Engine Coolant Temperature Sensor
For Engine Coolant Temperature (ECT) sensor testing, perform the following diagnostic test:
- On 4.7L, see DTC P0116: ENGINE COOLANT TEMPERATURE CIRCUIT under DIAGNOSTIC TEST in SELF-DIAGNOSTICS - DURANGO - 4.7L article.
- On 5.9L, perform appropriate ECT sensor diagnostic test. See DIAGNOSTIC TROUBLE CODE DEFINITIONS in SELF-DIAGNOSTICS - DURANGO - 5.9L article.