Cummins ISX15 CM2250 (2010-12) Fault Code: 3151 PID: SPN: 4794 FMI: 31 Aftertreatment 1 SCR Catalyst System Missing- Condition Exists - EcuForce Truck (2024)

FAQs

What is the code FMI 31 on a Cummins SPN 4364? ›

This fault code indicates that the nox emissions are not being reduced enough by the SCR catalyst.

5655 is a derate fault and 3151is a fault that states that the SCR is missing. This is usually caused by a faulty outlet nox sensor in my experience.

2016 isx 15 code is 3567 aftertreatment diesel exhaust fluid valve. below normal or open circuit.

In summary, SPN 4364 FMI 18 is an engine error code related to the aftertreatment system of a diesel engine. It can indicate a variety of issues, ranging from a faulty NOx sensor to a malfunctioning DEF system. Symptoms include the illumination of the check engine light and potential engine derate mode.

FAILURE MODE IDENTIFIERS (FMI) Now that we have defined MID (The component) and PID (types of data), we can talk about Failure Mode Identifiers (FMI). Every diagnostic trouble code (DTC) that you find will have an FMI.

SPN stands for Suspect Parameter Number. It's a diagnostic trouble code that provides detailed information about specific faults detected by the vehicle's ECU, making it easier to identify and address issues within the vehicle's electronic systems.

Software and a diagnostic tool are generally needed for this. Using a code reader tool, connect to the ECM and find the “fault codes” tab. The displayed codes can generally be clicked on one by one. Another option is to select “erase all faults” and then follow the onscreen instructions.

A diesel particulate filter (DPF) differential pressure sensor measures exhaust backpressure and signals when the power-train control module (PCM) should begin a regeneration process to clear the filter of diesel particulate matter (DPM), or soot.

Malfunction Indicator Lamp (MIL) Lights up to warn the driver to schedule service soon. May light up in addition to other lamps. Red Stop Engine Lamp Indicates that engine must be stopped as soon as it is safe to do so.

A 12 valve is a 6 cylinder engine with one intake and one exhaust valve per cylinder. If you are specifically referring to the Cummins 12 valve (sometimes just called a “12 valve”) then it is also of note that it is an entirely mechanical engine. There are no computers.

What is fault code 3714 Cummins isx15? ›

Fault Code: 3714: Engine Protection Torque Derate – Condition Exists. Cummins Fault codes 3712 and 3714. If these fault codes are active, this means the engine performance is already reduced (power derate) and possibly the vehicle speed is also limited.

When error code P0449 appears, this indicates that the EVAP system vent valve solenoid is malfunctioning which results in hydrocarbons being expelled into the atmosphere and occasionally about the cabin.

Description This code sets when the Aftertreatment Control Module (ACM) detects that the Selective Catalyst Reduction (SCR) NOx Conversion efficiency is low.

The NOx sensor not only monitors the level of the oxides of nitrogen being released into the air, but it also plays an essential role in controlling it through the Selective Catalytic Reduction (SCR) system in diesel vehicles.

The inlet sensor measures the nitrogen oxide (NOx) levels in the exhaust before it passes through the SCR and reports this data to the ECU. Based on this, the ECU determines how much DEF the doser should inject into the exhaust gas.

The SPN 23 FMI 31 code indicates that the engine is not receiving the proper amount of fuel. This can be caused by a variety of issues, including a clogged fuel filter, a faulty fuel pump, or a problem with the fuel injectors.

SCR NOX conversion measures the efficiency of this process, calculated by the Engine Control Module (ECM) via inlet and outlet NOX sensor readings. High conversion rates signify effective emission reduction, while low rates indicate issues needing attention.

Cummins ReCon® NOx sensors are the smart, low-cost replacement choice to help keep your engine's aftertreatment system operating normally. When a NOx sensor fails it can prompt multiple fault codes; capping the engine output, placing it in limp mode. 1.