CM2150 Electronic Control System – FAULT CODE 2813

EGR Valve Control – Special Instructions

Overview

CODE	REASON	EFFECT
Fault Code: 2813 PID: 146 SPN: 2791 FMI: 14 LAMP: Amber SRT:	EGR Valve Control – Special Instructions. The EGR valve has been closed during regeneration of the aftertreatment diesel particulate filter.	EGR valve operation will be disabled.

Aftertreatment System SMALL | MEDIUM | LARGE

Circuit Description

The engine aftertreatment system monitors the soot load in the aftertreatment diesel particulate filter. Under normal operating conditions, the aftertreatment diesel particulate filter is self-cleaning, where soot is converted to carbon dioxide, nitrogen, and water. Under light load operating conditions, it can be necessary to perform a stationary regeneration of the aftertreatment diesel particulate filter. The soot load in the aftertreatment diesel particulate filter is estimated using the aftertreatment differential pressure sensor and the calculated soot output of the engine.

This fault code is triggered when the EGR valve is closed during an active regeneration of the aftertreatment diesel particulate filter. No failure of the aftertreatment system has occurred. Closing the EGR valve increases the exhaust temperature and increasing the rate of regeneration of the aftertreatment diesel particulate filter. No troubleshooting of the aftertreatment system is necessary. This fault code is for information only.

Component Location

The aftertreatment diesel particulate filter is located in the exhaust system. The location of the aftertreatment diesel particulate filter varies depending on the original equipment manufacturer (OEM).

Conditions for Running the Diagnostics

• Active regeneration of the diesel particulate filter must be occurring.

Conditions for Setting the Fault Codes

• The aftertreatment control system has detected that the exhaust temperature is not high enough during an active regeneration of the aftertreatment diesel particulate filter.

Action Taken When the Fault Code is Active

• EGR valve operation is disabled.
• The ECM illuminates the amber CHECK engine light immediately when the diagnostic runs and fails.

Conditions for Clearing the Fault Code

The ECM will disable the fault code immediately after a complete regeneration of the aftertreatment diesel particulate filter.

Use INSITE™ electronic service tool to perform the Aftertreatment Diesel Particulate Filter Regeneration test found under ECM Diagnostics Test.

Shop Talk

Verify the electronic control module (ECM) calibration is correct. Check the calibration revision history found on QuickServe® Online for applicable fixes to the calibration stored in the ECM. If necessary, recalibrate the ECM. Refer to Procedure 019-032 (ECM Calibration Code) in Section 19 in the corresponding Troubleshooting and Repair Manual for the engine being serviced.

This fault code is triggered when the EGR valve is closed during an active regeneration of the aftertreatment diesel particulate filter. No failure of the aftertreatment system has occurred. Closing the EGR valve increases the exhaust temperature and speeds up the rate of regeneration of the aftertreatment diesel particulate filter. No troubleshooting of the aftertreatment system is necessary. This fault code is for information only.

Refer to Troubleshooting Fault Code t05-2813