There are a few possible causes for the code P0715, including:
- A faulty transmission input/turbine speed sensor
- A damaged or loose wiring harness to the transmission input/turbine speed sensor
- A PCM problem
To diagnose the code P0715, a mechanic will need to use a diagnostic tool to gather data from the transmission control module. The mechanic may also need to perform some electrical tests to check the wiring harness and the transmission input/turbine speed sensor.
Once the cause of the code P0715 has been diagnosed, the mechanic will recommend the appropriate repairs. In most cases, the repair will involve replacing the transmission input/turbine speed sensor or repairing the wiring harness.