P0118Honda RidgelineYears: 1996 - 2026
Engine Coolant Temperature (ECT) Circuit High Input
Reviewed by ASE Certified Technician
What does this mean?
Code P0118 indicates the ECT sensor voltage is higher than expected, suggesting the sensor reports excessively low temperature.
Disclaimer: This diagnostic code is part of the standard OBD2 system and can apply to Honda Ridgeline models manufactured from 1996 to 2026. However, please note that the presence of this specific code depends on your vehicle's exact engine configuration, options, and production year.
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Common Causes
Faulty Engine Coolant Temperature (ECT) sensor
Damaged, chafed, or broken wiring harness
Corroded or loose electrical connector
Symptoms to Watch For
- Check Engine Light is illuminated
- Decreased fuel economy
- Difficulty starting the engine
- Engine stalls when cold