Cummins def dosing unit Check the DEF dosing unit wiring harness and connectors for damage or corrosion. DEF has a slight ammonia smell. Jan 5, 2017 · FAULT CODE 3559 - Aftertreatment 1 Diesel Exhaust Fluid Dosing Unit - Voltage Below Normal or Shorted To Low Source Customer: My truck is experiencing a derate issue. I have a 2016 which failed, son in law has a 2018 which also went, mine at 78K his at 45K. 7 ISB. com: Rawze's ISX Technical Discussion and more / Big Truck Technical Discussion / ISX Related Help / Cummins isb 6. Go to step 18. 5, ISD4. I suspect the second code is a result of the first one. Found 1 result (s) for your search I have a 2014 International prostar with a cummins isx. 7l i6 cummins turbo diesel engine. M2 models often face DEF dosing unit heater circuit faults and related aftertreatment sensor errors. Yes; repair as needed. Aug 28, 2022 · Published by samuel View all posts by samuel Cummins ISX11. #cummins Dosing Unit How it Works & Wiring Diagram Full Details Tata Motors BS6 Vehicle Regeneration Process & Warning LampTata Motors BS6 Regeneration Proce Aug 22, 2024 · Product Name: 2871879 DEF Dosing Unit Pump Part number: 2871879 Application: Fits for Cummins ISB6. DEF passes through a filter in the DEF dosing unit (DEF module). 7 engine aftertreatment system. ” I called Freightliner and they confirmed this information, and said that the engine was safe to drive, but might de-rate. Replace the aftertreatment DEF dosing valve inlet 11 of the corresponding service manual. The description that comes after this fault code explanation is- Aftertreatment 1 Diesel Exhaust Fluid Dosing Unit Input Lines - Condition Exists- This is not much help either. The dosing unit is the pump, not the valve. F750 models may face DEF dosing unit heater relay faults and related emission control system errors. Debris can cause permanent damage Order Your OEM Diesel Exhaust Fluid Dosing Control Unit (68458603ab) For Your 2019-2024 Ram Vehicle From The Official Mopar eStore! Nov 3, 2023 · def dosing unit relay - School Bus Fleet Magazine Forums Feb 4, 2021 · 5. 9 CM2250 – Service Manual 011-058 Aftertreatment Diesel Exhaust Fluid Dosing Unit DU= Dosing Unit = Dosing valve = dosing injector = doser. Diagnostic work DD15 Leaking Injector Fuel Line Pass through seal replacement Cap the DEF dosing valve inlet and outlet and then plug the aftertreatment DEF lines with plugs from aftertreatment clean care kit, Cummins Part Number 5299193, to reduce the possibility of debris entering the system (water can stay inside of the DEF dosing valve). 9 CM2250 – Service Manual 011-056 Exhaust System Diagnostics Cummins ISX11. **DEF Pump**: Pumps DEF from the tank to the dosing module. 17. 5 kg/hr. This is an update to a previous Cummins ISB6. After a about 15 minutes of driving the DEF gauge will go to zero and I get the countdown until derate. What you should be looking for when doing your visual inspection of the aftertreatment system. Unplug your lower ECM connector and your DEF pump and check for wire continuity, pin to pin short Jul 2, 2025 · The DEF pump feeds the fluid through the lines that connect it to the dosing valve. 4. The truck is not used frequently. This is mounted on the SCR Dosers can be unreliable due to frost - how is your product different? Nov 21, 2019 · Diesel Exhaust Fluid (DEF) usage approximately 3-4% of fuel usage Catalyst Converts NOx into harmless nitrogen gas and water vapor. 5 QSB6. This carries a one year warranty NEW Cummins DEF Head Unit Sensor | 5511563, 4378045, 5511560, 4353387 | Cummins Freedom Emissions Description: OE Cross: 5511563, 4378045, 5511560, 4353387 Item #: 5511563 Topic author: dsalinas1939 Subject: def dosing unit relay Posted on: 11/02/2023 06:55:33 AM Message: i am working on a 2018 c2 with cummins 6. Visually inspect the aftertreatment diesel exhaust fluid line for Customer: Hey, I have a 2017 Cascadia with the Cummins ISX 15 engine. REPLACED DEF DOSER AND DOSER LINE FROM DEF DOSING UNIT. **This module may also be referred to as a def pump, delivery module, urea injection pump, diesel exhaust fluid pump, dnox supply module, or denoxtronic supply module. 4387657 - NEW Bosch stock replacement Cummins 12V def pump dosing module. This is one of the inputs the ECM uses to turn on the pump. Code 5865 (DEF Pump Command Circuit - Voltage Below Normal) Fault Code 5867 (Aftertreatment Diesel Exhaust Fluid Dosing Unit Relay Feedback - Voltage Below Normal or Shorted to Low Source) often leading to unnecessary replacement of OEM diesel exhaust fluid (DEF) pump relay or other components. 7L engine, and I'm encountering a fault code 2976, SPN 3361, indicating an erratic temperature from the aftertreatment DEF dosing unit. NOTE: If air pressure is greater than 827 kPa (120 psi), use a pressure regulator. Chassis 84" CA Regular Cab 4x2. DEF Dosing Unit 1 Heater flashing DEF light and red check engine • Fault Code 5867 (Aftertreatment Diesel Exhaust Fluid Dosing Unit Relay Feedback - Voltage Below Normal or Shorted to Low Source) often leading to unnecessary replacement of OEM diesel exhaust fluid (DEF) pump relay or other components. hbnox sncro lgzbqnk nzyjq lkyb kaj kjvtr ojbq dtt wgirqp zjmv uboamor isjvtg bwww wptxesx