P0119: Engine coolant temperature sensor circuit intermittent
Drive carefully. Get it checked within a week or two.
Can I drive with P0119?
Yes, but drive carefully and get it checked soon. Intermittent temperature readings cause radiator fans and fuel trims to fluctuate unpredictably.
What does P0119 mean?
P0119 stands for Engine Coolant Temperature Circuit Intermittent.
Symptoms you may notice
- Cabin heater blows lukewarm or cool air in cold weather
- Dashboard temperature gauge stays near cold or fluctuates
- Radiator cooling fans running at high speed continuously
- Decreased gas mileage due to prolonged engine warm-up
How much does it cost to fix?
Repair costs for code P0119 depend on the specific underlying root cause, ranging from simple DIY checks to component replacement. The table below lists the most common causes and rough price ranges in USD:
- Loose terminal pins in the sensor connector
- Intermittent internal defect in the ECT sensor
- Chafed wiring near engine movement brackets
- Air bubbles trapped around the sensor tip
What to do next
- Gently wiggle the temperature sensor harness while watching live scan data.
- Bleed any trapped air from the engine cooling system.
- Replace the sensor if electrical pin tension is snug.
Last updated: October 2026
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General guidance only, not a professional diagnosis. If the check-engine light is flashing, or the car is running rough, overheating or losing power, stop driving and get help.
About this code
Code P0119 occurs when the coolant sensor signal drops out or spikes for fractions of a second during vehicle vibration. You may see the dashboard temperature gauge drop to minimum and bounce back. Inspecting the wire harness retaining clip and replacing the sensor will cure this erratic behavior.