Causes and Fixes P0117 Code: Engine Coolant Temperature Sensor 1 Circuit Low

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How to fix a P0117 Code: Engine Coolant Temperature Sensor 1 Circuit Low
The Engine Coolant Temperature Sensor (ECT) is a Thermistor that changes resistance with the temperature.

The Engine Control Module (ECM) has read the ECT sensor input went to more than 0.14 Volts or 140°C (284°F), indicating a wiring issue.

Possible Causes of a P0117 Engine Code:
Engine Coolant Temp Sensor
Wiring Problem
Overheating Cooling System Issues

By using this information user assumes all risk of use.
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Ty for this, my coolant was low on my 2012 prius plug in. I filled up the reservoir and it went away after 30 mins. Let your car cool down for a bit. ✌️🇺🇲

bm
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What about low coolant? That can cause that code as well

vladimirrendel
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and the car will refuse to start just because of this?

kyswuf