Possible causes

– Faulty Transmission Speed Sensor
– Transmission Speed Sensor harness is open or shorted
– Transmission Speed Sensor circuit poor electrical connection

When is the code detected?

Diagnostic Trouble Code (DTC) P0717 is detected when TCM or ECM receives no signal from the sensor.

Symptoms

– Engine Light ON (or Service Engine Soon Warning Light)
– Possible shifting problems

P0717 TOYOTA Description

The input speed sensor detects the primary pulley revolution speed and sends a signal to the Transmission Control Module (TCM) and Engine Control Module (ECM).

TOYOTA Technical Service Bulletins for P0717 code