TM 10-3930-675-10 0020 00-14 ERROR CODES - CONTINUED 0020 00 Table 4. Error Codes - Continued. ERROR CODE DISPLAY LAYOUT DRIVER ACTION ERROR CODE EXPLANATION VEHICLE LIMITATIONS 246 Press RESET Finish mission. Notify maintenance. Warning - Degraded Operation Twistlock  valve  unlock  -  open circuit Cable to valve defective. Impossible to unlock twistlock. 250 Finish Mission Shut engine off/on. If code clears, resume mission. If code remains, notify maintenance. Information/Maintenance Communication    fault    -    ECU 791, connector 3 Computer hardware fault. Possible ECU malfunction. Other codes will also show. 251 Finish Mission Shut engine off/on. If code clears, resume mission. If code remains, notify maintenance. Information/Maintenance Communication fault -ECU 791, connector 3 Computer hardware fault. Possible ECU malfunction. Other codes will also show. 255 Press RESET Finish mission. Notify maintenance. Warning - Degraded Operation Slewing clockwise valve - open circuit Cable to valve defective. Slewing clockwise is not possible. 256 Press RESET Finish mission. Notify maintenance. Warning - Degraded Operation Slewing clockwise valve - short circuit Cable to valve defective. Uncontrolled slewing may occur. 258 Press RESET Finish mission. Notify maintenance. Warning - Degraded Operation Slewing counterclockwise valve - open circuit Cable to valve defective. Slewing clockwise is not possible. 259 Press RESET Finish mission. Notify maintenance. Warning - Degraded Operation Slewing counterclockwise valve - short circuit Cable to valve defective. Uncontrolled slewing may occur.