Medium and Heavy Trucks

Have Truck Repair Questions? Ask an Expert

Ask an Expert,
Get an Answer ASAP!

Medium and Heavy Trucks

I need help with two codes that have just appeared on my

Customer Question
Hi I need help with...
Hi I need help with two codes that have just appeared on my truck!? I have a 2013 KW engine: CUMMINGS ISX.
JA: Sometimes things that you think will be really complicated end up being easy to fix. The heavy truck mechanic I'm going to connect you with knows all the tricks and shortcuts.
Customer: the codes are: 4340 FMI 5. ACTIVE
JA: Are you fixing your truck yourself? What have you tried so far?
Customer: THE NEXT ONE IS: Code 1569 FMI 31 Active
JA: Anything else you want the truck mechanic to know before I connect you?
Customer: Yes. I'm fixing myself. I have cleaned the SCR FILTER. and cleaned the Intake Manifold sensor
Submitted: 1 year ago.Category: Medium and Heavy Trucks
Show More
Show Less
Ask Your Own Medium and Heavy Trucks Question
Customer reply replied 1 year ago
I have a 2013 KW Tractor Trailer, with CUMMINGS ISX ENGINE.
I have two active codes: 1)Code 4340 FMI 5 . ***** *****ght.
and 2) Code: 1569 FMI 31. ***** *****ght.
I have already cleaned the SCR DEF exhaust filter. Also have cleaned the Intake Manifold sensor.
Please, I need to know what the codes are indicating are the problems, and also give me an answer on how to fix what needs to be fixed. Thank you
Answered in 50 minutes by:
11/5/2016
Technician: go-west.., Technician replied 1 year ago
go-west..
go-west.., Technician
Category: Medium and Heavy Trucks
Satisfied Customers: 1,257
Experience: Technican with 20 years experience focused on engines and electrical.
Verified
Good evening
Can I get your engine serial number please?
Ask Your Own Medium and Heavy Trucks Question
Customer reply replied 1 year ago
Yea. Hold one please
Customer reply replied 1 year ago
I don't have on me....is that extremely necessary? Be a use then I would have to go at trucks parking place to get it...I'm trying to get answers on what's wrong on my engine because of the two codes in ***** *****ght I current have. Codes 4340 FMI 5, 1569 FMI 31. Please help
Customer reply replied 1 year ago
Hello?
Technician: go-west.., Technician replied 1 year ago

sorry for the delay

4340-5 is def line heater number 1 open circuit

1569-31 means you are in derate

#1 line heater is at the tank

let me know if i can help you further

Ask Your Own Medium and Heavy Trucks Question
Customer reply replied 1 year ago
Is the DEF heater a gauge? If not, Does it need to be replaced for the code to go away? Is anything else needs to be fixed or cleaned besides the heater?
And the other code? Been derate is because of DEF line heater?
Customer reply replied 1 year ago
Is the DEF LINE HEATER INSIDE TANK? Or at the back of it?
Technician: go-west.., Technician replied 1 year ago
The def line number 1 goes from the def pump to the tank, what's going on here is the line is wrapped in wire, that is used to thaw the def if it freezes, the lines typicaly are labelled 1 2 3 etc, with a paper tag, but number one goes from the pump to the tank and the wire to number 1 def line is corroded someplace, inspect and let me know how you do.
Ask Your Own Medium and Heavy Trucks Question
Customer reply replied 1 year ago
If I send you serial number can you help me locate exactly where the def pump is? So I can find the line 1? Please, I'm a mechanic and even I am having trouble finding it
Technician: go-west.., Technician replied 1 year ago
We will get it
Were you put the def ontop is were the lines are 1 and 2 if you trace these lines they will take you to the def pump, these lines have connectors at the end of them, the labels that identifies the line is usually by the connector, let me know how you do,
Ask Your Own Medium and Heavy Trucks Question
Customer reply replied 1 year ago
This is what I found behind the DEF TANK:
1- Temperature sensor wire
2- pressure line wire
3- flow line
4- suction line
That's all I could identify from the DEF tank to the Pump like you mentioned, I only have the "Temperature Sensor Wire" (described above). I've also checked all the wires above and connectors that are covered with wire/heating protection metal. Everything is ok, nothing corroded. I've also checked all the fuses at the box where the relays are also located. (See relays question below)
So, about the code that said its "line 1" ...what do I do now?
Also, I have a relay located in front of the Windshield washer reservoir that says C1 Line right on the side of that another Relay that says C3 after treatment power.
That's all the lines I found with tags.
Are those relays connected with the DEF?
What do I do next ? I need to find the problem for the codes I sent you Originally.
Technician: go-west.., Technician replied 1 year ago
I'm going to need that engine number plzz
Ask Your Own Medium and Heavy Trucks Question
Customer reply replied 1 year ago
Engine number 79549533
Please help w questions below:
DEF TANK:
1- Temperature sensor wire
2- pressure line wire
3- flow line
4- suction line
That's all I could identify from the DEF tank to the Pump like you mentioned, I only have the "Temperature Sensor Wire" (described above). I've also checked all the wires above and connectors that are covered with wire/heating protection metal. Everything is ok, nothing corroded. I've also checked all the fuses at the box where the relays are also located. (See relays question below)
So, about the code that said its "line 1" ...what do I do now?
Also, I have a relay located in front of the Windshield washer reservoir that says C1 Line right on the side of that another Relay that says C3 after treatment power.
That's all the lines I found with tags.
Are those relays connected with the DEF?
What do I do next ? I need to find the problem for the codes I sent you Originally.
Customer reply replied 1 year ago
I also noticed a wire coming out of tank and going to pump, that is the heater wire. It could be that wire that you mentioned and how do I find out if Heater is working properly? How do I check
Technician: go-west.., Technician replied 1 year ago

now that i have you esn i see you have a aftertreatment control module,looks like this

,https://www.dropbox.com/s/n6hu86pm4n6945w/images.jpg?dl=0

it has a big and a small connector

the wires for #1 line goes to the big connector the #1 line is the suction line that you discovered.

one wire goes to pin 1 at the acm module at the big connector,the other wire is switched power,

Ask Your Own Medium and Heavy Trucks Question
Customer reply replied 1 year ago
Could you please email me a electrical diagram/schematic for the Line you're talking below? Your ESPN Des was Incomplete.
Here's what you wrote, without finishing sentence...
"go-west..go-west..
Technician
now that i have you esn i see you have a aftertreatment control module,looks like this,https://www.dropbox.com/s/n6hu86pm4n6945w/images.jpg?dl=0it has a big and a small connectorthe wires for #1 line goes to the big connector the #1 line is the suction line that you discovered.one wire goes to pin 1 at the acm module at the big connector,the other wire is switched power,
Technician: go-west.., Technician replied 1 year ago
Ask Your Own Medium and Heavy Trucks Question
Ask go-west.. Your Own Question
go-west..
go-west..
go-west.., Technician
Category: Medium and Heavy Trucks
Satisfied Customers: 1,257
1,257 Satisfied Customers
Experience: Technican with 20 years experience focused on engines and electrical.

go-west.. 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

2,322 satisfied customers

Owner at DJ Wilson

Cat Man

Cat Man

Cat Engine Expert

4,247 satisfied customers

I am ASE Master Truck Certified.

Wayne

Wayne

Journeyman

2,640 satisfied customers

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

Jeremy

Jeremy

Certified Truck/Bus Technician

2,019 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

1,225 satisfied customers

All types of Cummins applications

Curtis B.

Curtis B.

Technician

813 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
2006 Hino with JO8E. Blows 115F hot air on pass side vents,
2006 Hino with JO8E. Blows 115F hot air on pass side vents, floor and defroster. Only getting 75-80F air temp on driver's side vents, floor and defroster. … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
2,322 satisfied customers
We put a new starter in and it still want engage the
we put a new starter in and it still want engage the cylinoid but the starter spins … read more
Curtis B.
Curtis B.
Technician
Associate Degree
813 satisfied customers
I replace dpf filters will it hurt anything if. I keep
I replace dpf filters will it hurt anything if. I keep driving it i been driving it like that for about 3 months… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
2,322 satisfied customers
Is the torque specs for the rocker arms and the jake brake
Is the torque specs for the rocker arms and the jake brake the same for a 6NZ and a C15 … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
4,247 satisfied customers
T-300 2006 is stuck in low range. T-300 #532012602. Checked
checked all the wireing and solenoids. the codes say the rt and lt joy sticks are not connected and the hyd drive pup not calibrated. the machine kicked into low then high a few times then stuck into low.we got it used and its never been able to run any attachments.it does not have high flow … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
2,322 satisfied customers
I have a cat c12 I have a issue where it sounds like I have
I have a cat c12 I have a issue where it sounds like I have air in my fuel things I done replaced all fuel lines suction and return fuel regulator transfer pump fuel lines from pump to ecm fuel lines … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
4,247 satisfied customers
How do I take off that connection in that wiring indicated
How do I take off that connection in that wiring indicated in the pic. First time I have run into that type of clip and I don't want to break anything.It goes to a DEF metering unit of EPA10 Freightli… read more
Curtis B.
Curtis B.
Technician
Associate Degree
813 satisfied customers
Need to adjust clutch in 91 mac 200 flatliner. 91 mac 200 6
we put in new slave cylinder nrw master cylinder clutc pressure pale pilot bearing and throw out bearing … read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
2,640 satisfied customers
I have 2003 kw with a cummins isc 8.3. We are replacing the
I have 2003 kw with a cummins isc 8.3. We are replacing the caps fuel pump. It's my understanding that we need tdc on #1 cyl. Engine has alignment marks on fuel pump gear and outer cover has tdc mark … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
2,322 satisfied customers
What is the main difference in benefit between a forced
What is the main difference in benefit between a forced regen and a parked regen?Aftertreatment issues is not allowing a parked regen to finish although it starts. Will a forced regen complete it. I b… read more
Roy
Roy
shop foreman
Associate Degree
3,921 satisfied customers
I have an eaton FRO16210C transmission in a 2005
i have an eaton FRO16210C transmission in a 2005 international 9400i with a c15 cat engine. the problem is the transmission will not shift back down into the low side. Shifter is hung in the high side… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
2,640 satisfied customers
I have a 2010 Columbia with Detroit engine. Getting SPN 3480
I have a 2010 Columbia with Detroit engine. Getting SPN 3480 fmi 1. Dozer fuel pressure. I replaced the dozer injector two weeks ago. I didn't replace the entire assembly, just the block. I didn't run… read more
Roy
Roy
shop foreman
Associate Degree
3,921 satisfied customers
I have a 2012 Freightliner Cascaida and we're experiencing
Hi, I have a 2012 Freightliner Cascaida and we're experiencing some issues with the DEF light. The truck turns on both check engine lights and the DEF light flashes. We pulled codes from the dealershi… read more
Roy
Roy
shop foreman
Associate Degree
3,921 satisfied customers
My regen an check engine lights came on. I stop to fuel and
My regen an check engine lights came on. I stop to fuel and my red stop engine came on before I can move. I use the dash board info and was referred to see owners mannual. Please help. … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
2,322 satisfied customers
At start up the 2006 Freightliner sometimes the air pressure
At start up the 2006 Freightliner sometimes the air pressure will not build up past 60psi,even at higher rpm's.Other times it gets up to 100psi at idle. … read more
Roy
Roy
shop foreman
Associate Degree
3,921 satisfied customers
Jeremy, I have a 2008 Mitsubishi fuso 4 cyl. after you drive
hi Jeremy, I have a 2008 Mitsubishi fuso 4 cyl. after you drive it for 30- 40 miles it has a pending code of p0401 (egr insufficient) and a p1441 (dpf temp 4 abnormal) I replaced the exhaust brake ( i… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
2,322 satisfied customers
I navistar maxforce13 serial j212835 i have this code
second opinion] i navistar maxforce13 serial j212835i have this code spn111-1 and spn111-2… read more
don
don
fleet superintendent
Vocational, Technical or Trade Scho
996 satisfied customers
I have a 2003 GMC c7500 that has no codes but when it starts
I have a 2003 GMC c7500 that has no codes but when it starts to reach highway speeds it drops into limp mode and a dash light that looks like a speedometer gauge at the top left of the dash comes on. … read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
2,640 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