This Preliminary Information communication provides information to the technician the steps on how to diagnose and repair vehicle that may have Service Engine Soon Malfunction Indicator Lamp on. Technician will find Diagnostic Trouble Code P219A. Technician should use published Service Information diagnostics for Diagnostic Trouble Code P219A. If the Global Diagnostic System 2 fuel injector balance test does not isolate a cause for this concern, perform the Fuel Injector Diagnosis (w/CH47976 and CH-47976-500) in Service Information and evaluate for a rich or lean fuel injector.
