Introduction To Diagnostic Trouble Codes

When either a Service Alert or Information indicator is displayed, the tractor should be placed in park and engine shut off. Before contacting your John Deere dealer, restart the engine to verify the active Diagnostic Trouble Code will reappear. Sometimes, the code can be corrected by resetting the communication messages when tractor is restarted.

Some Service Alerts and Information indicators can be acknowledged and display cleared by pressing the SELECT switch on the CommandCenter. The display will return to a normal mode. This will allow tractor function to continue however Diagnostic Trouble Code may reappear at a later date if condition still exists.

If a code is not in this section, contact your John Deere dealer.