Quick checklist
Check ECT sensor wiring, test sensor
OBD2 Codes
P0116 – Engine Coolant Temperature (ECT) Sensor Range/Performance
ECT sensor reading out of range
Details
The ECT sensor is reading outside normal range.
Typical causesFaulty ECT sensor, wiring issue
SymptomsCheck engine light, poor fuel economy
SeverityMedium
DIY checksCheck ECT sensor wiring, test sensor
ToolsOBD2 scanner, temperature scanner
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FAQ
Common questions
What causes P0116?
Faulty ECT sensor, wiring issue
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