P1117: Engine Coolant Sensor intermittent/ECT Sensor Intermittent

What does P1117 mean?

P1117 is a diagnostic trouble code indicating "Engine Coolant Sensor intermittent/ECT Sensor Intermittent". 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.

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 P1117 can mean different things depending on your vehicle. TorqueBot gives you a diagnosis specific to your make, model, and year.

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