Service Codes for Electronic Control Unit (ECU) (8.1 L Engine) - General

IMPORTANT: If any engine service codes are stored within the Engine Controller, transmitted by the Engine Controller, or stored within an on-board code reader that are not in the following list, report these codes to the factory for further instruction.

IMPORTANT: Have Engine Control Unit serviced by your John Deere dealer only.

NOTE: When diagnosing the cause of poor engine performance, perform normal checks of the engine before considering the governor system as the source of the problem.

Following is a listing of all the service codes that can occur in an electronic governor system. Not all of these codes will be present in all engine applications.

ZX,OMUSFH007332 -19-01NOV99-1/1