I checked out all of the codes and everything is functi...

Lee, thanks. I agree. If I can get it out of limp mode then I suspect that the test port will function. Will keep trying.

Thanks for the information on resetting. I tried the econo mode and summer position, turning engine off and moving the shift from park to drive. Shifted back and forth at least a half dozen times. No change as the light is still flashing. No ability to read codes. I think this would work with a defe...

Thanks to the prompt reply. At first I thought it was the Gear Position Switch/Sensor or I think it is also called the PNP switch? I installed a new one but prior to that did take the old one apart and found no pitting etc. Looked clean but I used very fine wet and dry and then some dielectric greas...

I have a 1995 Volvo 850 glt, with automatic transmission. The transmission has gone into safe or limp mode with the shift up arrow flashing. I have changed the gear position sensor but there was no difference. I also changed the TCM with a known working one. No change. When I insert the test lead in...