The diagnostic fault code did not say to replace the sensor. They never say to replace a part or that one is bad. When a part is referenced in a fault code, it is actually the cause of that code only about half of the time. First we have to rule out wiring and connector terminal problems before spending your money on a part that might not be needed.
Your car doesn't have a neutral safety switch like we're used to seeing. It uses a transmission range sensor as an input to the Transmission Computer. When that computer detects a problem, it indicates that by the way you observed the lights on the dash.
The sensor is in the same place the neutral safety switch used to be on older models. That is on the corner of the transmission closest to the left front corner of the car. The transmission pan must be removed, then the valve body must be removed, to replace the sensor. This job should take 0.8 hours if the car is on a hoist.
There are multiple fault codes related to transmission range sensors, and they can mean very different things. If you know the exact fault code number, you can go here:
to see the definitions, or I can interpret it for you.
Tuesday, April 30th, 2019 AT 4:57 PM