#Spn 4374 fmi 0 software#
#Spn 4374 fmi 0 code#

#Spn 4374 fmi 0 code#

If you have a 2017 or n ewer F reightliner or W estern S tar truck one of the fault code s below may be tied to your derate issue. *Seek out a repair facility who can help you in the case you are limited to 5MPH. NOx Conversion fault codes - More details in this blog post about SCR NOx efficiency problems.Any other Aftertreament fault codes tied to DEF.EEC F ail 18 - Selective Catalyst Reduction Nox Conversion LOW.EEC Fail 1 - Selective Catalyst Reduction Nox Conversion Very Low.EEC 61 SPN 625 F ail 9 - ACM Not communicating with your MCM / CPC.EEC F ail 9 - ACM Not communicating with your MCM / CPC.ENG F ail 9 - ACM Not communicating with your MCM / CPC.If you drive with the following fault codes, you may enter a 5 MPH derate What fault codes will trigger this derate? Source 61 or EEC 61 (fault code detail).If you have any fault codes coming from this source address, then it is relaying information directly to your dashboard or your diagnostic scan tool. ACM regulates all the fault codes that are tied to your aftertreatment system.This module controls your DPF and your DEF system s.Located inside dash panel inside the ca b.Source 1 or EEC 01 ( fault c ode detail).CPC ties the MCM to your aftertreatment computers through a proprietary datalink.This module will regulate certain parameters with your vehicle ’ s speed and your cruise control.Source 00 or EEC 00 ( f ault c ode detail).MCM controls and regulates all your fuel, timing, EGR and emission components.Without this module your engine will not start. This is one of the most important components to your engine.Relays information on which module is generating the fault code you have.Western Star - All models that use this engine.Freightliner Trucks - All models that use this engine.

#Spn 4374 fmi 0 software#

E nsure your software program is up to date.Aftertreatment system n eeds to be updated by the manufacturer.Aftertreatment H arness R ubbed T hrough - This can cause random faults in your emission system.ACM (Aftertreatment Control module) Not P owered - This causes communication error s between CPC & MCM & ACM.These sensors measure how efficient your emission system is and will cause a derate conditio n if they are faulty or have incorrect readings. NOx Sensor Failure - NOx Inlet and NOx Outlet sensors are located on your 1box.If this pump fails, then you must replace it for the system to work properly. DEF Pump Failure - This is the heart of your system that pumps DEF fluid into the 1box.DEF Fluid Ran out - (Empty tank) - Refill as soon as possible.

Components that can cause a 55 MPH derate.

Once this happens you are racing against time before your truck limits you to 5 MPH.

25% Low P ower that limits you to only go 55 M PH.

When you are limited 55 MPH you can be confident that it is most likely due to your aftertreatment system. M ain culprit for this 55 MPH Speed Limit = O nset of a ftertreatment pr oblems The reason why F reightliner puts you into an engine derate or reduces your MPH is because they want you to correct the issue as soon as possible or damage may occur to your aftertreatment s ystem.

I am currently idling to see if this triggers the regen symbol.If your Freightliner DD13 DD15 won’t accelerate past 55 MPH there may be a few reasons as to why you are experiencing thi s issue. No regen symbol appears and I tried all the methods suggested in internet that I found. So, my question: how I can force regen the motor? (I was told that this may resolve the de rate problem). Perhaps this has contributed to the problem, but the MIL and check engine light came on (and the fault code) when the bar dropped to 2 before I put the DEF. I put DEF from love's pump rather than buying the bottled stuff. DEF gauge bar is full, but amber light flashing. It seems the wires are newer, so the sensors may be as well, but I have this problem:įault code EEC61 spin 5246, this just means the warning was ignored so the motor went to de rate. The problem is it's having DEF problem (I think) and the motor de rated on me (I forgot about this too).

I am now running on my own (well, not yet), with my own authority and a private broker and I just got my truck. I should have remembered what the guys here have said! But no, I forgot. Well, I got a 2012 FL Cascadia 125 with DEF DPF issues (I think). I thought I vowed to never post again, but I am in deep Sheep!