BAR 1556305 - Caterpillar

Which Generate This Code:Error for the Internal MemoryNote: This diagnostic code may be shown after an firmware version upgrade for the electric mast.Test Step 1. CYCLE POWER TO THE SYSTEM
Move the "Power/Setup" Switch for the display to the "OFF" position.
Turn the key start switch for the machine to the "OFF" position.
Turn the key start switch for the machine to the "ON" position.
Move the "Power/Setup" Switch for the display to the "ON" position.Expected Result:The diagnostic code becomes inactive.Results:
YES - The diagnostic code becomes inactive. Return the machine to service.STOP
NO - The diagnostic code is still active.Repair: Replace the circuit board assembly of the Electric Mast. Refer to Special Instruction, REHS2402, "AccuGrade Electric Mast Repair Instructions".STOP