This Cummins EGR fault 3136 document is a troubleshooting PDF for Fault Code 3136, covering the Engine Exhaust Gas Recirculation Outlet Pressure Sensor Circuit. It explains a voltage above normal or shorted-to-high condition at the EGR orifice pressure sensor signal circuit, with ECM actions, diagnostic conditions, and repair validation steps.
Official Cummins EGR fault 3136 document details
| Brand | Cummins |
|---|---|
| Model coverage | ISX11.9 CM2250 and ISX15 CM2250; file group also lists ISB6.7 CM2250 (2010-12) / DTCs |
| System/Group | Engine Exhaust Gas Recirculation Outlet Pressure Sensor Circuit / DTCs |
| Publication no. | 4022250; 2883445 |
| Year/Revision | Last Modified: 11-Jun-2010 and 20-Jul-2010 |
| Pages | 14 |
| File size | 0.2 MB |
| Format | |
| Language | English |
Document table of contents
- Overview
- Circuit Description
- Component Location
- Conditions for Running the Diagnostics
- Conditions for Setting the Fault Codes
- Action Taken When the Fault Code is Active
- Conditions for Clearing the Fault Code
- Shop Talk
- Associated Procedures
- Troubleshooting Steps
- Guided Step 1 – Check the fault codes.
- Guided Step 2 – Check the EGR orifice pressure sensor and circuit.
- Guided Step 3 – Check the ECM and engine harness.
- Guided Step 4 – Check ECM calibration and clear fault codes.
Applicable truck models
The extract identifies this procedure for ISX11.9 CM2250 and ISX15 CM2250 engines, with associated ECM, ECM Calibration Code, Engine Wiring Harness, and EGR Orifice Pressure Sensor procedures. The supplied file information also places the PDF in the Cummins ISB6.7 CM2250 (2010-12) DTCs group, but the visible procedure text names ISX11.9 CM2250 and ISX15 CM2250 for this Engine Exhaust Gas Recirculation Outlet Pressure Sensor Circuit fault. For official engine and service information, visit Cummins.
Who needs this Cummins EGR fault 3136 manual
This manual is useful for diesel mechanics, fleet technicians, and workshop owners diagnosing an amber CHECK ENGINE lamp or MIL linked to SPN 5019 FMI 3. It supports structured checks with INSITE™ electronic service tool, connector inspection, voltage measurement, ECM response testing, harness repair decisions, and ECM calibration review.
The diagnostic logic states that the ECM supplies 5 volts and ground to the EGR orifice pressure sensor, then monitors signal voltage that changes with pressure. Fault Code 3136 sets when the ECM detects EGR orifice pressure sensor signal voltage greater than 4.75 volts for 5 seconds, causing the ECM to estimate EGR orifice pressure, close the EGR valve, and potentially reduce engine torque after extended operation with the fault active.
The guided steps cover checking Fault Code 386, confirming whether Fault Code 3136 is active or inactive, inspecting EGR orifice sensor connector pins, testing circuit response, checking 4.75 to 5.25-VDC supply voltage, inspecting ECM connector pins, checking for pin-to-pin short circuits on the SIGNAL wire, and deciding when to repair the engine harness or request authorization to replace the ECM. The final section checks whether an ECM calibration update is available and then disables and clears the fault code after the specified clearing conditions are met.
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