Throttle Position Sensor

For Throttle Position (TP) sensor testing, perform appropriate TP sensor diagnostic test. See the following:

• On 4.7L, perform DTC P0121: THROTTLE POSITION SENSOR #1 PERFORMANCE under DIAGNOSTIC TESTS in SELF-DIAGNOSTICS - DURANGO - 4.7L article.
• On 5.9L, see DIAGNOSTIC TROUBLE CODE DEFINITIONS in SELF-DIAGNOSTICS - DURANGO - 5.9L article.