P1717 – Transmission Input Speed Sensor (Toyota)
Description
The ECM detected a malfunction in the transmission input speed sensor.
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Compare Diagnostic ScannersSymptoms
- Harsh shifting
- Delayed shifting
- Slipping
- Incorrect speed reading
- Check engine light
Causes
- Faulty input speed sensor
- Damaged wiring
- Connector corrosion
- Sensor contamination
- TCM signal fault
Diagnosis
- Test input speed sensor
- Inspect wiring
- Check connectors
- Scan TCM data
- Inspect sensor
Repair
- Replace input speed sensor
- Repair wiring
- Clean connectors
- Remove debris
