Posts Tagged: How to Fix P0119

Why The Engine Coolant Temperature Sensor Sets a P0119

How I Diagnose a P0119 Using Professional Techniques Quick Summary A P0119 code means your engine coolant temperature sensor (ECT) is producing an erratic or intermittent signal. In most cases, the P0119 code is caused by a failing engine coolant temperature sensor, a corroded connector, damage to the wiring harness, a low coolant level, or poor thermostat operation. Fixing a P0119 problem requires testing the coolant level, inspecting the wiring, checking sensor resistance, verifying the ECM reference voltage, and confirming the engine reaches proper operating temperature. Below, I’ll walk you … Read More