P0717 — Input/turbine speed sensor — no signal
Input/turbine speed sensor — no signal. Common causes: Failed sensor|Open wire|Missing tone wheel.
Your code rides along, so nearby mechanics see the fault before they quote you.
How serious is it?
Serious. Power derate likely — plan to stop soon.
Most likely causes
- Failed sensor
- Open wire
- Missing tone wheel
First moves (roadside)
- Resistance check sensor
- Inspect wiring
FAQ
Input/turbine speed sensor — no signal. Common causes: Failed sensor|Open wire|Missing tone wheel.
Serious — Power derate likely — plan to stop soon.
The most common cause is: Failed sensor. Other possibilities include Open wire; Missing tone wheel.
Power derate likely — plan to stop soon. When in doubt, get a qualified mobile diesel tech on the truck before continuing.
Find a mechanic or related guides
General diagnostic guidance for diesel engines (Cummins, Detroit, PACCAR, Volvo, Mack and more). Not a substitute for a scan-tool diagnosis on your specific truck.