Cross Slope not working and Front and Rear Error displays are visible. Symptoms : If you are seeing Front Error and Rear Error and you are not using dual scrapers, you may have set up the SCV 1 and SCV 3 incorrectly. Cause : You have not set Cross Slope up correctly on the Application controller. Solutions: Choose ‘Cross Slope Control’ for SCV3’ from the drop down menu in UCC1.  Check the ‘Enable Cross Slope’ box in UCC2.