Diagnostic Trouble Code
P0715 — Input/Turbine Speed Sensor Circuit
Input/Turbine Speed Sensor Circuit
Definition
The input/turbine speed sensor circuit is not providing a valid signal. This sensor measures the rotational speed of the transmission input shaft (torque converter turbine), which the TCM uses to calculate gear ratios and shift points.
Common Causes
- Faulty input speed sensor
- Damaged wiring or connector
- Contaminated transmission fluid affecting sensor reading
- Internal transmission damage near the sensor