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P0716 – Input/Turbine Speed Sensor Circuit Range/Performance (OBD2)

P0716 means "Input/Turbine Speed Sensor Circuit Range/Performance". The transmission speed sensor signal is electrically present but implausible: it does not match what the control unit expects for the current operating conditions or from other sensors. This is a performance fault, not a broken wire.

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P0716 quick summary

Fault codeP0716
MeaningInput/Turbine Speed Sensor Circuit Range/Performance
SystemPowertrain (Engine & Transmission)
VehiclesGeneric OBD2
SeverityHigh
Can I drive?Carefully and only to a workshop. The gearbox will often stay in one gear (limp mode).
Repair cost€30 – €500

How gearbox speed sensors work

Gearbox speed sensors measure input (turbine), intermediate and output shaft speed; the control unit uses them to choose gears, control shift quality and detect slipping.

The input or turbine speed sensor measures the speed coming from the torque converter; the output speed sensor measures the speed going to the wheels; some gearboxes also measure an intermediate shaft. Comparing them tells the control unit which gear is engaged and whether clutches are slipping.

Codes P0715–P0718 (input/turbine), P0720–P0723 (output) and P0791–P0794 (intermediate shaft) report circuit, range, no signal and intermittent faults.

A missing speed signal usually puts the gearbox into limp mode and can disable the speedometer and cruise control. Causes include failed sensors, metal debris on magnetic sensors, wiring and connector faults.

On VAG vehicles (VW, Audi, Škoda, Seat, Cupra), VCDS and older VAG testers can show this code as the five-digit VAG code 17100 (P0716). Both numbers mean the same fault.

Symptoms of P0716

  • Gearbox stuck in one gear or harsh shifts
  • Speedometer not working (output sensor)
  • Cruise control not working
  • Flare or slipping between gears
  • Check Engine or gearbox warning

Most common causes of P0716 (most likely first)

Mechanic's Pro Tip

If a magnetic speed sensor is covered in metal paste, clean it but also find out where the debris comes from – it may be a symptom of internal gearbox wear.

  1. 1.Transmission speed sensor worn, contaminated or out of calibration

    Most likely

    The signal drifts slowly, so it is still within the electrical limits but wrong.

  2. 2.Mechanical problem in the system the transmission speed sensor measures or controls

    For example a leak, a sticking part or a restriction that really changes the measured value.

  3. 3.High resistance in a connector or ground

    Corrosion causes a voltage drop that shifts the reading.

  4. 4.Failed speed sensor

  5. 5.Metal debris on the sensor tip

  6. 6.Damaged reluctor (tone) wheel

  7. 7.Internal harness or control unit fault

Step-by-step diagnostic guide

  1. 1

    Read codes and speed values

    Read the transmission codes and compare input, intermediate and output speeds in live data while driving slowly.

  2. 2

    Compare live data with expected values

    Read the transmission speed sensor values in live data and compare them with related readings (engine speed, load, temperature or pressure) and with the specification. A value that is electrically fine but wrong for the conditions confirms a performance fault – then check the mechanical side before replacing the part.

  3. 3

    Inspect the sensor

    Remove the sensor (if external) and check for debris and damage.

  4. 4

    Measure the sensor

    Check the supply and signal on Hall sensors, resistance and AC output on inductive sensors.

    Multimeter: Inductive sensors: typically a few hundred ohms to about 1.5 kΩ.

  5. 5

    Check fluid for debris

    Heavy metal debris in the fluid points to internal wear causing the sensor fault.

  6. 6

    Replace and verify

    Replace the sensor or harness, clear codes and confirm normal shifting.

Frequently asked questions

Can I keep driving with P0716?

Carefully and only to a workshop. The gearbox will often stay in one gear (limp mode).

How much does it cost to fix P0716?

Typical repair costs are 30 € – 500 €, depending on the cause and the vehicle. The most common fixes are: transmission speed sensor worn, contaminated or out of calibration; mechanical problem in the system the transmission speed sensor measures or controls; high resistance in a connector or ground. Always confirm the cause with the tests above before buying parts.

Can a speed sensor cause limp mode?

Yes. Without reliable speed signals, the gearbox cannot shift properly and protects itself.

Is the speedometer connected to the gearbox speed sensor?

On some cars yes (output speed sensor); on most modern cars the speedometer uses ABS wheel speed data.

What is the difference between P0716 and similar codes?

P0716 belongs to a group of codes for the same component that differ in the type or location of the fault: P0715 – Input/Turbine Speed Sensor Circuit Malfunction; P0717 – Input/Turbine Speed Sensor Circuit No Signal; P0718 – Input/Turbine Speed Sensor Circuit Intermittent; P0720 – Output Speed Sensor Circuit Malfunction; P0721 – Output Speed Sensor Circuit Range/Performance; P0722 – Output Speed Sensor Circuit No Signal. The tests on this page apply to the whole group; the type of fault tells you where to start.

Related fault codes

This guide is for information only. Working on vehicles can be dangerous — if you are unsure, have the car checked by a qualified mechanic. Values can differ between model years; always check the manufacturer's repair information.