P0715Input/Turbine Shaft Speed Sensor A Circuit
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- The input or turbine shaft speed sensor – a Hall sensor with square-wave output or an inductive sensor with sine output – reports the speed behind the torque converter. With output and engine speed it gives the actual gear ratio, converter slip and shift timing. P0715 is the general circuit code. Ford uses it for 'no signal' too: the vehicle is moving under power (engine above converter stall speed, output speed plausible) but the sensor reports under 200 rpm for 5–30 s; Ford's DPS6 dual-clutch sets it for a hardware-detected fault of input shaft sensor 1. Subaru-based systems flag an open or shorted circuit, Saab's Aisin box no input signal while the output sensor works, substituting output speed. GM does not use P0715. Limp mode, harsh shifts and a disabled converter clutch follow.
- What you may notice
- Check engine and/or transmission warning lamp
- Limp mode with fixed gear, harsh shifts
- Torque converter clutch does not apply
- Input speed shows 0 or implausible in the scan tool
- Likely causes
- LikelySpeed sensor faulty (Hall IC or coil open or shorted)
- LikelyConnector or harness corroded, chafed or loose pins (with internal sensors also the pass-through connector)
- PossibleMetal debris on the sensor magnet or damaged reluctor wheel
- RareTransmission module or its sensor supply faulty
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Often possible to do yourself.Typical cost: €80 – €450
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.