Crankshaft Position Sensor
WARNING: This page is about a different car, the 2003 Jeep Wrangler, 2003 Jeep Liberty, and 2003 Jeep Grand Cherokee. However, it is still accessible from the selected car via links, so may be relevant.
For Crankshaft Position (CKP) sensor testing, perform CKP sensor related diagnostic test. See DIAGNOSTIC TROUBLE CODE DEFINITIONS and DIAGNOSTIC TESTS in appropriate SELF-DIAGNOSTICS article.