SERVICE AR 5330287 - Caterpillar

Table 1
Event Code    
Code and Description     Conditions which Generate this Code     System Response    
E441(1) Idle Elevated to Increase Battery Voltage     The Electronic Control Module (ECM) detects a low battery voltage.     The warning lamp will illuminate, if equipped.
The code is logged.
The ECM will set a higher engine idle speed.    Probable Causes
This condition does not indicate an electronic system problem. The low idle speed may be elevated due to the low battery voltage elevated idle feature.Note: The "Elevated Idle" status flag will be activated if the above feature is active.Conditions
Low Battery Voltage Elevated Idle
The engine idle speed will be elevated when all of the following conditions occur:
The parameter is set to "Enabled".
System battery voltage is less than 24.5 VDC for five minutes.
The low/high idle switch is set to low idle for five minutes.
The machine is not in gear.