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my car shifts into reverse ,drive
but.will not shift gears driving .this only happpened after friend used my car to jump start theres they rev. My car for about 4 minutes without stopping my car was fine before that

Vehicle: Chrysler 300 3 .5 liter

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P0700 Transmission system malfunction

P0720 Output speed sensor circuit

P0731 Gear ratio error in 1st

The problem with P0731 it can put the transmission in limp mode this when you have limited , power.P0731 is also a indication of a internal transmission failure,hopefully this is not the case because you have P0720 the output speed sensor This sensor generates its own voltage and is responsible for gear shift input, There are 2 speed sensor you transmission uses it is the input and output speed sensor,For now replace the output speed sensor, The output is number 2 in diagram

 

 

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