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Flash: Powertrain Control Module (PCM) Updates Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find one or more of the following Diagnostic Trouble Codes (DTCs) have been set: ? **P2300-00 - Ignition Coil 9A9 Primary Control Circuit Low. ? P2303-00 - Ignition Coil 9B9 Primary Control Circuit Low. ? P2306-00 - Ignition Coil 9C9 Primary Control Circuit Low. ? P2309-00 - Ignition Coil 9D9 Primary Control Circuit Low.** ? P1CEA-00 - Boost Side Evap Purge System Performance. This bulletin involves reprogramming the PCM with the latest available software.