Engine Coolant Temperature Sensor Circuit Low
Powertrain Code · Medium
What does P0117 mean?
The coolant temperature sensor is reading lower than expected — possible open circuit or faulty sensor.
System: Coolant System
P0117 is a powertrain diagnostic trouble code indicating engine coolant temperature sensor circuit low. This code is classified as medium severity, which means: schedule service — affects performance or emissions. We have vehicle-specific diagnostic data for 43 models below. Select your vehicle for tailored causes, symptoms, and repair cost estimates.
Diagnostic data on this page is compiled from publicly available repair resources and technical service bulletins. Always have a qualified mechanic confirm the diagnosis before authorizing repairs on your vehicle.
See causes, symptoms, and repair costs for P0117 on specific vehicles: