Hello everyone, wondering if anyone has gotten this code or has an idea what it can be? SPN 4374 FMI 14. I have a 2017 Cascadia DD15 with 600k miles
SPN 4374 FMI 14 code on a 2017 Cascadia with DD15
Discussion in 'Freightliner Forum' started by AlexD13, Sep 8, 2021.
-
-
Trucking Jobs in 30 seconds
Every month 400 people find a job with the help of TruckersReport.
-
9 times out of 10 it is a failed DEF pump. Before you replace remove and inspect/replace DEF pump filter.
AlexD13 Thanks this. -
-
Here's the diagnostic steps for the fault.
Attached Files:
Vitkouski and QUALITYTRUCK Thank this. -
-
Before you condemn the pump, check the pressure at the doser with a manual gauge. The pressure sensor is in the doser, and I've seen a truck where techs changed the pump twice, only to find out the sensor in the doser failed.
Vitkouski, AlexD13 and QUALITYTRUCK Thank this. -
-
Mine is leaking from the fitting where it connects to the def pump. I found a small clamp on this fitting is broken and loosing def pressure. Code I got is SPN 4374 FMI 14. My question is Can I just replace small plastic clamp on this fitting to stop the leak or do I have to replace the hole heater line?
Any suggestion will be greatly appreciated.Attached Files:
-
-
Unfortunately you need to replace the heater line.
ABiceRoads Thanks this.
Trucking Jobs in 30 seconds
Every month 400 people find a job with the help of TruckersReport.