P0339 Chrysler 300C - Crankshaft Position Sensor Intermittent | Step-by-Step Diagnosis

P0339 (Crankshaft Position Sensor Intermittent) on a Chrysler 300 / 300C (2005-2010, LX platform)? This video walks through the complete 12-step factory diagnostic procedure with the wiring diagram and lab scope illustrations. What the code means: the PCM counts dropouts in the CKP signal while cranking and running. When the failure counter reaches 20, P0339 sets (one-trip fault) - typical symptoms are intermittent stalling or a no-start that comes and goes with temperature. In this video: 1. Verify the DTC is active 2. CKP signal on a lab scope - the wiggle test that catches intermittents 3. Wire harness inspection 4. 5-volt supply circuit checks 5. Tone wheel / flex plate inspection 6. CMP signal cross-check on the scope 7. CKP signal circuit shorts and opens 8. When the sensor or the PCM is to blame Applies to Chrysler 300, 300C and 300 SRT-8 (2.7L, 3.5L, 5.7L HEMI, 6.1L) model years 2005-2010. Similar logic applies to Dodge Charger, Magnum and Challenger (same LX platform). This is general information for educational purposes - always confirm against the service information for your exact vehicle.