ECM Codes

After diagnostics is entered any "Trouble Codes" stored in computer memory will be displayed. ECM codes will be displayed first. If no ECM trouble codes are stored, a "NO ECM CODES" message will be displayed. All ECM codes will be prefixed with a "E" (i.e. EO13, EO14, etc.).

For the ECM code assignments, see DIAGNOSTIC TROUBLE CODE DEFINITIONS  . The lowest numbered ECM code will be displayed first followed by progressively higher numbered codes present.