P0119
DTC P0119 Engine Coolant Temperature Sensor (ECTS) Gradient FailureWiring Diagram:
Circuit Description
DTC P0119 checks the rationality of engine coolant temperature sensor to compare former with current measured coolant temperature. If the difference between two temperature values is too big, engine coolant temperature sensor should not be rational. Engine coolant temperature is read every 500 ms.
Conditions for Setting the DTC
- Difference between former and current measured coolant temperature is too big.
Action Taken When the DTC Sets
- The Malfunction Indicator Lamp (MIL) will illuminate.
- The ECM will record operating conditions at the time the diagnostic fail. This information will be stored in the Freeze Frame and Failure Records buffers.
- A history DTC is stored.
Conditions for Clearing the MIL/DTC
- The MIL will turn off at the end of three (3) consecutive validation cycles in which the diagnostic runs without a fault.
- A history DTC will clear after 40 warm up cycles without a fault.
- DTC(s) can be cleared by using the scan tool.
Diagnostic Aids
Check for any of the following conditions:
- Check for a faulty electrical connection to the ECM.
An intermittent malfunction may be caused by a fault in the ECT sensor electrical circuit. Inspect the wiring harness and components for an intermittent condition. Repair any electrical circuit faults that were found. If a DTC P0119 cannot be duplicated, the information included in the Freeze Frame data can be useful in determining the vehicle operating conditions when the DTC was first set.
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DTC P0119 - Engine Coolant Temperature Sensor (ECTS) Gradient Failure