Fault Code: 3574

Aftertreatment 1 Diesel Exhaust Fluid Pressure - Data Valid But Below Normal Operating Range - Moderately Severe

Overview:

Codes

Fault Code 3574

SPN 4334

FMI 1/18

Lamp Amber

Reason:

Low diesel exhaust fluid pressure has been defected in The dosing valve.

Effect:

Engine power derate.

Circuit Description:

The Engine Control Module (ECM) provides a 5 voll supply and a ground to the aftertreatment diesel exhaust fluid pressure sensor The pressure sensor provides a signal to the ECM on the sensor signal circull. This sensor signal voltage changes based on the afferrealment diesel exhaust Huid pressure supplied by the dosing unit The ECM will detect a low signal voltage at low diesel exhaust fluid pressures and a high signal voltage at high diesel exhaust fluid pressures

Component Location:

The aftertreatment diesel exhaust fluid pressure sensar is internal to the allertreatment diesel exhaust fluid dosing valve and can not be serviced separately

The aftertreatment diesel exhaust fluid dosing valve is installed in the exhaust system II is mounted directly to the aftertreatment decomposition tube before the selective catalytic reduction (SCR) catalyst Installation position will vary based on the aftertreatment architecture and the original equipment manufacturer (OEM)

Conditions For Running The Diagnostics:

This diagnostic runs when diesel exhaust fluid dosing unit is fully primed and is actively maintaining diesel exhaust fluid pressure in the dosing system

Conditions For Setting The Fault Codes:

The Engine Control Module (ECM) detected the aftertreatment diesel exhaust fluid pressure was less than a threshold

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.

• Engine torque will be reduced if the engine is operated for an extended period of time with this fault active.

⚫ Engine torque will be severely reduced

⚫ Vehicle Speed will be limited to 20 km (12 mi) per hour after extended engine operation with the fault code active.

Conditions For Clearing The Fault Code:

• This fault code can not be cleared with the recommended Cummins® electronic service tool or equivalent.

. To validate the repair perform the 'Aftertreatment Diesel Exhaust Fluid Doser Pump Override Test' found under 'ECM Diagnostic Tests' in the recommended Cummins® electronic service tool or equivalent

⚫ The ECM will turn off the amber CHECK ENGINE lamp and/or MILimmediately after the diagnostic runs and passes.

Fault Code: 2963

Description:

Engine Coolant Temperature - Data Valid But Above Normal Operating Range - Least Severe Level

Overview:

Codes:

Fault Code 2963

PID(P): P110

SPN: 110

FMI: 0/15

Lamp: None

Reason:

Engine coolant temperature is above the engine protection warning limit.

Fault Code: 2963

Effect:

power derate Increasing in severity from time of alert

Circuit Description:

The coolant temperature sensor is a variable resistor sensor and is used to measure the temperature of the coolant of the engine. The engine control module (ECM) supplies 5 volts to the coolant temperature signal circuit. The ECM monitors the change in voltage caused by changes in the resistance of the sensor to determine the coolant temperature 

Component Location:

The engine coolant temperature sensor is located on the thermostat housing

Conditions For Running The Diagnostics:

This diagnostic runs continuously when the keyswitch is in the ON position or when the engine is running.

Conditions For Setting The Fault Codes:

The Engine Control Module (ECM) defected the engine coolant temperature was greater than 107°C (225°F)

Action Taken When The Fault Code Is Active:

• The ECM logs the fault code immediately when the diagnostic runs and fails.

Conditions For Clearing The Fault Code:

• To validate the repair, perform a key cycle, start the engine and let it idle for 1 minute.

• The fault code status displayed by the recommended Cummins® electronic service tool or equivalent will change to INACTIVE immediately after the diagnostic runs and passes.

• The "Reset All Faults' command in the recommended Cummins® electronic service tool or equivalent can be used to clear active and inactive faults, as well as extinguish the MIL for OBD applications.

Fault Code:1911

 Injector Metering Rail Number 1 Pressure -Data Valid But Above Normal Operating Range -Most Severe Level

Fault Code:4658

Aftertreatment 1 Diesel Exhaut Fluid Actual Dosing Quantity - Data Valid But Below Normal Operating Range - Moderately Severe Level

 Overview: Code: 4658                                                                              SPN: 4331                                                                                FMI: 1/18                                                                                                                                                                                                                                         Reason: Low aftertreatment diesel exhaust fluid flow detected   

Effect On Engine: Possible reduced engine perfomance                                                                                                                                                                               

                                                                                

Fault Code:272

 Engine Fuel Pump Pressurizing Assembly 1

Circuit - Voltage Above Or Shorted To High Source

Fault code:272

SPN:1347

FMI:3/3

                    

Reason: High Signal Voltage Or Open Circuit Is Detected At The Fuel Pump Actuator Circuit.

Effect On Engine: Engine May Run Rough.

May Stop Running.May Not Start,or May Be Deficult To Start.