P0715 Input/Turbine Speed Sensor Circuit Malfunction .

SOURCE: P0715 Input Speed Sensor Circuit A Malfunction

There is more than likely just a sensor that needs to be replaced, Either that or there is a problem with the wiring somewhere. How does the vehicle behave when shifting?

SOURCE: input/turbine speed sensor circuit

Your speed sensor, is located on top of the transaxle, near the starter. To access it, remove the battery, then remove the battery tray (4 10mm bolts). You will see wires coming from the lower oxygen sensor, and they snap into the bracket that holds the speed sensor in place. The actual speed sensor has a 2 wire clip on it, and is held in place by the bracket and a 10mm bolt.

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 Volkswagen TDI 1.9L - diagonistic fault

That code also reads as: Transmission Input Speed Sensor (G182): Circuit Malfunction

The sensor is located inside the transmission. Not exactly a DIY type of job...

SOURCE: I have a code p0715, which is the input turbine speed sensor

The input/turbine speed sensor has nothing to do with the turbo. It is transmission related and is a circuit malfunction. I am having the same problem and it causes my car to downshift into 3rd gear (computer's fail safe gear) on the highway. The sensor is located above the transmission housing, and doesn't require you to take apart the tranny. I am having trouble finding the part number for this and where to buy it. Any help would be nice.