Code P0717, Speed Sensor?

That code is a turbine speed signal circuit A no signal code. It means either the sensor itself failed or the wiring from it has failed. Testing isn't that difficult, but the first step will be to inspect the wiring. This time of year, rodents love to get into engine compartments and then chew on the wiring. In this case it's a nice hidden spot. So first open the hood and look for any rodent evidence. If found, you will want to address that. Then for the TSS itself, remove the air cleaner housing. To do that release the clamp in the image below, then remove the two screws that hold the intake tube to the housing. Then release the grommets and lift the airbox out. You will see the sensor in the area below it, stuck into the side of the transmission. Inspect the wiring, if there is no damage, unplug the connector and check it for corrosion or damage. If it is okay the next testing involves a multimeter to verify that there is a good ground and a good power, if they are there then the sensor has likely failed. Or you can just get a replacement sensor, swap it, clear the code and see if it returns. If you want to test it first, go to the unplugged connector on the harness. The center pin is signal. With it unplugged connect the meter between pin 3 and ground, with the key on you should see more than 9 volts there, Next put the meter leads on pins 1 and 3 do you see the same voltage? Yes, wiring is okay, sensor is likely faulty. If you get no voltage on pin 3 (Violet wire w green stripe) look over the connector close, the power and grounds are shared between the sensors on that transmission but you only have the single code so the failure would need to be close to the connector. Same issue with the ground wire (Brown with blue stripe). Last it could be the signal wire (White with orange stripe), to check it you would switch to ohms on the meter and connect one lead to pin 2 in the connector and then go to the powertrain control module, with the key off disconnect or use a needle to back probe the connector at pin 27. There should be almost zero ohms resistance or continuity between the two. If they all test out okay, then replace the sensor. To replace it you remove the bolt. Clean around the sensor and pull it straight out of the transmission. Apply a bit of trans fluid to the o-ring on the new sensor and install it, the bolt gets torqued to 89-inch pounds or just tight. Reconnect the wiring. Erase the code and start the engine. No code? Put the airbox together and take it for a test drive.

Well, the part #DL8Z7M101A is about $30 and about a half hour of labor. So probably about $130.00 plus tax depending on where you have it done.

You are welcome.