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P0116 — Engine Coolant Temperature Sensor Range
CautionCoolingLimp to the next safe stop
Seen on: Heavy Truck
Engine Coolant Temperature Sensor Range. Common causes: ECT sensor reading inconsistent.
Don't risk it — get a diesel tech on the truck.
Look up listed providers near you and give them this code when you call.
How serious is it?
Caution. Limp to the next safe stop.
Most likely causes
- ECT sensor reading inconsistent
- Air pocket near sensor
- sensor failure
First moves (roadside)
- Bleed cooling system air
- replace sensor if reading erratic
FAQ
What does P0116 mean?
Engine Coolant Temperature Sensor Range. Common causes: ECT sensor reading inconsistent.
How serious is P0116?
Caution — Limp to the next safe stop.
What's the most likely cause of P0116?
The most common cause is: ECT sensor reading inconsistent. Other possibilities include Air pocket near sensor; sensor failure.
Can I keep driving with P0116?
Limp to the next safe stop. When in doubt, get a qualified mobile diesel tech on the truck before continuing.
Throwing this code right now?
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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.