P0715moderate severityPowertrain
Input/Turbine Speed Sensor Circuit
on 2021 Subaru Legacy 2.5L H4 · AWD
What this code means
Malfunction in the transmission input speed sensor.
Symptoms
- Check Engine Light
- Harsh shifting
- No shifting
- Limp mode
- Erratic speedometer
Common causes
- Faulty input speed sensor
- Wiring damage
- Tone ring damage
- Internal transmission damage
Diagnostic steps
- Test sensor output
- Check wiring
- Inspect connector
- Check for metallic debris on sensor
Repair notes
Replace input speed sensor. Check for trans fluid contamination.
Other Powertrain codes on this vehicle
P0001
Fuel Volume Regulator Control Circuit/Open
P0002
Fuel Volume Regulator Control Circuit Range/Performance
P0003
Fuel Volume Regulator Control Circuit Low
P0004
Fuel Volume Regulator Control Circuit High
P0010
Intake Camshaft Position Actuator Circuit/Open Bank 1
P0011
Intake Camshaft Position Timing Over-Advanced Bank 1
P0012
Intake Camshaft Position Timing Over-Retarded Bank 1
P0013
Exhaust Camshaft Position Actuator Circuit/Open Bank 1
P0014
Exhaust Camshaft Position Timing Over-Advanced Bank 1
P0015
Exhaust Camshaft Position Timing Over-Retarded Bank 1