PUMP GP-PISTON 4387729 - Caterpillar

Troubleshooting
Diagnostic Summary Screen
The diagnostic summary screen is accessed from the Menu Screen. Press the Diagnostics option directly or use the up or down arrows to select the Diagnostics option and then press "OK". The first screen that will appear when the diagnostic summary screen is accessed will be like Illustration 1.
Illustration 1 g03648040
Diagnostic Summary ScreenAdditional information on each code is available by highlighting the desired code and pressing the "OK" button. Press the up and down arrow button in order to highlight the code. Press the "OK" button and the screen will change to a more detailed view of the selected code. Refer to Illustration 2.
Illustration 2 g03432968
Detailed Diagnostic Summary ScreenDiagnostic Codes
Table 1
Component     Diagnostic Code     Type of Failure     Possible Cause    
CAN Data Link     247-9     CAN Data Link Not Communicating     Abnormal update rate on the CAN data link. Object detection system disabled. System reactivates when all CAN parameters are available.    
Battery Supply     168-3     Voltage Above Normal     System Voltage Above Normal. There is a possible issue with the charging system. Object detection system and warnings disabled until system voltage returns below threshold.    
Battery Supply     168-4     Voltage Below Normal     System Voltage Below Normal. There is a possible issue with the charging system. Object detection system and warnings disabled until system voltage returns above threshold.    
CDL Fault     248-9     Cat Data Link not communicating     Abnormal update rate on the CAT Data link Object detection system disabled. System reactivates when all CAN parameters are available.    
Object Detection Sensor #2     3318-9     Medium Range Object Detection Sensor #2 : Abnormal Update Rate     No data from Rear Object Detection Sensor. Object detection system and warnings disabled until fault is fixed.    
Object Detection Sensor #2     3318-12     Medium Range Object Detection Sensor #2 : Failure     Rear Object Detection Sensor detects failure. Object detection system and warnings disabled until fault is fixed.    
Object Detection Sensor #3     3319-9     Medium Range Object Detection Sensor #3 : Abnormal Update Rate     No data from Front Object Detection Sensor. Object detection system and warnings disabled until fault is fixed    
Object Detection Sensor #3     3319-12     Medium Range Object Detection Sensor #3 : Failure     Front Object Detection Sensor detects failure. Object detection system and warnings disabled until fault is fixed.