VALVE GP-CONTROL 2587691 - Caterpillar

Logged Event Codes
Some event codes are logged in the ECM memory. Some event codes are active only. The logged event codes are listed in chronological order. The most recent code is listed first.A logged code is cleared from memory when one of the following conditions occur:
The service technician manually clears the code.
The code does not reoccur for 1000 hours.
A new code is logged and there are already ten logged codes in memory. In this case, the oldest logged code is cleared.Note: Always clear logged event codes after investigating and correcting the problem which generated the code.Troubleshooting
Perform the following steps when troubleshooting an event:
Obtain the following information from the operator monitor and the machine operator:
The event and the time of the event.
Determine the operating conditions for the engine at the time of the event. Conditions such as engine RPM and load may be important.
Determine if there are any systems that were installed by the dealer or by the customer that could cause the event.
Some of the events below can become active during normal system operation. Verify that the event is not due to an error caused by the operator.
Check all fluid levels and all oil levels.
Troubleshoot and repair any active diagnostic codes. Machine ECM Event Code List
The following table lists the event codes that apply to the control system of the machine. The recommended response is listed. Use the Cat ET service tool to determine the event codes that are active or logged.
Table 2
Machine System Event Identifier (EID) Codes    
EID    Level    Description    Possible Cause / Recommended Response    
E119     2     Low Fuel Level     Possible Cause: Low fuel level in the tank, fuel line leakage, or the fuel filter is plugged. Code becomes active 2 seconds after condition is detected.
Recommended Response: Check the fuel level in the tank. If the tank contains fuel, perform a diagnostic check on the "Fuel Filter Plugged" switch. If fuel usage is excessive, inspect the machine for fuel leakage and repair as needed.    
E179     2     Alternator Not Charging     Possible Cause: With an engine speed of greater than 600 RPM, the alternator gauge on the control panel is reading zero for more than 60 seconds.
Recommended Response: Use Cat ET to check for diagnostic codes related to the electrical generating system. Check for diagnostic codes related to a failure of the Machine CAN Data Link, as well.    
E232     2     High Fuel / Water Separator Level     Possible Cause: Event code occurs when the status of the Fuel/Water separator is recorded as full for more than 40 seconds.
Recommended Response: Drain the "Fuel/Water Separator" as soon as possible to bring separator level to normal.    
E235     2     Low Hydraulic Oil Level     Possible Cause: Data Link communication with the Switch Panel has not been established and the status of