DEF Pressure Does Not Respond
`
C4.4 Engines
[UENR0662]
AIR INLET AND EXHAUST SYSTEM
AFTERTREATMENT GP
C4.4 Engines
Diesel Oxidation Catalyst Has Low Conversion Efficiency
C4.4 Engines
Clean Emissions Module Has High Oxygen Level
C4.4 Engines
DEF Pressure Is High
C4.4 Engines
Codes that Inhibit Operation of Aftertreatment System
C4.4 Engines
DEF Tank Temperature Is High
C4.4 Engines
DEF Tank Temperature Is Low
C4.4 Engines
Diesel Oxidation Catalyst Has Incorrect Inlet Temperature
Show/hide table
| Diagnostic Trouble Codes | |||
|---|---|---|---|
| J1939 Code | CDL Code | Code Description
(code descriptions may vary) |
Comments |
| 5392-31 | E1370 (2) | Aftertreatment Diesel Exhaust Fluid Dosing Unit Loss of Prime | The Electronic Control Module (ECM) detects one of the following conditions:
DEF system pressure was not within the acceptable limits during priming. |
| Follow the troubleshooting procedure to identify the root cause of the problem. | |||
Show/hide table
| Troubleshooting Test Steps | Values | Results |
|---|---|---|
1. Check that the latest available software is installed and there are no applicable Technical Information Bulletins or Special Instruction documentation released A. Ensure that the latest software is installed on the engine ECM. B. Ensure that the latest software is installed on the Dosing Control Unit (DCU) If necessary, refer to Troubleshooting, "ECM Software - Install" for the correct procedure. C. Ensure all Technical Information Bulletins and/or Special Instruction documented for the issue and/or product are reviewed and followed. |
Software and Publications |
Result: The latest software is not installed. Repair: Install the latest engine ECM software and then install the latest DCU software. If necessary, refer to Troubleshooting, "ECM Software - Install" for the correct procedure. Start the engine and wait for 2 minutes. If the fault is cleared, return the engine to service. If the fault is still present, proceed to Test Step 2. Result: Applicable Technical Information Bulletin/Special Instruction publication is available. Repair: Review and follow instructions provided in the available publication. Result: The latest software is installed. Proceed to Test Step 2. |
2. Check for Associated Diagnostic Codes A. Connect to the electronic service tool. B. Use the electronic service tool to check for active diagnostic codes. Check specifically for diagnostic codes relating to the DEF system. |
Diagnostic codes |
Result: There are associated diagnostic codes. Repair: Troubleshoot the associated diagnostic codes. Refer to Troubleshooting, Diagnostic Trouble Codes or refer to Troubleshooting, Event Codes. Result: There are no associated diagnostic codes. Proceed to Test Step 3. |
3. Check the DEF Pressure A. Connect to the electronic service tool B. Start the engine. C. Allow the engine to run for at least 2 minutes whilst monitoring "DEF Pressure" on the electronic service tool. |
Gauge position |
Result: The DEF pressure is less than Repair: Troubleshoot the cause of low DEF pressure. Refer to Troubleshooting, DEF Pressure Is Low. Result: The DEF pressure is greater than Repair: Troubleshoot the cause of high DEF pressure. Refer to Troubleshooting, DEF Pressure Is High. Result: The DEF pressure is between Repair: Allow the engine to run for at least 2 minutes. If the DEF system primes successfully, and the 5392–31 E1370 (2) diagnostic is no longer active, return the engine to service. If the 5392–31 E1370 (2) diagnostic code is still active, contact the Dealer Solutions Network (DSN). |
Information System:
326F Excavator
Access Door and Cover Locations
C9.3 Tier 4 Final Engines
Water Pump
A New Filter is Available for the DEF Tank Adaptor for C7.1 Machine Engines {108H}
C9.3 Tier 4 Final Engines
Turbocharger
312F and 313F Excavator Machine System Specifications
Swing Motor
316F Excavator Machine System Specifications
Pilot Lines
316F Excavator Machine System Specifications
Fuel Lines
316F Excavator Machine System Specifications
Swing Motor
316F Excavator Machine System Specifications
Front Lines
415F2 IL Backhoe Loader Axles, Differentials and Brakes
Axle (Front) - Adjust
316F Excavator Machine System Specifications
Stick Cylinder Lines - Stick Lowering Control Valve
320D2 GC Excavator Machine Systems
Heating and Air Conditioning Unit - Remove and Install
Aftertreatment Fuel Pumps May Fail on Certain Stage IIIB M300D Wheeled Excavators {1256}
816K Landfill Compactor
Capacities (Refill)
Procedure for Installing the Migration Kits on 320E and 323E Excavators {1250}
307E2 Mini Hydraulic Excavator Machine Systems
Track - Connect
An Improved Hydraulic Tank is Now Used on Certain 374D and 390D Excavators {5056}
Improved Radiator Hoses and New Radiator Pipe Assemblies are Now Used on Certain 374F and 390F Excavators and Mobile Hydraulic Power Units {1380, 5057}
307E2 Mini Hydraulic Excavator Machine Systems
Load Control Valve (Boom Cylinder) - Remove and Install
Rework Procedure for the Boom Nose on Certain 313D2 LGP Excavators {6501}
320D2 GC Excavator Machine Systems
Control Module (Automatic Temperature Control Unit) - Remove and Install
320D2 GC Excavator Machine Systems
Track Carrier Roller - Remove and Install
307E2 Mini Hydraulic Excavator Machine Systems
Track - Separate
320D2 GC Excavator Machine Systems
Track Roller - Remove and Install