STUD 1607629 - Caterpillar

Use this section for the troubleshooting of problems that have generated event codes but do not have active diagnostic codes. When the event code is generated, the event is active. Any generated code becomes logged in the permanent memory of the Electronic Control Module (ECM).Event codes alert the operator that an abnormal engine operating condition such as low oil pressure or high coolant temperature has been detected. Events do not indicate problems with the electronic system. Event codes also indicate the nature of the problem. Event codes may be viewed on a personal computer that has the software for the Caterpillar Electronic Technician (ET).
Illustration 1 g00740986
Typical exampleIllustration 1 indicates output voltage from the coolant temperature sensor. When the output signal from the sensor is between 4.2 volts and 4.8 volts, an event code will be generated for above normal coolant temperature.You can program the engine to perform the following actions for some applications:
Engine warning
Engine derate
Engine shutdownCat ET can be used to turn the display of these features on and off. When the features are turned on, the display will appear on an electronic monitoring module and an event will also be logged in the ECM. When the features are turned off, the display will not appear on a monitoring module, but an event will still be logged.System Event Codes
Table 1
3500B System Event Codes    
Event Code    Description    
E017     High Engine Coolant Temperature Warning    
E021     High Exhaust Temperature Derate    
E035     Loss of Coolant Flow Warning    
E038     Low Engine Coolant Temperature Warning    
E072     Oil Level Mark Low    
E073     Oil Filter Differential Pressure High    
E074     Oil Filter Differential Pressure Very High    
E092     Boost Pressure Above Normal    
E093     Boost Pressure Below Normal    
E095     Fuel Filter Restriction Warning    
E098     Engine Preluve Override    
E100     Low Engine Oil Pressure Warning    
E101     High Crankcase Pressure Warning    
E190     Engine Overspeed Warning    
E265     User Defined Shutdown    
E272     Inlet Air Restriction Warning