01 Town Car OD Light flashes

01 Lincoln Town Car with a flashing OD light, i pulled the codes.
P1783- Trans Over Temp condition.
P0712- Trans Fluid temp Sensor Low Input.

Anyone know what could be causing these codes. Tranny fluid is a little dirty but full.
Put some Shutter Fix in about 2 years ago because of a problem with trans shuttering when going into overdrive. I seen alot of problems with the OD light flashing on the internet but no resolutions.

So you put something in the Transmission other than Transmission Fluid and now the light flashes - two years later?

Its hard to say, If I were you, I would flush the transmission and put Lucas in it. The shuddering problem you had a few years back is very common with theses cars. I don't believe the 2 are related. Also might be just a bad sensor or a short. I am not sure where the sensor is located though.

I know the sensor is located under the oil pan. I was just checking to see if it was something common that someone on here had a FIX for.