TM 10-3930-675-10 0020 00-7 ERROR CODES - CONTINUED 0020 00 Table 4. Error Codes - Continued. ERROR CODE DISPLAY LAYOUT DRIVER ACTION ERROR CODE CATEGORY/ EXPLANATION VEHICLE LIMITATIONS 127 Stop Vehicle Put load down safely. Abort mission. Notify maintenance. Stop Vehicle Immediately Signal  for  boom  in/out,  out  of range Cable defective. Short circuit. Potentiometer in joystick not functioning. Boom in/out does not function properly (hydraulic stops). 128 Stop Vehicle Put load down safely. Abort mission. Notify maintenance. Stop Vehicle Immediately Signal for slewing, out of range Cable defective. Short circuit. Potentiometer in joystick not functioning. Slewing does not function properly (hydraulic stops). 129 Stop Vehicle Put load down safely. Abort mission. Notify maintenance. Stop Vehicle Immediately Signal for tilt in/out of range Cable defective. Short circuit. Potentiometer in joystick not functioning. Tilt does not function properly (hydraulic stops). 130 Stop Vehicle Put load down safely. Abort mission. Notify maintenance. Stop Vehicle Immediately Overload protection error Error codes 131 - 136 or 210 have been active. No overload protection system. Reduced hydraulic speed. 131 Stop Vehicle Press RESET. Put load down safely. Abort mission. Notify maintenance. Stop Vehicle Immediately Boom sensor- boom length out of  range  or  no  signal  change when boom is moving Cable defective. Short circuit. Potentiometer damaged. Hydraulic failure. No overload protection system. Reduced hydraulic speed.