Engine Coolant Temperature Sensor

WARNING: This page is about a different car, the 2003 Dodge Dakota. However, it is still accessible from the selected car via links, so may be relevant.

For Engine Coolant Temperature (ECT) sensor testing, perform appropriate ECT sensor diagnostic test.

On 3.9L and 5.9L, see DIAGNOSTIC TROUBLE CODE DEFINITIONS in SELF-DIAGNOSTICS - DAKOTA - 3.9L & 5.9L article.
On 4.7L, perform DTC P0116: ENGINE COOLANT TEMPERATURE CIRCUIT under DIAGNOSTIC TEST in SELF-DIAGNOSTICS - DAKOTA - 4.7L article.