P1715
Input Speed Sensor Primary Speed Sensor
Severity
⚠️ MediumCan you drive?
Limited driving only, diagnose soon
Approx. repair cost
$17–67 (est.)
Symptoms
- Incorrect gear shifting
- Transmission slipping
- Transmission of the gearbox into emergency mode
- Check Engine Light Illuminates
- Cruise control doesn't work
Causes
- Faulty input shaft speed sensor
- Open or short circuit in the sensor circuit
- Poor contact in the sensor connector
- Mechanical damage to the sensor
- Transmission control module (TCM) malfunction
How to Fix
- Check the integrity of the sensor circuit
- Inspect the sensor connector and contacts for corrosion
- Check sensor resistance (compare with factory values)
- If necessary, replace the speed sensor
- Reset the error and check the operation of the transmission