Chrysler Repair: 2000 Chrysler Concorde LXi transmission question, chrysler concorde lxi, 2000 chrysler concorde lxi

Question
My Chrysler's transmission is overrevving and shifting at the wrong times.  Also, as i come to a stop my transmission shakes violently as it downshifts back into first.  OBD2 interface codes for the problem are:

P0730 Incorrect Gear Ratio
P0731 Incorrect 1st Gear Ratio
P0732 Incorrect 2nd Gear Ratio
P0736 Reverse incorrect gear ratio

I believe it is the Engine Speed and Output Sensors.  however i am coming to you for your expertise.  thank you for your time and knowledge.

Answer
Hi JP,
Based on having those 3 specific ratios showing up bad, which is pretty unlikely, I have to agree with you that it is probably a failing sensor. More likely the output sensor than the input sensor, but one or both. Start with the output and see if that solves the problem. Please let me know if this is not the case.
Roland