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While the code could have set because of a wiring or connection problem, it's almost surely the sensor. Input speed sensor failures are not uncommon.
The input speed sensor is mounted right on the front of the trans directly under where the cooler lines attach. It threads directly in and has a 1" hex for a socket for removal. If the wiring and connection look visibly ok then I would recommend replacing the sensor
P0700 Transmission control system malfunction
P0720 output speed sensor circuit malfunction
P0731 gear ratio error in first gear
P0732 gear ratio error in second gear
Well code 700 is a generic code that means there is a problem with the transmission or the control module. Code 731 is for a problem with first gear which would explain why it stays in second gear. Someone will need to check the circuits involved with first gear and the trans control module. A shop manual will be necessary to get the testing procedures.
P0732 Gear 2 Incorrect Ratio P0720 Output Speed Sensor CKT Malfunction P0736 Reverse Incorrect Ratio P0500 Vehicle Speed Sensor Malfunction P0700 Trans Crt l System Malfunction P0731 Gear I Incorrect Ratio
YOU HAVE A DEFECTIVE OUTPUT SPEED SENSOR ON TRANSMISSION..ABOUT 40 BUCKS,DEALER PART..SCREWS INTO FRONT OF TRANS..NEAR LEFT INNER FENDER,YOU MIGHT WANT A MECHANIC TO REPLACE..
replace the input speed sensor to transmission and the wiring pigtail all are available at your chrysler dealer take your vehicle registration in to the parts counter so they have your vin # to get the right part and it is the front of trans by fluid linres to radiator.
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