P1116moderate severityPowertrain
ECT Sensor Circuit Range/Performance
on 2012 Toyota Camry 2.5L I4 · FWD
What this code means
The engine coolant temperature sensor signal is present but not within the expected range or reacting properly. Similar to OBD P0116 performance faults.
Symptoms
- Check engine light on
- Inaccurate temp gauge
- Poor warm-up performance
Common causes
- Faulty ECT sensor
- Sticking thermostat
- Wiring resistance issues
- Low coolant level
Diagnostic steps
- Compare ECT reading to actual temp
- Inspect thermostat operation
- Check wiring for high resistance
- Replace ECT sensor if drifting
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