Yield is constantly too high or low.
Change yield calibration.
Incorrect header width.
Change header width.
Incorrect crop selection.
Select correct crop.
Dirt, mud, or debris on impact plate.
Clean impact plate.
Yield is zero.
See your John Deere dealer.
Clean grain elevator speed is too low.
Recording problems.
Check if recording status comes ON when harvesting.
OUO6075,0000A76-19-20101103