What does FMI 31 mean?

SPN 521049/FMI 31 Description This Code Sets When There is a Code Present for the Diesel Exhaust Fluid (DEF) Tank Level, DEF Dosing Unit, DEF Pump, NOx Sensors, Blocked DEF Line, DEF Quality, NOx Efficiency, Selective Catalyst Reduction (SCR) Harness and/or SCR Sensor.

What is the FMI 12 code?

An FMI 12 code will tell us that the module or a component that is monitored by this module has gone bad and needs replaced . Data Communication errors are usually going to come from issues in CAN communication.

What is the code spn 1325 fmi 31?

SPN#1325, FMI#31 ― Engine Misfire Cylinder 3 -- Condition Exists.

What is the fault code SA 11?

SA 11 refers to the engine control module (ECM) as the source address . If the sensor is disconnected, it is possible that the ECM will not receive any signal from the sensor, leading to the fault code being triggered.

What is the FMI failure mode indicator?

Failure Mode Indication (FMI), as part of the J1939 standard used in heavy-duty vehicles, functions by closely monitoring system components . When a fault occurs, FMI generates a precise code that identifies the specific nature of the issue, much like an advanced version of a 'check engine' light.

What is the difference between SPN and FMI?

SPN stands for Suspected Parameter Number which tells you the circuit where the fault occurred . For example, if you had a SPN 1791 code, it would point to a fault detected in the EGR Valve Control Circuit. FMI stands for Failure Mode Indicator which tells you the reason the fault code was set.

What is the code spn 1326 fmi 31?

SPN#1326, FMI#31 ― Engine Misfire Cylinder 4 -- Condition Exists -- Continued.

What is the code 1322 31?

SPN 1322 FMI 31 - Misfire - Multiple Cylinders Fault sets when Engine Control Module (ECM) determines there is a balance difference between cylinders. Malfunction Indicator Lamp (MIL) will illuminate when this fault is detected during two consecutive drive cycles.

What is the code SPN 1324 FMI 31?

SPN#1324, FMI#31 ― Engine Misfire Cylinder 2 -- Condition Exists -- Continued. 10) and run at idle. 6. Loud engine knock occurs.

The FMI-8 is a multiplexer featuring eight RTS compatible four-wire intercom ports with keypanel data, Ethernet ports for OMNEO, along with serial data links on DB9 connectors for communication between intercom matrices and auxiliary devices.

What is the fault code SA 160?

Fault Code 160: Service Brake Switch .

What is the engine code for the FMI 31?

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.

What does FMI stand for in fault codes?

FMI stands for failure mode identifier —this part of the fault code tells you what type of problem your truck has. For example, in the fault code SPN 3226 FMI 13, the SPN number 3226 tells you the problem is with the SCR outlet NOx sensor and FMI 13 tells you that the signal from the part is unavailable.

What is fail 31 on Cummins?

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

How to get cummins out of derate?

When your truck is under Derated, you have to do the following step by FCAR truck scanner if there is not physical part failure: Go Diesel Engine, select Cummins, it will show couple DPF/DEF/Aftertream related codes. ... Under Cummins main menui, selction Action Test to find Forced Regen Option to start Forced Regen. More items...

Cummins ISX11.9 CM2250 (2010-12) Fault Code: 1659 PID: SPN: 1328 FMI: 31 Engine Misfire Cylinder 6- Condition Exists

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Circuit Description
An algorithm in the ECM calibration monitors engine speed as each injector fires while the engine is at idle. If a cylinder has high or low contribution to engine speed, this fault will become active. The intention of this fault is to assist in troubleshooting performance complaints such as engine misfire and low power.

Component Location
The ECM is located on the intake side of the engine.

Conditions for Running the Diagnostics
This diagnostic runs continuously when the engine coolant temperature is greater than 71?C [160?F].

Conditions for Setting the Fault Codes
If cylinder 6 has high or low contribution to engine speed, this fault will become active.

Action Taken When the Fault Code is Active
The ECM illuminates the amber CHECK ENGINE lamp and/or the Malfunction Indicator Lamp (MIL) immediately when the diagnostic runs and fails.

Conditions for Clearing the Fault Code
To validate the repair, start the engine and let it idle for up to 5 minutes.
The fault code status displayed by INSITE? electronic service tool will change to INACTIVE immediately after the diagnostic runs and passes.
The ECM will turn off the amber CHECK ENGINE lamp after the diagnostic runs and passes.
For On-Board Diagnostic (OBD) engines, the ECM will turn off the 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
If Fault Code 1659 is inactive in the ECM memory and there is no complaint such as ?low power? or ?engine misfire?, it is possible that an intermittent event, such as air entering the fuel system, following a filter change caused the fault. Inactive counts of Fault Code 1659 should be disregarded unless other performance symptoms are present. The engine coolant temperature must be greater than 71?C [160?F] before this diagnostic will run.

Causes of cylinder misfire can include:

Valve lash out of specification (compare actual valve lash to reset limits)
Cylinder malfunction (check for high blowby when the engine is loaded)
Valve malfunction or valve held open (listen for intake valve ?chirping? noise in the intake)
Cylinder head or gasket malfunction (look for signs of oil, coolant, or casting flash in the intake or exhaust passages)
Extreme camshaft wear (inspect the camshaft lobes for wear)
Extra, missing, or damaged sealing washer under an injector
Injector malfunctions (?swap? injectors to see if the problem ?follows? the indicated injector).
Check air compressor timing (if engine has had fault since new or has had a recent air compressor replacement).

Possible Cause:
1) Cylinder Misfire failure
2) ECM calibration

Categories Cumminz, DTC TRUCKS, ISX11.9 CM2250 (2010-12)Tags 1328, 1659, 2010-12, 31, 6-, CM2250, Code, Condition, Cummins, Cylinder, Engine, Exists, Fault, FMI, ISX11.9, Misfire, PID, SPN

Cummins ISX11.9 CM2250 (2010-12) Fault Code: 1659 PID: SPN: 1328 FMI: 31 Engine Misfire Cylinder 6- Condition Exists - EcuForce Truck (2024)

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