P0715 — P0715 — Input/Turbine Speed Sensor Circuit
Drivable short-term, but fix now to avoid damage.
What P0715 means
P0715 means the input or turbine speed sensor isn't sending a proper signal to the transmission computer. That sensor tells the computer how fast the input shaft is spinning so it can time gear changes. Without it, shifting becomes confused and the transmission may go into a protective limp mode.
Common symptoms
- Harsh, late, or erratic gear shifts
- Transmission stuck in limp mode (one gear)
- Speedometer or shifting acting up
- Check engine light on
- Slipping or flaring between gears
Common causes
- Faulty input/turbine speed sensor
- Damaged or corroded sensor wiring or connector
- Metal debris on the sensor tip from internal wear
- Low or contaminated transmission fluid
- Poor ground or open circuit in the sensor line
- Faulty transmission control module
Typical repair cost
$150 – $800
Varies by vehicle and root cause.
Frequently asked questions
Can I drive with a P0715 code?
You can usually drive short distances, but it's not ideal. The transmission may shift roughly or go into limp mode, which is stressful on the gearbox, so head to a shop sooner rather than later.
How much does it cost to fix P0715?
If it's just the sensor and wiring, expect roughly $150-$400. If the sensor is hard to reach or fluid work is needed, the cost can rise toward $800.
Is P0715 serious?
Yes, it's considered high severity because it directly affects shifting and can put the transmission into limp mode. Driving on it for long can lead to bigger transmission problems.
What does the input speed sensor do?
It measures how fast the transmission's input shaft is turning so the computer knows when and how to shift. When it fails, the computer loses that information and shifting quality suffers.