P0119Medium urgency

Engine Coolant Temperature Sensor Circuit Intermittent

Engine · Cooling System

⚠️ Fix soon — intermittent faults can worsen over time.

What this means

The ECT sensor signal is dropping in and out intermittently. Typically points to a loose connector, damaged wiring harness, or a sensor failing under heat or vibration.

Likely causes

Loose or corroded ECT sensor connectorMost common
Damaged wiring harness (chafing)Common
Failing ECT sensorCommon

Estimated repair cost

Connector cleaning/repair$50 – $150

ECT sensor replacement$75 – $200

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Frequently asked questions

What does P0119 mean?

The ECT sensor signal is dropping in and out intermittently. Typically points to a loose connector, damaged wiring harness, or a sensor failing under heat or vibration.

Is P0119 serious?

Fix soon — intermittent faults can worsen over time.

How much does it cost to fix P0119?

Repair costs for P0119 range from $50 – $150 depending on the root cause and your vehicle.

Can I drive with P0119?

You can drive short distances but should have it repaired within 1-2 weeks to prevent further damage.