P0716Input/Turbine Shaft Speed Sensor A Circuit Range/Performance
- 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. P0716 means a signal is present but implausible: too high, or dropping suddenly without recovering. GM's 2025 modules count drops of more than 650 rpm between 25 ms samples and fail after more than three; the 6T70 in the Saab 9-4X flags a 1350 rpm drop for 1 s; the 2007 Allison 1000 also detects noise and swapped sensor wires; all after one trip. Ford's 6R80 flags turbine speed above 7700 rpm. The 6T70 then runs only reverse and fifth gear, with maximum line pressure and no converter clutch.
- What you may notice
- Check engine and/or transmission warning lamp
- Limp mode with fixed gear (6T70: reverse and fifth only)
- Harsh or delayed shifts
- Torque converter clutch locked out
- Likely causes
- LikelyLoose contact or chafing in the sensor circuit
- PossibleSensor faulty, wrong air gap or metal debris
- PossibleReluctor wheel or clutch drum damaged
- RareSensor wires swapped after repair or interference
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Hard · Usually a job for a workshop.Typical cost: €150 – €1,500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.