Cummins X12 CM2350 Fault Code 3376 |SPN 5319 |FMI 11/31

Uncategorized

FAULT CODE 3376

Aftertreatment 1 Diesel Particulate Filter Incomplete Regeneration – Condition Exists

Overview

 

CODE REASON EFFECT
Fault Code: 3376
PID:
SPN: 5319
FMI: 11/31
LAMP: Amber
SRT:

 

The system has detected that the aftertreatment diesel particulate filter differential pressure is too high following an active regeneration.

 

 

Possible frequent need for aftertreatment regeneration.

 
Engine Control Module (ECM)

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.

Component Location

The aftertreatment diesel particulate filter differential pressure sensor is mounted on the diesel particulate filter. It is a combination sensor that detects both diesel particulate filter differential pressure and outlet pressure. Refer to the original equipment manufacturer (OEM) service manual.

 

Conditions for Running the Diagnostics

This diagnostic only runs after successful completion of an active regeneration of the aftertreatment diesel particulate filter.

Conditions for Setting the Fault Codes

The estimated soot load in the aftertreatment diesel particulate filter was higher than a calibratible value.

Action Taken When the Fault Code is Active

  • The ECM illuminates the amber CHECK ENGINE lamp and/or malfunction indicator lamp (MIL) after the diagnostic fails on two consecutive trips.

Conditions for Clearing the Fault Code

  • To validate the repair using a Diagnostic Road Test, utilize a route that incorporates both stop and go city type driving and steady state highway type driving. It may be necessary to load the unit for certain diagnostics in the ECM to run.
  • To validate the repair using a Chassis Dynamometer, utilize a routine that incorporates acceleration and motoring events, steady state highway type operation, and load. This will simulate normal driving and allow the diagnostics in the ECM to run.
  • The fault code status displayed by INSITE electronic service tool will change to inactive immediately after the diagnostic runs and passes.
  • For On-Board Diagnostics (OBD) engines, the ECM will extinguish the Malfunction Indicator Lamp (MIL) after three consecutive trips where the diagnostic runs and passes.
  • The Reset All Faults command in INSITE electronic service tool can be used to clear active and inactive faults, as well as extinguish the MIL for OBD applications

 

Shop Talk

Possible causes of this fault code include:

  • Malfunctioning aftertreatment temperature sensors

A malfunctioning aftertreatment diesel oxidation catalyst

  • A malfunctioning or stuck in-range aftertreatment diesel particulate filter differential pressure sensor
  • An engine malfunction resulting in high engine out smoke
  • Excessive ash in the DPF

A damaged or malfunctioning OEM wiring harness to the differential pressure sensor.

Troubleshooting Summary

  1. Fault Code 3376 requires that ALL solutions be performed
  2. Check for primary fault codes
  3. Plugged EGR differential pressure sensor supply ports
  4. Restricted intake air filter
  5. Damaged or missing aftertreatment DPF differential pressure sensor tubes
  6. Aftertreatment DPF differential pressure sensor stuck in-range
  7. Leaks in the intake air system
  8. Charge Air Cooler Leak Test
  9. Aftertreatment temperature sensor stuck in-range
  10. Aftertreatment DPF partially obstructed or plugged
  11. Aftertreatment Diesel Particulate Filter Regeneration Analyzer Test
  12. Snap acceleration check for excessive black smoke
  13. Aftertreatment DOC is malfunctioning
  14. ECM calibration revision history check

Verification

Conditions

  • Turn keyswitch OFF.

Action

  • This solution is information only.
  • ALL solutions displayed for this fault code must be performed.
  • Continue to perform the verifications of ALL solution steps listed for this fault code regardless if a given solution is within specification or out of specification.
  • If redirected in this troubleshooting to another fault code or symptom it is required to come back to this fault code troubleshooting and complete every step.

Specification

  • This solution is information only.

Linked Solutions

  • None

Repair

  • If a resolution is found in any solution for this fault code, continue performing ALL solutions listed for this fault code.

Validation

  • None

Verification

Conditions

  • Turn keyswitch ON.
  • Connect the recommended Cummins electronic service tool or equivalent.

Action

  • Use the recommended Cummins electronic service tool or equivalent to read the fault codes.

Specification

Before troubleshooting this fault code, troubleshoot any fault code that is active or has more than one inactive count within the last 25 engine operating hours from the following list:

  • Aftertreatment DPF: 1879, 1881, 1883, 3133, 3134, 3135, 5383
  • Fuel: 559, 1139, 1141, 1142, 1143, 1144, 1145
  • Intake manifold: 125, 2973
  • Aftertreatment DOC: 1664
  • Aftertreatment fuel: 1925, 1926, 1932, 1963, 1964, 3167
  • EGR: 1228, 1896, 2349, 2353, 2961, 2962, 3136, 3137, 3138, 3342, 3382, 3383
  • EGR differential pressure: 1866, 1867, 2273, 2274
  • Turbocharger: 1898, 2198, 2387, 2449, 2634, 2635, 2636, 3616

Linked Solutions

  • None

Repair

  • Perform a search on the appropriate fault codes.

Validation

  • None

Verification

Conditions

  • Turn keyswitch OFF.

Action

  • Inspect the EGR differential pressure sensor flow port cross-drillings for soot blockage.

Specification

  • If plugging or damage is found, then proceed to the Repair section.

Linked Solutions

  • None

Repair

  • Remove and clean the EGR mass measurement flow assembly.

Validation

  • Connect all components
  • Connect the recommended Cummins electronic service tool or equivalent.
  • Disable the fault code.
  • Operate the engine within the “Conditions for Clearing the Fault Code” found in the Overview section of the troubleshooting procedure.
  • Verify that the fault code is no longer active.
  • Check ECM Calibration Revision History
  • Use the recommended Cummins electronic service tool or equivalent to find the current ECM code and revision number in the ECM.
  • Compare the ECM code and revision number in the ECM to the calibration revisions listed in the ECM Calibration Revision History Database for applicable changes related to this fault code.
  • Refer to ECM Calibration Revision History Database.

Verification

Conditions

  • Turn keyswitch OFF.

Action

  • Visually inspect the air filter to make sure it is not plugged.

Specification

  • If the intake air filter is plugged, then a restricted intake air filter has been detected.

Linked Solutions

  • None

Repair

  • Replace the air filter.

Validation

  • Connect all components
  • Connect the recommended Cummins electronic service tool or equivalent.
  • Disable the fault code.
  • Operate the engine within the “Conditions for Clearing the Fault Code” found in the Overview section of the troubleshooting procedure.
  • Verify that the fault code is no longer active.
  • Check ECM Calibration Revision History
  • Use the recommended Cummins electronic service tool or equivalent to find the current ECM code and revision number in the ECM.
  • Compare the ECM code and revision number in the ECM to the calibration revisions listed in the ECM Calibration Revision History Database for applicable changes related to this fault code.
  • Refer to ECM Calibration Revision History Database.

Verification

Conditions

  • Turn keyswitch OFF.

Action

  • Visually inspect the aftertreatment differential pressure tubes for proper installation.
  • Inspect the aftertreatment DPF differential pressure sensor tubes for signs of damage, plugging, kinks, leakage or loose connections.

In extreme cold ambient temperatures it is important to check for a frozen, plugged, or restricted aftertreatment DPF differential pressure sensor tubes. Ice can form in the aftertreatment DPF differential pressure sensor tubes causing obstruction/sticking and may not be present at the time of troubleshooting.

Specification

  • If damage, kinks or blockages are found, then proceed to the Repair section.

Linked Solutions

  • None

Repair

  • Repair or replace DPF differential pressure sensor tubes.

Validation

  • Check ECM Calibration Revision History
  • Use the recommended Cummins electronic service tool or equivalent to find the current ECM code and revision number in the ECM.
  • Compare the ECM code and revision number in the ECM to the calibration revisions listed in the ECM Calibration Revision History Database for applicable changes related to this fault code.
  • Refer to ECM Calibration Revision History Database.
  • Connect all components
  • Connect the recommended Cummins electronic service tool or equivalent.
  • Operate the engine within the “Conditions for Clearing the Fault Code” found in the Overview section of the troubleshooting procedure.
  • Verify that the fault code is no longer active.

Verification

Conditions

  • Turn keyswitch ON.
  • Connect the recommended Cummins electronic service tool or equivalent.

Action

  • Use the recommended Cummins electronic service tool or equivalent.
  • Monitor the aftertreatment DPF differential pressure sensor voltage.

Specification

  • If the aftertreatment DPF differential pressure sensor voltage readings are not within specification, then a malfunctioning aftertreatment DPF differential pressure sensor has been detected.

Linked Solutions

  • None

Repair

  • Replace aftertreatment DPF differential pressure sensor.

Validation

  • Connect all components
  • Connect the recommended Cummins electronic service tool or equivalent.
  • Disable the fault code.
  • Operate the engine within the “Conditions for Clearing the Fault Code” found in the Overview section of the troubleshooting procedure.
  • Verify that the fault code is no longer active.
  • Check ECM Calibration Revision History
  • Use the recommended Cummins electronic service tool or equivalent to find the current ECM code and revision number in the ECM.
  • Compare the ECM code and revision number in the ECM to the calibration revisions listed in the ECM Calibration Revision History Database for applicable changes related to this fault code.
  • Refer to ECM Calibration Revision History Database.

Verification

Conditions

  • Turn keyswitch OFF.

Action

  • Inspect the intake plumbing for possible air leaks.

Specification

  • If a leak is found, then proceed to the Repair section.

Linked Solutions

  • None

Repair

  • Repair or replace the leaking components.

Validation

  • Connect all components
  • Connect the recommended Cummins electronic service tool or equivalent.
  • Disable the fault code.
  • Operate the engine within the “Conditions for Clearing the Fault Code” found in the Overview section of the troubleshooting procedure.
  • Verify that the fault code is no longer active.
  • Check ECM Calibration Revision History
  • Use the recommended Cummins electronic service tool or equivalent to find the current ECM code and revision number in the ECM.
  • Compare the ECM code and revision number in the ECM to the calibration revisions listed in the ECM Calibration Revision History Database for applicable changes related to this fault code.
  • Refer to ECM Calibration Revision History Database.

Verification

Conditions

  • Turn keyswitch OFF.

Action

  • Perform the Charge Air Cooler Leak Test.

Specification

  • If a leak is found, then proceed to the Repair section.

Linked Solutions

  • None

Repair

Repair or replace only the components that were found to be out of specification.

  • Repair or replace the charge air cooler.
  • Repair or replace the charge air cooler hoses.

Validation

  • Connect all components
  • Connect the recommended Cummins electronic service tool or equivalent.
  • Disable the fault code.
  • Operate the engine within the “Conditions for Clearing the Fault Code” found in the Overview section of the troubleshooting procedure.
  • Verify that the fault code is no longer active.
  • Check ECM Calibration Revision History
  • Use the recommended Cummins electronic service tool or equivalent to find the current ECM code and revision number in the ECM.
  • Compare the ECM code and revision number in the ECM to the calibration revisions listed in the ECM Calibration Revision History Database for applicable changes related to this fault code.
  • Refer to ECM Calibration Revision History Database.

Verification

Conditions

  • Connect all components.
  • Turn keyswitch ON.
  • Connect the recommended Cummins electronic service tool or equivalent.
  • Start the engine.

Action

  • Run the engine at high idle for the following minutes: 10
  • Use the recommended Cummins electronic service tool or equivalent.

Monitor the following parameters:

  • Aftertreatment diesel oxidation catalyst intake temperature
  • Aftertreatment diesel particulate filter intake temperature
  • Aftertreatment diesel particulate filter outlet temperature

Specification

  • A malfunctioning aftertreatment exhaust gas temperature sensor has been detected if each sensor is not within the following specification of the others: 24 C [43 F]

Linked Solutions

  • None

Repair

Repair or replace only the components that were found to be out of specification.

  • Replace the aftertreatment exhaust gas temperature sensor module.

Validation

  • Connect all components
  • Connect the recommended Cummins electronic service tool or equivalent.
  • Disable the fault code.
  • Operate the engine within the “Conditions for Clearing the Fault Code” found in the Overview section of the troubleshooting procedure.
  • Verify that the fault code is no longer active.
  • Check ECM Calibration Revision History
  • Use the recommended Cummins electronic service tool or equivalent to find the current ECM code and revision number in the ECM.
  • Compare the ECM code and revision number in the ECM to the calibration revisions listed in the ECM Calibration Revision History Database for applicable changes related to this fault code.
  • Refer to ECM Calibration Revision History Database.

Verification

Conditions

  • Turn keyswitch ON.
  • Connect the recommended Cummins electronic service tool or equivalent.

Action

  • If the aftertreatment DPF has already been replaced during this repair, then proceed to the next solution.
  • Use the recommended Cummins electronic service tool or equivalent.
  • Perform the Aftertreatment Diesel Particulate Filter Automated Restriction Test.

Specification

  • If the Aftertreatment Diesel Particulate Filter Automated Restriction Test exceeds the limits called out in procedure, then a plugged or restricted aftertreatment DPF has been detected.

Linked Solutions

  • None

Repair

  • Replace aftertreatment DPF.

Validation

  • Connect all components
  • Connect the recommended Cummins electronic service tool or equivalent.
  • Disable the fault code.
  • Operate the engine within the “Conditions for Clearing the Fault Code” found in the Overview section of the troubleshooting procedure.
  • Verify that the fault code is no longer active.
  • Check ECM Calibration Revision History
  • Use the recommended Cummins electronic service tool or equivalent to find the current ECM code and revision number in the ECM.
  • Compare the ECM code and revision number in the ECM to the calibration revisions listed in the ECM Calibration Revision History Database for applicable changes related to this fault code.
  • Refer to ECM Calibration Revision History Database.

 

Verification

Conditions

  • Reconnect previously disconnected components.
  • Turn keyswitch ON.
  • Connect the recommended Cummins electronic service tool or equivalent.

Action

  • Use the recommended Cummins electronic service tool or equivalent.
  • Perform the Aftertreatment Diesel Particulate Filter Regeneration Analyzer Test.
  • Verify the recommended Cummins electronic service tool or equivalent has a version that supports this test.

Specification

  • If the Aftertreatment Diesel Particulate Filter Regeneration Analyzer Test does not pass, then reset the search to Aftertreatment Diesel Particulate Filter Regeneration Analyzer Did Not Pass. Only select the solution title that matches the error messages in the recommend Cummins electronic service tool or equivalent.
  • If the Aftertreatment Diesel Particulate Filter Regeneration Analyzer Test will not start, then reset the search to Aftertreatment Diesel Particulate Filter Regeneration Analyzer Did Not Start.
  • If the Aftertreatment Diesel Particulate Filter Regeneration Analyzer Test does not complete, then reset the search to Aftertreatment Diesel Particulate Filter Regeneration Analyzer Did Not Complete.

Linked Solutions

  • None

Repair

  • No additional action is required for this solution.

Validation

  • None

Verification

Conditions

  • Engine running.

Action

Verify the hood is closed for vehicles with the air intake system integrated into the hood.

  • Perform the Snap Acceleration Test – Aftertreatment Disconnected.

Specification

White smoke during deceleration does not indicate a malfunction.

  • If excessive black smoke is detected, then reset the search to black smoke.

Linked Solutions

  • None

Repair

  • No additional action is required for this solution.

Validation

  • Connect all components
  • Connect the recommended Cummins electronic service tool or equivalent.
  • Disable the fault code.
  • Operate the engine within the “Conditions for Clearing the Fault Code” found in the Overview section of the troubleshooting procedure.
  • Verify that the fault code is no longer active.
  • Check ECM Calibration Revision History
  • Use the recommended Cummins electronic service tool or equivalent to find the current ECM code and revision number in the ECM.
  • Compare the ECM code and revision number in the ECM to the calibration revisions listed in the ECM Calibration Revision History Database for applicable changes related to this fault code.
  • Refer to ECM Calibration Revision History Database.

Verification

Conditions

  • Turn keyswitch OFF.

Action

  • Visually inspect for the presence of the aftertreatment DOC.
  • Inspect the inlet face of the aftertreatment DOC for reuse.
  • Inspect for cracks in the aftertreatment DOC cell walls.
  • Inspect for soot or oil plugging the front face of the catalyst

Specification

  • If plugging or damage is found, then proceed to the Repair section.
  • If the face of the aftertreatment diesel oxidation catalyst is cracked or damaged, then proceed to Repair section.

Linked Solutions

  • None

Repair

Repair or replace only the components that were found to be out of specification.

  • If the face of the aftertreatment DOC is plugged, then clean the aftertreatment DOC.
  • If the face of the aftertreatment DOC is cracked or damaged, then replace the aftertreatment DOC.

Validation

  • Connect all components
  • Connect the recommended Cummins electronic service tool or equivalent.
  • Disable the fault code.
  • Operate the engine within the “Conditions for Clearing the Fault Code” found in the Overview section of the troubleshooting procedure.
  • Verify that the fault code is no longer active.
  • Check ECM Calibration Revision History
  • Use the recommended Cummins electronic service tool or equivalent to find the current ECM code and revision number in the ECM.
  • Compare the ECM code and revision number in the ECM to the calibration revisions listed in the ECM Calibration Revision History Database for applicable changes related to this fault code.
  • Refer to ECM Calibration Revision History Database.

Verification

Conditions

  • Connect all components.
  • Turn keyswitch ON.
  • Connect the recommended Cummins electronic service tool or equivalent.

Action

  • Use the recommended Cummins electronic service tool or equivalent to read the fault codes.
  • Use the recommended Cummins electronic service tool or equivalent to find the current ECM code and revision number in the ECM.
  • Compare the ECM code and revision number in the ECM to the calibration revision listed in the ECM calibration revision history for applicable changes.

Specification

  • If a calibration update for this fault code is available, the ECM calibration revision must be that revision or higher.

Linked Solutions

  • None

Repair

  • Prior to downloading the ECM calibration, check to see that all job images and all other troubleshooting has been documented as downloading an ECM calibration will remove the fault codes on the ECM.
  • Download the updated ECM calibration code.

Validation

  • Connect all components
  • Connect the recommended Cummins electronic service tool or equivalent.
  • Disable the fault code.
  • Operate the engine within the “Conditions for Clearing the Fault Code” found in the Overview section of the troubleshooting procedure.
  • Verify that the fault code is no longer active.
  • Check ECM Calibration Revision History
  • Use the recommended Cummins electronic service tool or equivalent to find the current ECM code and revision number in the ECM.
  • Compare the ECM code and revision number in the ECM to the calibration revisions listed in the ECM Calibration Revision History Database for applicable changes related to this fault code.
  • Refer to ECM Calibration Revision History Database.

If all steps have been completed and no root cause has been identified, then follow the technical escalation process.