Medium and Heavy Trucks

Have truck repair questions? Ask an Expert

Connect one-on-one with {0} who will answer your question

Related Medium and Heavy Trucks Questions
I have a 2012 kenworth T270. I have a fault code 3651. 2012
Good evening, hi I have a 2012 kenworth T270 JA: Hi there. How can I help? Customer: I have a fault code 3651 JA: What's the make, model, and year of your car? Customer: 2012 kenworth T270 médium duty… read more
NicholasM1019
NicholasM1019
Diesel Technician
Vocational, Technical or Trade School
9 satisfied customers
I have a 2016 freightliner HDJE6489 the def tank is full but
I have a 2016 freightliner HDJE6489 the def tank is full but the yellow light is flashing that it is empty changed fluid ,sending unit, had filters cleaned reset everything performed aftertreatment sc… read more
Joe
Joe
Service Technician
Associate Degree
855 satisfied customers
Cummins QSF3.8 S/N 89921111 with DTC 3866 SPN 3364 FMI 1,
Cummins QSF3.8 S/N 89921111 with DTC 3866 SPN 3364 FMI 1, DTC 3714 SPN 1569 FMI 31 and DTC 3712 SPN 5246 FMI 0 error codes. Reduced engine functionality is present. DEF was low so refilled but no chan… read more
cumminsdr
cumminsdr
Mechanic
High School or GED
1,700 satisfied customers
We have a 2012 kenworth t3 series dtc 3651, 3714, 3429, 3712
We have a 2012 kenworth t3 series dtc 3651, 3714, 3429, 3712 Truck will not come out of derate If clear codes the only two codes that come back are 3714, and 3712 forced regen and tried to reset still… read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
208 satisfied customers
We have 2013 Freightliner with a Cummins ISB engine, it came
We have 2013 Freightliner with a Cummins ISB engine, it came in with a code for the def fluid temp erratic, unit also went into derate. All codes were inactive when it got to the shop, all codes clear… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
Def light on and bliking but almost full def tank now I am
Def light on and bliking but almost full def tank now I am being derated … read more
cumminsdr
cumminsdr
Mechanic
High School or GED
1,700 satisfied customers
I have two codes that are active 3712 and 3714, 2016
Hello I have two codes that are active 3712 and 3714 … read more
cumminsdr
cumminsdr
Mechanic
High School or GED
1,700 satisfied customers
2012 peterbilt vin 1XPHD49X3CD170041. Derated to 5mph 3
2012 peterbilt vin 1XPHD49X3CD170041. Derated to 5mph 3 active codes: 3597-active-amber-aftertreatment diesel exhaust fluid controller - abnormal update rate 3712-active-red-aftertreatment scr operato… read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
208 satisfied customers
1)-SAE Engine protection Tourqe Derate Condition - exist SPN
1)-SAE Engine protection Tourqe Derate Condition - exist SPN 1569 FMI 31 count 1 (2) SAE- Aftertreatment SCR Operator Inducment Severity-Data valid but above normal operating range-Most severe level S… read more
cumminsdr
cumminsdr
Mechanic
High School or GED
1,700 satisfied customers
3712 COUNT 1, 2) 3714 3) ENGINE DERATED TO 5 MPH 2014
3712 COUNT 1, 2) 3714 3) ENGINE DERATED TO 5 MPH 2014 CUMMINS 8.3 … read more
roybelding
roybelding
Shop Foreman Freightliner trucks
12,333 satisfied customers
I have a 32581 diesel exhaust fluid line heater 1 circuit.
I have a 32581 diesel exhaust fluid line heater 1 circuit … read more
cumminsdr
cumminsdr
Mechanic
High School or GED
1,700 satisfied customers
Regen Issue on a 2011 Pete 348 (vin:160507) with a Cummins
Regen Issue on a 2011 Pete 348 (vin:160507) with a Cummins ISC (esn:73333964). 123.9 miles ago Insite showed codes 3543 (NOx limits exceeded due to Insufficient Reagent Quality), 3582 (Aftertreatment … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
I have a 2012 Freightliner Cascadia in my shop with several
I have a 2012 Freightliner Cascadia in my shop with several def system faults 3232 2771 3712 3258 3425 3261 3714 2398 I have Cummins Insite software on my laptop where do I need to start looking to re… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
I have two fault codes that I can't get out of the active
I have two fault codes that I can't get out of the active status. First code is 3712 aftertreatment scr operation inducement-data valid but above normal operation range-most severe level Second code i… read more
cumminsdr
cumminsdr
Mechanic
High School or GED
1,700 satisfied customers
I have code 3712 and 3537 engine is detrate to 5mph ,
I have code 3712 and 3537 engine is detrate to 5mph … read more
roybelding
roybelding
Shop Foreman Freightliner trucks
12,333 satisfied customers
I have a f650 cummins 2011 have had all parts of def system
Hey I have a f650 cummins 2011 have had all parts of def system replaced and spent well over $16000 on the truck with def problems according to cummins the truck is in debate mode throwing code 5246 a… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
2011 freightliner m2, cummins, spn 3031 - fmi 18 spn 4342 -
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?… read more
cumminsdr
cumminsdr
Mechanic
High School or GED
1,700 satisfied customers
When a 3712 and 3714 fault code are triggered and an "engine
When a 3712 and 3714 fault code are triggered and an "engine power derate and vehicle speed limit" are implemented does that mean the truck will be limited to the "Active Maximum Speed" indicated in t… read more
cumminsdr
cumminsdr
Mechanic
High School or GED
1,700 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.

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

4,737 satisfied customers

Owner at DJ Wilson

Cat Man

Cat Man

Cat Engine Expert

5,234 satisfied customers

I am ASE Master Truck Certified.

Wayne

Wayne

Journeyman

4,023 satisfied customers

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

Jeremy

Jeremy

Certified Truck/Bus Technician

2,740 satisfied customers

ASE Med/HD Truck Technician, NATEF Diesel Engines and Electrical/Electronics Technician, Network Engineer specializing in CAN faults, Aftertertreatment, and vehicle communications

cumminsdr

cumminsdr

Mechanic

1,700 satisfied customers

All types of Cummins applications

Curtis B.

Curtis B.

Technician

1,571 satisfied customers

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

Chris (aka-Moose)

Chris (aka-Moose)

Technician

353 satisfied customers

24 years of experience diagnosing & repairing

< Previous | Next >

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