18-108-15

Flash: 8.4L Powertrain Diagnostic And System Enhancements This bulletin involves reprogramming the Powertrain Control Module (PCM) with the latest available software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the Technician may find that the following Diagnostic Trouble Codes (DTCs) has been set in the PCM memory: ? P0300 - Multiple Cylinder Misfire. ? P0521 - Engine Oil Pressure Sensor Performance.