Medium and Heavy Trucks

Have truck repair questions? Ask an Expert

Ask an Expert,
Get an Answer ASAP!

I have a 2012 Freightliner M2 with Cummins engine ISB 6.7,

Customer Question
the diagnosis code SPN 3251...
I have a 2012 Freightliner M2 with Cummins engine ISB 6.7, the diagnosis code SPN 3251 After treatment 1 DPF different ial Pressure | FMI=0 - Data Valid But Above Normal Operational Range- Most Severe Level 1. I already washed the DEF filter, I already changed the DEF pressure sensor, and I already changed the Rocker Switch but the code does not clear. As soon as I turn the key and put the power the diagnose code turns on. What should I do to resolve this problem.
Submitted: 7 months ago.Category: Medium and Heavy Trucks
Show More
Show Less
Ask Your Own Medium and Heavy Trucks Question
Answered in 2 minutes by:
12/26/2017
Technician: cumminsdr, Mechanic replied 7 months ago
cumminsdr
cumminsdr, Mechanic
Category: Medium and Heavy Trucks
Satisfied Customers: 3,854
Experience: All types of Cummins applications
Verified

What is the engine serial number?

Ask Your Own Medium and Heavy Trucks Question
Customer reply replied 7 months ago
serial #73254686
Technician: cumminsdr, Mechanic replied 7 months ago

​​With this fault you need to remove the DPF filter from the exhaust and have it inspected and cleaned in the DPF cleaning machine. If its not damaged it can be reused once clean. As well check for a reason the DPF became plugged, Bad turbo or injectors? If you have excessive smoke with the DPF out of the exhaust system there may be an upstream issue.

Below is the process that needs to be taken to clear the active fault. It is best to have Cummins do this because you need their INSITE program to reset the ecm. Please don't forget to Rate/Accept my service.

  • Clean or replace the aftertreatment DPF.
  • Use INSITE electronic service tool to perform the Diesel Particulate Filter Reset procedure found under the Aftertreatment Maintenance section of Advanced ECM Data.
  • After completing a stationary regeneration and no additional fault codes become active, the repair has been validated.
  • Continue to run the regeneration until the soot load in the aftertreatment DPF has dropped to the normal level.

CodesReasonEffect

Fault Code: 1922
PID(P): S324
SPN: 3251
FMI: 0

Aftertreatment Diesel Particulate Filter Differential Pressure - Data Valid But Above Normal Operating Range - Most Severe Level. The soot load of the aftertreatment diesel particulate filter (DPF) has exceeded the recommended limits. Engine protection derate is enabled.

Severe engine derate.

Possible causes of this fault code include:

  • The aftertreatment wiring harness or the aftertreatment temperature sensor connector pin installation may be incorrect.
  • The engine has been operating in a light load condition that prevents exhaust temperatures from being high enough to actively regenerate the aftertreatment DPF.
  • A possible base engine malfunction that causes excessive black soot to be generated.
Ask Your Own Medium and Heavy Trucks Question
Customer reply replied 7 months ago
is it possible for you to send me diagrams for the temperature sensors to know which is which , and what is the voltages for the sensors
Technician: cumminsdr, Mechanic replied 7 months ago

There would be temp faults along with this fault if that was the issue, You cannot read the voltage as it is calculated by the ecm . The ECM monitors the voltage on the signal pin and converts this to a temperature value. Aftertreament Inlet/Outlet temp are on the canister INLET IS first OUTLET is second Those 2 are for the DPF The red line is the DPF INLET and the yellow is the OUTLET. in the pic

Ask Your Own Medium and Heavy Trucks Question
Technician: cumminsdr, Mechanic replied 7 months ago

Hi , Just following up. Please don't forget to Rate/Accept my service.

Ask Your Own Medium and Heavy Trucks Question
Was this answer helpful?

How JustAnswer works

step-image
Describe your issueThe assistant will guide you
step-image
Chat 1:1 with a technicianLicensed Experts are available 24/7
step-image
100% satisfaction guaranteeGet all the answers you need
Ask cumminsdr Your Own Question
cumminsdr
cumminsdr
cumminsdr, Mechanic
Category: Medium and Heavy Trucks
Satisfied Customers: 3,854
3,854 Satisfied Customers
Experience: All types of Cummins applications

cumminsdr is online now

A new question is answered every 9 seconds

How JustAnswer works:

  • Ask an ExpertExperts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional AnswerVia email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction GuaranteeRate the answer you receive.

JustAnswer in the News:

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.

What Customers are Saying:

Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help.

Mary C.Freshfield, Liverpool, UK

This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!!

AlexLos Angeles, CA

Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult.

GPHesperia, CA

I couldn't be more satisfied! This is the site I will always come to when I need a second opinion.

JustinKernersville, NC

Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around.

EstherWoodstock, NY

Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know.

RobinElkton, Maryland

He answered my question promptly and gave me accurate, detailed information. If all of your experts are half as good, you have a great thing going here.

DianeDallas, TX

< Previous | Next >

Meet the Experts:

Daniel Wilson

Daniel Wilson

2,803 satisfied customers

Owner at DJ Wilson

Cat Man

Cat Man

Cat Engine Expert

4,530 satisfied customers

I am ASE Master Truck Certified.

Wayne

Wayne

Journeyman

2,892 satisfied customers

worked on, Gmc, Macks, Freight liner,Mercedes Benz,,Ford, sterling

Jeremy

Jeremy

Certified Truck/Bus Technician

2,243 satisfied customers

ASE Med/HD Truck Technician, NATEF Diesel Engines and Electrical/Electronics Technician, EPA 608/609 HVAC Certified, Steering/Suspension and ABS/Brakes Technician

cumminsdr

cumminsdr

Mechanic

3,854 satisfied customers

All types of Cummins applications

Curtis B.

Curtis B.

Technician

991 satisfied customers

Technician turned service manager on multiple lines of trucks and engines, used in industry.

dieseldan55

dieseldan55

Contractor

74 satisfied customers

Road Service mechanic for Volvo Construction.

< Previous | Next >

Related Medium and Heavy Trucks Questions
2009 Freightliner Columbia 1FUJA6CK79DAH6829 with Series 60
2009 Freightliner Columbia 1FUJA6CK79DAH6829 with Series 60 getting: SPN 3251 FMI 1 and SPM 3609 FMI 21 DPF Inlet Pressure SensorWhich sensor is this?… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
2,803 satisfied customers
I have two codes for my 09 peterbuilt with a cummins isx one
I have two codes for my 09 peterbuilt with a cummins isx one is a son 3251 fmi 0 the other is a spn 5298 fmi 18, I had the doc and dog cleaned tested and repaired, replaced the first temp sensor probe… read more
cumminsdr
cumminsdr
Mechanic
High School or GED
3,854 satisfied customers
We have a 08 sterling acterra with a cummins isc315 has
we have a 08 sterling acterra with a cummins isc315 has check engine light will not rev above 1500 rpms says ecu 128 SID 068 PID 111 SPN 3251 spn 111 spn 5018 we replaced the coolant level sensor it s… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
2,803 satisfied customers
I'm getting a sid 324 fmi 2, sid 324 fmi 0, sid 328 fmi 2,
Hi, I'm getting a sid 324 fmi 2, sid 324 fmi 0, sid 328 fmi 2, sid 328 fmi 4..All are undefined..Can you help me out please? … read more
cumminsdr
cumminsdr
Mechanic
High School or GED
3,854 satisfied customers
I have a freightliner cascadia Vin 1fujglbg2dsbx2662 isx
I have a freightliner cascadia Vin 1fujglbg2dsbx2662 cumming isx serial # ***** I gor a falt code spn 321 fail 0 and then a falt code spn 3251 fail 0. With a stop engine red lite . I have to go to Cum… read more
cumminsdr
cumminsdr
Mechanic
High School or GED
3,854 satisfied customers
I have a 2013 Cascadia with 5 diagnostic falt in dash. Spn
I have a 2013 Cascadia with 5 diagnostic falt in dash. Spn 102 fail 18 spn 5319 fail. 31 spn 5298 fail 17 spn 3556 fail 18 spn 3251 fail 0. Truck Vin 1fujglbg2dsbx2662 engine serial number 79561243 Cu… read more
cumminsdr
cumminsdr
Mechanic
High School or GED
3,854 satisfied customers
I have spn 3251 and spn 1569 on. Both my diagnostic and
I have spn 3251 and spn 1569 on. Both my diagnostic and check engine light on. They keep coming on and off. What does this mean … read more
cumminsdr
cumminsdr
Mechanic
High School or GED
3,854 satisfied customers
2011 Freightliner, ISB spn 3251 FMI 6, cummins insite will
2011 Freightliner, ISB spn 3251 FMI 6, cummins insite will not allow regen because ecm detects condition. Replaced sensor, repaired burned wiring, cleaned dpf, reset maintenance.… read more
Roy
Roy
shop foreman
Associate Degree
4,342 satisfied customers
2009 freightliner cummins j1708 eng just had exh filter
2009 freightliner cummins j1708 eng just had exh filter cleaned but cant clear the 324 &380 to make the truck go more then 10mph any ideas? … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
2,803 satisfied customers
Have a 2009 business class m2 cummins with engine protect
have a 2009 business class m2 cummins with engine protect light on. getting a pid code 324… read more
cumminsdr
cumminsdr
Mechanic
High School or GED
3,854 satisfied customers
I'm working on a 2009 kenworth the t 270 with a px-6 200
I'm working on a 2009 kenworth the t 270 with a px-6 200 engine. It's got engine codes 627. 3251. And 4795. What do these codes mean and what can I do to get it running. The VIN is 2NKHHM6X19M259375… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
2,803 satisfied customers
I am working on a 2011 Ford F650 with a cummins ISB 6.7 240.
Hello. I am working on a 2011 Ford F650 with a cummins ISB 6.7 240. Scanned truck and came up with spn 3246, spn 4364, and a spn 3251 fault codes. can you give me possible causes of these fault code a… read more
cumminsdr
cumminsdr
Mechanic
High School or GED
3,854 satisfied customers
DR.Cummins I have a Pete 04/12 Vin 1XP-WP4EX-6-DD192170 ISX
DR.Cummins Good Morning! I have a Pete 04/12 Vin 1XP-WP4EX-6-DD192170 ISX 15 ESN(###) ###-####It came in last week in shutdown mode from Regen issues. We forced a Regen and cleared all codes. It left … read more
cumminsdr
cumminsdr
Mechanic
High School or GED
3,854 satisfied customers
2012 Freightliner M2, Cummins ISB ser. # ***** shuts
2012 Freightliner M2, Cummins ISB ser. # ***** shuts down. Engine injector metering rail 1 pressure code SPN 157, FMI 18. What do we do?… read more
Roy
Roy
shop foreman
Associate Degree
4,342 satisfied customers
Dr Cummins we have a freightliner m2 partybus at the
Dr Cummins we have a freightliner m2 partybus at the shop that came with amber and red engine lights .engine is cummins isl and there are 2 codes presented at the time of inspection 1: egr out of cali… read more
cumminsdr
cumminsdr
Mechanic
High School or GED
3,854 satisfied customers
2009 Freightliner m2 106 business class cummins isb 240 Check
2009 Freightliner m2 106 business class cummins isb 240 Check engine lights on codes are as follows. Active -1 Egr 1 valve 1 control 1 HDS J1939-ch1 SPN 2791-FMI 13 Inactive -2 AFT 1 DPF Differential … read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
253 satisfied customers
Hello, 08 Freightliner M2 code 128 on dash and fault aftertreatment
Hello, 08 Freightliner M2 code 128 on dash and fault aftertreatment 1 particulate trap differential pressure code pulled with prolink iq can you help? Thanks Chris… read more
cumminsdr
cumminsdr
Mechanic
High School or GED
3,854 satisfied customers
I have a code spn 3251, fmi 16, fault is aftertreatment 1 particulate
I have a code spn 3251, fmi 16, fault is aftertreatment 1 particulate trap differential pressure. Fmi description is data valid but above normal opera aping range- mortally severe level. This is on a … read more
cumminsdr
cumminsdr
Mechanic
High School or GED
3,854 satisfied customers
Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Show MoreShow Less

Ask Your Question

x