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P0119 — Engine Coolant Temperature Sensor Intermittent
CautionCoolingLimp to the next safe stop
Seen on: Heavy Truck
Engine Coolant Temperature Sensor Intermittent. Common causes: Intermittent ECT signal.
Don't risk it — get a diesel tech on the truck.
Your code rides along, so nearby mechanics see the fault before they quote you.
How serious is it?
Caution. Limp to the next safe stop.
Most likely causes
- Intermittent ECT signal
- Loose connector
- cracked sensor body
First moves (roadside)
- Inspect ECT connector
- wiggle test harness
- replace sensor
FAQ
What does P0119 mean?
Engine Coolant Temperature Sensor Intermittent. Common causes: Intermittent ECT signal.
How serious is P0119?
Caution — Limp to the next safe stop.
What's the most likely cause of P0119?
The most common cause is: Intermittent ECT signal. Other possibilities include Loose connector; cracked sensor body.
Can I keep driving with P0119?
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?
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.