R light on cluster coming on while braking (1 Viewer)

[A2LX]

I'm on a little trip and the R light on the cluster came on while driving. I pulled off the express way and all of a sudden I couldn't get it to shift out if first gear and the check engine light came on. I limped it 4 miles to a gas station where it eventually shifted to second gear halfway there. After checking fluids I found a parts store a few miles away to get the codes read. After leaving the gas station I've done about 100 miles and have had no shifting issues, but I still have the R light come on while braking along with the back up lights coming on. I did get a P1780 neutral safety switch code that came up. Any thoughts on if the problem is a bad ground somewhere, broken wire, the neutral safety, or possibly even some kind of abs problem?

 

[Eicca]

Smells like a loose ground problem to me. You’ll need the EWD to locate all the points. The one I know of for sure that’ll screw up a transmission is EC, on the back of the block, passenger side. You have to reach down behind to find it.

 

[manny tec]

I'm on a little trip and the R light on the cluster came on while driving. I pulled off the express way and all of a sudden I couldn't get it to shift out if first gear and the check engine light came on. I limped it 4 miles to a gas station where it eventually shifted to second gear halfway there. After checking fluids I found a parts store a few miles away to get the codes read. After leaving the gas station I've done about 100 miles and have had no shifting issues, but I still have the R light come on while braking along with the back up lights coming on. I did get a P1780 neutral safety switch code that came up. Any thoughts on if the problem is a bad ground somewhere, broken wire, the neutral safety, or possibly even some kind of abs problem?

We’re you able to get this issue fixed if so what was the problem?