Code result

P0717

Input/Turbine Speed Sensor Circuit No Signal

High severity

What it means

TCM detects no signal from the input/turbine speed sensor while the engine is running and the transmission is in gear. Without this signal the TCM cannot compute slip, and the transmission usually enters limp mode.

Is it safe to drive?

No — stop driving

This code can put the vehicle into limp or reduced-power mode. Avoid extended driving and have the vehicle diagnosed promptly.

Most likely causes

  • Input speed sensor failed

    high

    One of the most commonly reported causes for this code — check this first.

  • Wiring or connector fault

    medium

    A plausible cause — test and verify before replacing parts.

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