P1116: Engine Coolant sensor out of range/ECT Sensor Out Of Self Test Range

What does P1116 mean?

P1116 is a diagnostic trouble code indicating "Engine Coolant sensor out of range/ECT Sensor Out Of Self Test Range". A sensor in the cooling system is reporting abnormal data or has lost communication with the ECU. Sensors can fail due to age, contamination, heat exposure, or wiring issues.

Symptoms you may notice

• Check engine light (MIL) illuminated on dashboard
• Engine overheating
• Temperature gauge reading high
• Heater not working properly
• Intermittent warning lights

Common causes

• Stuck thermostat (open or closed)
• Low coolant level or coolant leak
• Failed coolant temperature sensor
• Faulty water pump
• Blocked radiator

What should you do?

Schedule a diagnostic appointment at your earliest convenience. The vehicle is generally safe to drive short distances, but the underlying issue should be addressed to prevent it from worsening.

Get a diagnosis for YOUR car

Code P1116 can mean different things depending on your vehicle. TorqueBot gives you a diagnosis specific to your make, model, and year.

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