PISTON 4646158 - Caterpillar

Which Generate This Code:This diagnostic code is associated with the calibration of the lift valves. The calibration tuning parameters have been corrupted.This usually occurs after a software update.System Response:When this diagnostic code occurs, the calibration values will be reset to defaults.Test Step 1. RECALIBRATE THE VALVE
Restart the procedure for the valve calibration. Refer to Systems Operation, Troubleshooting, Testing and Adjusting, "Bank valve (Grade Control) - Calibrate"Expected Result:Recalibration causes the diagnostic code to become inactive.Results:
OK - Calibration causes the diagnostic code to become inactive.Repair: Return the machine to normal operation.STOP
NOT OK - Calibration has not caused the diagnostic code to become inactive.Repair: The calibration was not performed correctly. Perform the calibration again. Refer to Systems Operation, Troubleshooting, Testing and Adjusting, "Bank valve (Grade Control) - Calibrate".STOPTest Step 2. REFLASH THE FIRMWARE
Reflash the firmware for the display. Refer to Systems Operation, Testing and Adjusting, Troubleshooting, "Module - Flash Program"Results:
OK - STOP