C27 and C32 Industrial and Petroleum Engines Caterpillar

Event codes alert the operator that an abnormal engine operating condition such as low oil pressure or high coolant temperature has been detected. When the event code is generated, this indicates that an event has taken place.

Active of Event Codes

An event code represents a problem with engine operation. Correct the problem as soon as possible.

Event codes are listed in ascending numerical order. The code with the lowest number is listed first.

Illustration 1 is an example of the operating range of a temperature sensor. Do not use the Illustration to troubleshoot temperature sensors.

Illustration 1	g01138880
Example of the typical operating range of a temperature sensor (1) This area represents the normal operating range of the parameter. The normal output voltage of the sensor is between 0.2 VDC and 4.2 VDC. (2) In this area, the temperature above 107 °C (225 °F) is higher than normal. The output voltage of the sensor will generate an event code. The sensor does not have an electronic problem. (3) In these areas, the output voltage of the sensor is too high or too low. The voltage is outside of the normal range. The electronic problem will generate a diagnostic code. Refer to Troubleshooting, "Troubleshooting with a Diagnostic Code" for additional information on diagnostic codes.

Events are represented in two formats. In the first format, the "E" means that the code is an event code. The "XXX" represents a numeric identifier for the event code. This is followed by a description of the code. If a warning, a derate, or a shutdown is applicable, the numeric identifiers are different. Refer to the following example:

• E004 Engine Overspeed Shutdown

In the second format, the "E" means that the code is an event code. The "XXX-X" represents a numeric identifier for the event code. The fourth "X" identifies the event as a warning, a derate, or a shutdown. This is followed by a description of the code. Refer to the following example:

• E360-1 Low Oil Pressure Warning

• E360-2 Low Oil Pressure Derate

• E360-3 Low Oil Pressure Shutdown

The definition for a warning, a derate, and a shutdown are defined below:

Warning - This condition represents a serious problem with engine operation. However, this condition does not require a derate or a shutdown.

Derate - For this condition, the Electronic Control Module (ECM) reduces the engine's power in order to help prevent possible engine damage.

Shutdown - For this condition, the ECM shuts down the engine in order to help prevent possible engine damage.

Logged Event Codes

When the ECM generates an event code the ECM logs the code in permanent memory. The ECM has an internal diagnostic clock. The ECM will record the following information when an event code is generated:

• The hour of the first occurrence of the code

• The hour of the last occurrence of the code

• The number of occurrences of the code

Logged events are listed in chronological order. The most recent event code is listed first.

This information can be helpful for troubleshooting intermittent problems. Logged codes can also be used to review the performance of the engine.

Clearing Event Codes

A code is cleared from memory when one of the following conditions occur:

• The code does not recur for 100 hours.

• A new code is logged and there are already ten codes in memory. In this case, the oldest code is cleared.

• The service technician manually clears the code.

Always clear logged event codes after investigating and correcting the problem which generated the code.

Troubleshooting

For basic troubleshooting of the engine, perform the following steps in order to diagnose a malfunction:

1. Obtain the following information about the complaint:

   • The event and the time of the event

   • Determine the conditions for the event. The conditions will include the engine rpm and the load.

   • Determine if there are any systems that were installed by the dealer or by the customer that could cause the event.

   • Determine whether any additional events occurred.

2. Verify that the complaint is not due to normal engine operation. Verify that the complaint is not due to error of the operator.

3. Narrow the probable cause. Consider the operator information, the conditions of operation, and the history of the engine.

4. Perform a visual inspection. Inspect the following items:

   • Fuel supply

   • Oil level

   • Oil supply

   • Wiring

   • Connectors

Be sure to check the connectors. This is very important for problems that are intermittent. Refer to Troubleshooting, "Electrical Connectors - Inspect".

If these steps do not resolve the problem, identify the procedures in this manual that best describe the event. Check each probable cause according to the tests that are recommended.

Trip Points for the Monitoring System

The monitoring system determines the level of action that is taken by the ECM in response to a condition that can damage the engine. When any of these conditions occur, the appropriate event code will trip.

Table 1 contains the conditions that are monitored and the default trip points for each condition. Each condition has an associated parameter. The settings for each parameter can be viewed with the Caterpillar Electronic Technician (ET). The trip points for some of the parameters may be adjustable with Cat ET.

Table 1

Trip Points for the Monitoring System
Parameter	Event Code	Action	Default Value	Time Delay in Seconds		Set Points
				Range	Default	Range	Default
High Fuel Pressure	E096	Warning	On	None	8	None	758 kPa (110 psi)
Low Engine Oil Pressure	E360	Warning	On	None	8	Maps are not programmable. (1)
		Shutdown			4
High Engine Coolant Temperature	E361	Warning	On	None	10	85 °C (185 °F) to 110 °C (230 °F)	110 °C (230 °F)
		Derate		1 to 120		86 °C (187 °F) to 111 °C (232 °F)	111 °C (232 °F)
		Shutdown	Off			87 °C (189 °F) to 111 °C (232 °F)
Engine Overspeed	E362	Warning	On	None	1	None	2600
		Derate					2800
High Fuel Temperature	E363	Warning	On	1 to 120	30	None	90 °C (194 °F)
		Derate			10		91 °C (196 °F)
High Auxiliary Pressure (2)	E443	Warning	On	1 to 54	4	0 kPa (0 psi) to 3150 kPa (457 psi)	1500 kPa (218 psi)
		Derate	Off		3
		Shutdown
High Auxiliary Temperature (2)	E445	Warning	On	1 to 54	4	0 °C (0 °F) to 140 °C (284 °F)	105 °C (221 °F)
		Derate	Off				106 °C (223 °F)
		Shutdown					107 °C (224 °F)
High Intake Manifold Air Temperature	E539	Warning	On	None	8	None	75 °C (167 °F)
		Derate					79 °C (174 °F)
Low Coolant Level	E2143	Derate	On	1 to 54	10	None
		Shutdown	Off
		Warning	On

(1)	The maps may be different. The maps depend on the model of the engine.
(2)	The engine must be equipped with the appropriate sensor.