P0717 fault code: what it means

P0717: On Honda automatics: no signal from the mainshaft (input) speed sensor.

Engine and gearbox (powertrain) · Minor

Usual causes, most likely first

mainshaft speed sensor
sensor wiring or connector

P0717 by make

Honda

On Honda automatics: no signal from the mainshaft (input) speed sensor.

Usual causes: mainshaft speed sensor; sensor wiring or connector

Mercedes-Benz

7G-Tronic turbine speed sensor (Y3/8n1) no signal; usually limp mode in 2nd gear.

Usual causes: failed conductor plate (turbine speed sensor); leaking 13-pin connector; wiring fault

Nissan

CVT input (turbine) speed sensor gives no signal. Can cause poor take-off, no lock-up and limp mode.

Usual causes: input speed sensor fault; sensor wiring or connector fault; internal CVT fault affecting the reading

What the repair usually costs

Parking sensor replace, one sensorNZ$130–NZ$520 · A$130–A$510

Not sure what P0717 means on your car? Ask Credov.

Before you clear it

Write the code down or photograph the scanner first. A code that comes straight back after clearing points to a fault that is still there. A car whose codes were cleared just before you arrived may be hiding one: the scanner's readiness monitors show "not ready" for a while after codes are cleared.

Researched by Credov from manufacturer and workshop sources. A fault code points to where a fault may be; a workshop confirms it with a diagnosis. Browse all fault codes.