Freightliner acm code 520372. 2019 freightliner cascadia 113.

Freightliner acm code 520372 Ni No 2018 Freightliner Fault Code 4364 and 520372 NOx Sensor Issues Freightliner models often face recurring NOx sensor faults and related emissions system errors. Other than that, I'm not sure what to do. ACM 7. We tried to force regen it but it won’t. Casadia. 0518-1605 18-16 1 05 18-16 SUBJECT DATE SPN 5443 (ACM)(GHG17) and SPN 520372 (ACM)(GHG17) May 2016 Additions, Revisions, or Updates Publication Number / Title Platform Section Title Change SPN 5443/FMI 0 GHG17 DDC-SVC-MAN-0191 DD SPN 5443/FMI 15 GHG17 SPN 5443/FMI 16 GHG17 Added ACM 7. I am 250 mi away from home. Just Mechanic's Assistant chat Jun 13, 2016 · spn 520371 fmi 16 Discussion in ' Freightliner Forum ' started by AlexD13, Oct 18, 2021. I'm troubleshooting some aftertreatment codes on a 2018 Freightliner with DD15. Mechanic's Assistant: Is there anything else you would like the Truck Mechanic to Dec 8, 2023 · While driving from Houston to Odessa, where I plan to work hauling fracked sand, the truck threw a check engine light and a fault code related to the after treatment system (520372). 2020 freightliner cascadia vin lj0154 ac keep turning off on its checked pressure looks fine and 4lbs of r134. Nov 24, 2016 · 2017 Cascadia DD15 Nox Conversion Efficiency Very Low SPN 4364 Fmi 17 Discussion in ' Heavy Duty Diesel Truck Mechanics Forum ' started by Truckin4ever77, Jul 5, 2022. Mar 4, 2022 · A week ago, one of our 2020 Cascadia's with the DD15 and 516K miles popped 2 codes - 520372 16 and 3216 16. 520372 16? Freightliner cascadia 2018. SPN-520372 and SPN-520371 typically indicate issues with the vehicle’s electronic control modules or sensor communication faults. 520371-16. SCR closed loop at maximum limit. Is the ACM software level 9. Feb 26, 2025 · Detroit Diesel DD13 (2008–2009) Fault Codes Below is a comprehensive list of fault codes for the Detroit Diesel DD13, covering model years 2008–2009. For full diagnostic details, including troubleshooting steps, part numbers, wiring diagrams, and labor time estimates, visit Diesel Repair — your go-to resource for diesel diagnostics and repair documentation. 0? Yes; Go to step 6. txt) or read online for free. Check the ACM software level. WARNING: PERSONAL INJURY Diesel engine exhaust and some of its constituents are known to the State of California to cause cancer, birth defects, and other reproductive harm. Freightliner cascadia vin 3AKJHHDR1KSJX7949. No; Go to step 4. After diagnostic testing found the doser woul 2019 Freightliner Cascadia DD15: Diagnosing 520372. Feb 17, 2025 · Find fault codes and repair solutions for Detroit Diesel DD15 (2017-2020). Check for other emission-related fault codes. This Code Sets When the Aftertreatment Control Module (ACM) Detects Poor Selective Catalyst Reduction (SCR) NOx Conversion. No; update the ACM using the latest server information. Clearing the code after repairs and performing a system reset may resolve the issue. Have a code saying it has a high pressure discharge. I stuck somewhere between Detroit and Lansing MI. 71, and they conducted back-to-back SCR efficiency tests to achieve a LARMF of 1. - It's a 2017 Freightliner Cascadia. This truck had been setting codes 520372 and code 4364. Active code is SPN 520372 FMI 16 ( SCR closed loop control at max limit). ), or to establish a professional I have freightliner 2019 Freightliner. When did you first notice them? Customer: They just appeared about an hour ago while I was driving. Cluster shows Code No Eng and truck won’t start / Freightliner cascadia CPC4 failure internal inspection shortage high prices problems how to fix it Cascadia on and off! ACM module, Detroit DD13, DD15, and DD16. Nov 3, 2017 · Hey everybody Have a couple of ghg17 cascadias with Dd13s, throwing code 520372 fmi 16- Selective Catalyst Reduction Closed Loop Control at Maximum Freightliner vin MSMT3064. Truck derated to 5mph. It has active codes 4364 and 520372. Where diesel techs help other diesel techs with questions, advice, how-tos, and - sometimes - sweet, sweet karma. Have you completed all the necessary checks? Have you verified the DEF quality and quantity, checked for DEF deposits, and confirmed the NOx sensor functionality? Turn the ignition ON (key ON, engine OFF). The document outlines diagnostic tests and troubleshooting procedures for various SPN (Suspect Parameter Number) codes related to the Aftertreatment Control Module (ACM) and Selective Catalyst Reduction (SCR) systems. I noticed a warning light come on, and after checking the ACM, I found two fault codes: 520372 and 4331. Non Have a code saying it has a high pressure discharge. - I had it serviced yesterday, including a regeneration to clear some soot from the DEF filter, and now it won't go over 5 mph. Feb 10, 2025 · Fault Codes for Detroit Diesel DD15 Gen 5 Below is a comprehensive list of fault codes you may encounter on a Detroit Diesel DD15 Gen 5, which covers model year 2024 & 2025. Running the troubleshooting tree on the 4364. 16 Fault Code Cascadia DD15 often faces recurring fault codes and engine performance interruptions under heavy load conditions. Oct 1, 2024 · Exhaust Gas Recirculation (EGR) system faults like SPN 520372/FMI 16 are common in Freightliner trucks and can significantly impact engine performance. Check for multiple fault codes. I was out of town and wasn't able to hookup the Nexiq to it. 4364-17 Freightliner Cascadia. Customer: I have a 2020 Freightliner Cascadia 126. What's the issue! 2017 Freightliner dd15 motor. SCR CLOSED LOOP CONTROL AT MAX LIMIT. 1 ACM Software Version 7. Check the DEF dosing valve and level sensors for faults. In the two years I have owned the truck I have replaced 6 nox sensors, two wiring harness, just did the egr cooler, dpf filters, def doser, and now after I left the shop the code popped back on (spn-520372) after 100 miles and they're telling me is a doser valve. Selective Catalyst Reduction Closed Loop Control at Maximum Limit (Multiples Sources) In this video I am showing you a 2018 Freightliner Cascadia with a dd13. 2. 0 CPC Software Version R44_00_000A All affected units in this campaign will need their emission label replaced. May 4, 2024 · SPN 520372 FMI 16 Discussion in ' Freightliner Forum ' started by moriarty, May 4, 2024. Check the SCR NOx sensors and DPF pressure sensors for contamination or wiring issues. Here they are in SPN, FMI: 521049,31 ; 521052, 31 ; 521050, 31 ; 677, 31 ; 677, 5 ; 520372, 16 ; 4353, 5 ; 3363, 5 ; 4357,5 ; 5488,5 ; 4375, 5 ; 4355, 5. The ACM code 520372-16 typically indicates an issue with the Aftertreatment Control Module or related sensors. Scr input vs output temp Hi all. Detroit Cascadia ACM Common issues on ACM Harness Red mechanic 3. Start by checking DEF fluid quality and level, ensuring no contamination. Nov 6, 2020 · Freightliner cascadia dd15 fault 520342 fmi17 any idea? Discussion in ' Freightliner Forum ' started by Wes777, Nov 6, 2020. 1, but the fuel map part number level ZGS 003 is less than the minimum level of 004 and thus would require programming. No; Go to step 5. Third time this has happened Nov 5, 2019 · Freightliner cascadia dd15 fault 520342 fmi17 any idea? Discussion in ' Freightliner Forum ' started by Wes777, Nov 6, 2020. How can I reset the fault code to drive my truck home? Jun 12, 2023 · Find Freightliner fault codes and troubleshooting solutions in PDF format. Freightliner Cascadia 2018 DD15 SCR MU3 Function Fault Fix Cascadia DD15 often faces SCR system failures and recurring MU3 function fault codes during emissions checks. Get free wiring diagrams, part numbers, and troubleshooting guides. The original cause was stated to be DEF buildup, and the dealer performed a regeneration, but the code wouldn't reset. Went into trucks diagnostics on the dashboard. This code points to an issue with the controller or a component within the diesel exhaust fluid (DEF) system on your 2020 Freightliner Cascadia. ult codes. 0 ZGS 002 or greater? Yes; Go to step 4. Two codes pop out. 520372. Download the comprehensive guide for diagnostic and repair needs. 3. 500000. I have followed troubleshooting from Mitchell that directed me to replace I have the same codes. Click here for more information. T I have 3 codes ACM 520372-16. 2. 3 SPN 520372/FMI 14 - GHG17 Selective Catalyst Reduction Closed Loop Control at Maximum Limit (Timeout) Table 2. Customer: I received code 520372 FMI 16 on my 2017 Freightliner Cascadia with a DD15 engine. The fault code is 4364 with FMI 17. 17 Mechanic's Assistant: What’s the make, model, and year of your truck? What type of engine does it have? Customer: It’s a 2019 Freightliner Cascadia with a DD15 motor. Are any other fault codes present? Yes; repair those fault codes first. 0 software check SPN 520372/FMI 16 GHG17 DiagnosticLink users: Please update the troubleshooting guides Description: See document J1939-73 for SPN details. No Connect DiagnosticLink ®. Refer to section "Removal of the Soot Sensor" . Nov 1, 2012 · The following TSB (s) may apply to your 2017 Freightliner 114sd. The LARMF reading was 0. Freightliner Customer: I'm getting codes 520372 and 520371, and the yellow engine light is on in my 2019 Freightliner Cascadia. SPN 520372 indicates a Detroit Diesel sensor or communication fault. Start with looking at all the fault codes, begin a parked regen Cascadia SCR closed loop DTC 520372Causes Bad battery Def doser Def filter Software updates MCM2. 16 fault code. 16 fault code on a 2019 Cascadia DD15 typically indicates sensor or wiring issues related to the engine control module (ECM). I understand that you're experiencing an issue with a 2021 Freightliner Cascadia, which is displaying an active code SPN 520372 FMI 16 following a failed regeneration for SCR park efficiency. It includes detailed steps for diagnosing issues such as poor NOx Codes SPN 520372 and SPN 520363 typically indicate sensor or communication faults in the engine control module. 54K subscribers Subscribe 2 mos Steven John Iler SCR maximum closed loop limit is the 520372 not a code you wanna have Jun 13, 2016 · SPN 520349 FMI 14 Discussion in ' Freightliner Forum ' started by AlexD13, Mar 28, 2023. The next cause identified was a failed outlet NOx sensor, which they replaced. 1 FAULT CODE GHG14 520282 3 520282 4 520282 5 520287 9 EDU Dosing Valve Signal Failed High EDU Dosing Valve Signal Failed Low EDU Dosing Valve Signal Failed Open ACM DM1 Message Not Received at Dash Cluster Mar 17, 2025 · Detroit Diesel DD5 (2017-2020) fault codes, troubleshooting tips, and repair solutions to keep your truck running smoothly. Additionally, there are codes 520371 and 520372, both with FMI 16. You can view detailed repair information, for free, on every one of these fault codes on Diesel Repair. 7. It doesn't reach a sufficient temperature on its own, and there's excessive idling. The worst one seems to be the 520372 code which has 277 counts Dec 14, 2024 · Certain DETROIT™ GHG17 DD13®engines installed in Pierce vehicles require reprogramming to a minimum of the software versions and fuel maps listed below. Non Detroit Diesel DD13, DD15 fault codes for DPF, DOC, SCR, Catalyst replacement needed. Inspect soot sensor for excessive soot. b If only SPN 520349/FMI 14 is present, Go to step 3. 16 Fault code and 520371. There is also an inactive code SPN 4364 FMI 17 ( SCR NOx conversion efficiency. Oct 19, 2023 · Hello - My truck is having issues. Code 520372 FMI 16 indicates a Diesel Exhaust Fluid (DEF) system fault, often caused by sensor failures or injector leaks. Also i got SPN 520372/16 fmi 14. 2018 Freightliner Cascadia: Diagnosing SPN-520372 and SPN-520371 Codes Cascadia models often face sensor faults and communication errors causing engine warning codes. SPN_520371_520372_ACM_1129-16 - Free download as PDF File (. 56. It has two orange check engine Auto-elevate is not required for this ACM update to work properly. 2019 freightliner cascadia 113. a Yes; repair those fault codes first. Start by scanning the ECM for active codes, then inspect wiring harnesses and connectors for damage or corrosion. 8. 1. Any advice on what to do I just got fault code SPN 520372 Check engine light it’s on Freightliner Cascadia driver seeking advice on fault code SPN 520372 and check engine light issue Part 1 2017 Freightliner dd15 -code spn 520372 fmi 14 Caint Git Rite exp 331 subscribers Subscribed Feb 22, 2025 · The Detroit Diesel DD13, covering model years 2021 to 2022, continued to evolve with enhanced diagnostics, improved emissions performance, and better overall efficiency for medium- and heavy-duty trucks. Built for reliability and ease of maintenance, the DD13 during these years featured GHG 2021-compliant systems, optimized fuel injection, and powerful onboard fault detection. Mechanic's Assistant: I'm sorry to hear that you're experiencing these codes on your 2019 Freightliner Cascadia DD15. Fault codes 520372 and 520365 typically indicate issues with the DEF dosing or SCR system sensors. Using DiagnosticLink ®, check for any outlet NOx sensor communication or voltage fault codes. 0 software with fuel map ZGS Version Table 8. Is that accurate? I am providing the code descriptions and testing procedures for SPN 520372. I have a 2015 Cascadia Daycab. Fault number 520372 FMI 16. SPN 520372 FMI 16. 2019 Freightliner Cascadia DD15. Are any of the following faults present: SPN 4331/FMI 15, SPN 3216/FMI 16, SPN 520372/FMI 14 or SPN 5841/FMI 14? 2017 Freightliner Cascadia SPN 520372 Fault Code Diagnosis Cascadia models often face sensor faults and communication errors causing engine derate or warning lights. 520372 spn fault code name is Manufacturer Assignable SPN. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc. I paid Freightliner Aftertreatment Pump Speed Code Issue Explained Aftertreatment pump speed errors and recurring fault codes often affect Freightliner diesel exhaust systems. These systems Dec 6, 2022 · Freightliner Code SPN 3226 FMI 20 The funny thing about modern engines is that when a certain code comes up, the affected part will determine which company will fix the problem. Is the ACM software level lower tha Yes; update the ACM software to the latest available on the server. 4. The 520372. 520372 16 and 5841. SPN 5841 FMI 14 and SPN 520372 FMI 16 codes indicate aftertreatment system sensor faults causing engine derate and regen failure. Other fault codes may result in excessive soot build-up. For complete diagnostic information — including fault code explanations, part numbers, wiring diagrams, and labor times — visit Diesel Repair, the all-in-one platform for diesel engine maintenance and repair. Stopped at the rest area. Fault codes 4364 mode 17 and 520372 mode 16 indicate NOx sensor circuit issues despite a new outlet NOx sensor. Check engine lights and def blinking. Part 2- 2017 Freightliner dd15 code spn 520372 fmi 14 Caint Git Rite exp 335 subscribers Subscribe I really hate this fault code, SCR closed loop can come up for many different reasons and it is important to know what to look for. Jul 5, 2020 · SPN-520372 16 CASCADIA 2017 Discussion in ' Heavy Duty Diesel Truck Mechanics Forum ' started by Fudo. Inspect sensor inputs like temperature or pressure sensors for faults. For example in Figure 5, the MCM software meets the minimum required of 6. All dealerships are closed till Tuesday. 60. I have attached the pics. Mechanic's Assistant: Are you repairing your truck on your own? What steps have you taken so far? Customer: No. 14. International and Isuzu trucks , International, Maxxforce, Cummins and Isuzu engines, Diagnostic and electrical troubleshooting specialist , Hvac and truck /trailer refrigeration troubleshooter I just got the truck out of the shop and I am getting code 520372-16 Code, freightliner Cascadia 2020, no just the code Mar 8, 2025 · Detroit Diesel DD16 (2021–2023) Fault Code Below is a comprehensive list of fault codes for the Detroit Diesel DD16 covering model years 2021–2023. All of the software for the ACM, PCM, and MCM is up to date. Truck is in derate mode, code is 520372 ( scr closed loop control at maximum limit). One small issue like 520372 can cause a larger component to become damaged without taking the time to investigate. Customer: Hello, I have a 2021 Freightliner M2 with a DDEC16-DD5 engine. I was hoping a freigtliner tech could help me sift through to the root issue. Jul 10, 2023 · Make: Detroit Engine: DD15 GHG17 (2017 & Newer) PID: N/A SPN: 521002 FMI: 14 Description: DT12 Automatic Mode not Available Troubleshooting: POSSIBLE CAUSES: Transmission Control Module (TCM), Aftertreatment Control Module (ACM), Motor Control Module (MCM), or Common Powertrain Controller (CPC) need updating. Freightliner cascadia 2019 Detroit. Perform the repair verification. Begin by scanning the engine control module for related fault codes. Have I noticed any changes in the truck's performance or any other issues besides the yellow engine light? Oct 19, 2023 · SPN 570371, SPN 520372 & SPN 523002 Discussion in ' Freightliner Forum ' started by sonnyca, Nov 16, 2024. 520372, 520371 could it be a nox sensor? My truck is a freightliner Cascadia 2019. DERATE with fault codes 520372, 521052, 521050, 521049 2 SPN 3216/FMI 16 - GHG17 Engine Out NOx Sensor Drifted Low Aug 20, 2018 · Customer: Acm code 4364. he Freightliner aftertreatment code, I was having a issue with pump speed i rapper it, now a different code come back Customer: - I encountered fault codes SPN 520372 and SPN 520342, and my truck won't exceed 5 mph. 2019 freightliner vin last 6 KJ4969 showing codes ACM 520371, 520372, 520365. Inspect the air dryer and check for leaks in the compressor valves. Diesel Repair also includes other information such as fault code to part number, wiring diagrams, parts cross Diagnostic Code: SPN 520372 FMI 14 DD15 Motor. Freightliner 2020 cascadia. are level. Any idea what could go wrong In this video I am replacing the DEF doser and the acm. MCM Software Version 6. - The engine is a Detroit Diesel. Let’s explore what causes this issue and how to resolve it. DuPage, Aug 31, 2020. 0. I have code spn 520372 fmi 14 showing and I've derated to 55mph. Freightliner Cascadia 2015. Customer: I have a freightliner cascadia vin 3AKJHHDR0JSJJ3948 with a pile of aftertreament codes. Check wiring harnesses for damage or loose connections near the ACM. Also when Freightliner cascadia vin 3AKJHHDR1KSJX7949. Jun 4, 2023 · Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube. I filled up the DEF about eight hours ago, and from what I found online, it seems to be related to DEF. DERATE with fault codes 520372, 521052, 521050, 521049 Get the Detroit Diesel DD13, DD15, DD16 GHG17 Engine Troubleshooting Manual in downloadable PDF format on your PC, Mac, tablet or phone within minutes -- no wait! Deep discounts, fast & friendly service and secure checkout. Has the truck experienced any of the following Closed Loop Faults? SPN 520371 / FMI 16 SPN 520372 / FMI 14 SPN 520372 / FMI 16 No Software updates can be made at the customer’s expense. Codes 520355, 520372, and 520371 indicate air compressor faults often caused by valve leaks or pressure sensor failures. ACM fault codes 520372 and 4331 typically indicate issues with the Aftertreatment Control Module or DEF system. Cascadia air compressor issues include intermittent code 520355 and recurring codes 520372 and 520371. I got these ACM codes and engine light just after getting wash last evening. 6. This includes engines with test emission labels AND engines with certified emission labels. Tried regen twice, nothing Tried reset codes shutting power for 15min and codes are still there Customer: I have a permanent SCR closed loop control code at maximum limit (520372). 452KDisclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. If you don't take the time to look into 520372 spn fault when it arises, it can add up quickly. Remove the soot sensor. How to clear the SCR closed loop at maximum limit SPN 520372 FMI 16 fault code. SPN 520372 is a fault code associated with the Aftertreatment Diesel Exhaust Fluid Controller 1 - indicating a malfunctioning intelligent device or component. These faults can cause the engine to derate or increase DEF usage as the system compensates for inaccurate readings. Jul 25, 2012 · How screwed am I? Discussion in ' Freightliner Forum ' started by Hazardous, Oct 19, 2020. Code 520372 fmi 16. My truck is deleted 55 mph Sep 5, 2020 · Hi folks, Today two engine lights, stop eng and def blinking pops up on my Cascadia 2017 390k mi. If this fault code is ignored long enough it will trigger DEF inducement DEF 2019 Freightliner Cascadia DD15: Diagnosing 520372. Please contact your Detroit Distributor for a quote. Turn the ignition ON (key ON, engine OFF). 57. pdf), Text File (. Is the ACM software level 7. FREIGHTLINER CASCADIA BestWest Star Trucking 291 subscribers Subscribe Customer: I have codes 521049 31 and 521052 31 on my 2019 Freightliner Cascadia indicating an aftertreatment problem detected. There are 3 ACM codes (3216, 520372 & 5841). I haven't experienced any other issues with the truck; the light just came on about 30 minutes Freightliner 2017 Cascadia, 520372 Fmi 16,That information is not useful; driving in the city is detrimental to the AFT system. This is a fault that sets when the after treatment system has an abnormal reading of DEF consum The MCM and ACM fuel map part number ZGS levels must meet the MINIMUM requirements. If the fault returns, Go to step 4. Are there any aftertreatment system fault cod Yes; diagnose the other fault codes. My DPF regeneration is functioning properly, but there's just a yellow engine light on. aovshl vtb vcley rbood hcbjdc hqrzm ndmr oqwonzk pbdps sduh fdajs lmu vnu spt frvyjsu