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cumminsdr
cumminsdr, Mechanic
Category: Medium and Heavy Trucks
Satisfied Customers: 3544
Experience:  All types of Cummins applications
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2011 freightliner m2, cummins, spn 3031 - fmi 18 spn 4342 -

Customer Question

2011 freightliner m2, cummins,
spn 3031 - fmi 18
spn 4342 - fmi 5
spn 5246 - fmi 0
Vehicle in complete derate. Will not go over 5mph. Replaced heater control valve on def tank. What is next step?
Submitted: 11 months ago.
Category: Medium and Heavy Trucks
Expert:  cumminsdr replied 11 months ago.

What is your engine serial number?

Customer: replied 11 months ago.
I have VIN handy, will that work for you?
Customer: replied 11 months ago.
1FVACWDT2CHBS5937
Expert:  cumminsdr replied 11 months ago.

Yes your ESN is 73328002

Fault Code: 3261
PID: S254
SPN: 4342
FMI: 5/5
LAMP: Amber
Aftertreatment Diesel Exhaust Fluid Line Heater 2 Circuit - Current Below Normal or Open Circuit. Open circuit or short circuit to ground detected in the diesel exhaust fluid line heater 2.

Diesel exhaust fluid line heater 2 will be disabled

The aftertreatment diesel exhaust fluid controller detects that the line heater circuit is open or shorted to ground.

The aftertreatment diesel exhaust fluid line heater 2 is located on the return line between the diesel exhaust fluid dosing unit and diesel exhaust fluid tank.

Possible causes of this fault include:

  • Malfunctioning line heater relay
  • Malfunctioning line heater
  • Open circuit, short circuit to ground, or a blown fuse in the aftertreatment diesel exhaust fluid controller harness
  • Malfunctioning aftertreatment diesel exhaust fluid controller.
  • For intermittent power supply and datalink communication issues with Aftertreatment Components, it is highly recommended that the OEM Power Distribution Center fuses and relays be thoroughly checked for loose, missing or intermittent connections.

Fault Code: 3651
PID: S254
SPN: 3031
FMI: 18
LAMP: Amber

Aftertreatment Diesel Exhaust Fluid Tank Temperature - Data Valid But Below Normal Operating Range - Moderately Severe Level. The diesel exhaust fluid tank temperature is unable to reach its set point.

Diesel exhaust fluid injection into the aftertreatment system is disabled.

The aftertreatment diesel exhaust fluid temperature sensor is located in the diesel exhaust fluid tank

This fault code is set when the diesel exhaust fluid tank temperature has been at normal operating levels, but is no longer able to maintain the proper temperature, and is in danger of freezing.

This fault code can also set when heating of the diesel exhaust fluid lines, tank, or dosing unit, can not be achieved

This fault code can also set if heating of the aftertreatment DEF lines can not be achieved. Troubleshoot all line heater fault codes prior to Fault Code 3651.

Possible causes of this fault code include:

  • Blocked or restricted coolant flow to the diesel exhaust fluid tank heater
  • Disconnected or broken tank heater coolant supply hose
  • Malfunctioning or stuck closed diesel exhaust fluid tank heater control valve
  • Malfunctioning or stuck aftertreatment diesel exhaust fluid tank temperature sensor
  • Operation in extremely cold ambient conditions.
  • For intermittent power supply and datalink communication issues with Aftertreatment Components, it is highly recommended that the OEM Power Distribution Center fuses and relays be thoroughly checked for loose, missing or intermittent connections.

Conditions for Clearing the Fault Code

  • Turn the keyswitch to the OFF position for 2 minutes to allow the system to completely powerdown. Turn the keyswitch to the ON position.
  • The fault code status in INSITE electronic service tool will change to INACTIVE immediately after the system is able to adequately heat and the diagnostic runs and passes. If heating can not be completed, use the "Diesel Exhaust Fluid Doser System Heater Test" found under "ECM Diagnostic Test" in INSITE electronic service tool to command heating to the tank heater and all line heaters.

Fault Code: 3712
PID: P105
SPN: 5246
FMI: 0
LAMP: Red

Aftertreatment SCR Operator Inducement - Data Valid But Above Normal Operational Range - Most Severe Level. Critical SCR related fault codes have been active for an extended period of time and require immediate attention.

Immediate engine power derate. Vehicle speed will be limited to 8 km [5 miles] per hour.

The ECM detects that the engine has been operated for an extended amount of time with critical SCR faults active, and no repair action has been taken. This amount of time will vary, depending on which SCR faults are active.

Conditions for Clearing the Fault Code

  • This fault code will go inactive once all other active SCR related fault codes have been addressed. Refer to the appropriate fault code troubleshooting tree.
  • The ECM will turn off the red STOP ENGINE lamp after the diagnostic runs and passes.

This fault code is for information only, and indicates that an engine power derate and vehicle speed limit have been implemented in order to make sure that the critical SCR related fault codes that are presently active in the ECM are addressed as quickly as possible.

Customer: replied 11 months ago.
Where do I start? Which is most important?
Expert:  cumminsdr replied 11 months ago.

The first one I posted is the most important and the second is related to that, The 3 fault in information only and will go away when the others are corrected. Check the fuse box for the OEM under the hood on drivers side for blown fuses That is the most common cause

Expert:  cumminsdr replied 11 months ago.

This may help you too, If it gets too involved you may need the Cummins insite program to properly test and troubleshoot

Customer: replied 11 months ago.
Ok. Will test and get back to you shortly.
Expert:  cumminsdr replied 11 months ago.

Ok thank you

Customer: replied 11 months ago.
far so good. Starting to trace wires from def tank. Any other ideas or hints?
Expert:  cumminsdr replied 11 months ago.

If the relay and fuses are good, check the wires in the harness,

Inspect the aftertreatment DEF line heater 2 and aftertreatment DEF controller harness connections for the following:

  • Loose connector
  • Corroded pins
  • Bent or broken pins
  • Pushed back or expanded pins
  • Moisture in or on the connector
  • Missing or damaged connector seals
  • Dirt or debris on or in the connector pins
  • Connector shell broken
  • Wire insulation damage
  • Damaged connector locking tab.

Check the supply voltage.

  • Measure the voltage between the aftertreatment DEF line heater 2 SUPPLY pin and chassis ground.

Perform the following steps to check the circuit response.

  • Turn keyswitch ON, start engine, and allow the engine to idle for 1 minute.
  • read the fault codes.
  • Shut the engine down and repeat this process one more time to allow all diagnostic checks to complete.
  • If fault is still active than An open circuit or short circuit to ground has been detected in the aftertreatment DEF line heater 2.

    Replace the aftertreatment DEF line heater 2.
Customer: replied 11 months ago.
Any idea where it's located and what it looks liek? (line heater 2)
Expert:  cumminsdr replied 11 months ago.

The aftertreatment diesel exhaust fluid line heater #2 is located on the return line between the dosing unit and the diesel exhaust fluid tank. Its a physical plastic line there will be 3 its the middle one, And not a Cummins part. You would have to contact a Freightliner dealer for the line if needed.

Expert:  cumminsdr replied 11 months ago.

here is the best I can do for location

Expert:  cumminsdr replied 11 months ago.

Hi, Just following up, Do you need more assistance?Please don't forget to rate my service.

Expert:  cumminsdr replied 11 months ago.

Hi,Hope all went well, Just following up, Do you need more assistance?Please don't forget to rate my service.

Expert:  cumminsdr replied 10 months ago.

Please don't forget to rate my service.

Expert:  cumminsdr replied 10 months ago.

Please don't forget to rate my service

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