SPOOL-SELECTOR 6Y5500 - Caterpillar

Table 1
Event Code
Description Conditions which Generate this Code System Response
E038 Low Engine Coolant Temperature Warning The coolant temperature is below the trip point. The code is active and the code is logged. Probable Causes
Faulty water temperature regulator
Long idle periods
Very light loadsRecommended Actions
Water Temperature Regulator
A regulator that is stuck open can cause overcooling. Overcooling also occurs when the water temperature regulator is stuck between the following positions: open position and closed position. Coolant leaks that are around the water temperature regulator can cause overcooling. An example would be a leak in the vent line.Very Light Loads
Very light loads or a very slow engine speed can cause overcooling. This overcooling is caused by the low heat input of the engine.