Hi I have a 2003 dodge neon , we did a obd2 scan cause the car wasnt shftng into high gear and speedometer n not working

SOURCE: 2002 Dodge Caravan, Tranny would shift, DTC P0700, P0725

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.

SOURCE: transmission codes:

I WOULD TRY REPLACING THE INPUT SPEED SENSOR..A DEFECTIVE SPEED SENSOR CAN CAUSE ALL OF THESE FAULTS..IT IS LOCATED IN FRONT OF TRANS ABOVE SOLENOID PACK..IT IS THE ONE CLOSEST TO THE ENGINE..IT SCREWS INTO TO TRANSMISSION..A 1 INCH SOCKET FITS IT..ALSO CHECK WIRING TO BOTH SPEED SENSORS..A SENSOR IS ABOUT 35 BUCKS,AVAILABLE AT YOUR LOCAL DODGE DEALER..GET A NEW ONE AND YOU'LL SEE WHAT IT LOOKS LIKE..FAIRLY COMMON PROBLEM..HAVE REPLACED LOTS OF THEM

SOURCE: I have a 2005 Dodge Neon and the engine light came

a had the same problem. i am 99.9 percent sure that the wires going to the sensors underneathe the battery box and air intake are broke inside the insulation. Get to where you can see the connectors. remove the tape from both sensor connectors and give the wires a pull each wire done seperately. Mine was an orange wire and a purple wire. It is not noticeable by looking at the wires because it is the copper wire inside the insulation that will be broke. Find the broke ones and splice in new wire and the problem will be fixed.

SOURCE: 2.0 dodge neon. stuck n second gear.

these transmissions are notorious for being "junk" replace transmission.

SOURCE: 2003 dodge neon PO700 (tcm)

You dont have to pull the tranny to fix this. Some so called "experts" on here shouldnt be giving advice if they dont know. The solenoid pack is located in the front the transmission just below the air filter and in front of the input speed sensor you just replaced. Unbolt the connector with a 10mm socket then the bolts connecting to the tranny. Replace with a new one 140 bux or close(get a new one). Installation is vice versa. Easy fix for any person who is mechanically inclined. Always get a second or third opinion when asking a thousand dollar question on any website. Some people think they know....but they dont.