in the past i could be able to porches all my needed parts from longhorn at Austin Tx in addition to advice and help from their service department. I get code 520372 FMI 16。2017 freightliner casacadia DD15. Engine exhaust is toxic. Always start and operate an engine in a well ventilated area. MID 190 Air Conditioner Subsystem Fault Codes. SPN 1322 FMI 14 Engine Misfire for Multiple Cylinders : Special Instructions SPN 1322 FMI 31 Engine Misfire for Multiple Cylinders : Condition Exists SPN 1323 ‐1328 FMI 31 Engine Misfire Cylinder #1‐ #6 : Condition Exists This test can identify cylinder misfires during a road test where the engine is under load. Dave Dobraski 26 posts since Sep 17, 2015. 2 Humidity Levels in Freon REFRIG MOISTR REFRIG Moistr. This spn fmi codes help explain the underlying meaning of the numerical components which build an engine fault code. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features Press Copyright Contact us Creators. Fuel Rail Pressure too low SPN 520268 code. SPN 520372 / FMI 16 - SCR closed loop at maximum limit fault. Category: 120000 EXTERIOR LIGHTING Summary: Service Bulletin for Marker Light Gasket Leaks, Cascadia. If MCM SPN 625/FMI 9 is present, troubleshoot and repair the CAN line. One thought on “ Detroit Diesel Engines Fault Codes List ” faramarz hedayatifar 29/11/2020. SPN 520372/FMI 16 Description The Fault Indicates High DEF Delivery Monitored Parameter NOx Conversion Efficiency Typical Enabling Conditions Closed Loop DEF Dosing Monitor Sequence None Execution Frequency Always Enabled Typical Duration Two Seconds Dash Lamps MIL Engine Reaction None Verification Parked SCR Efficiency Test Check as follows: 1. Detroit Diesel Engines Fault Codes List. Dave Ricks 5 posts since Sep 24, 2015 Soot in tail pipe Aug 31, 2020 3:16 PMI have Code 520349 FMI 14 DPF Filtration Efficiency Low. com >Please help to get home:(. Fault number 520372 FMI 16. (520372) (16)>SCR closed loop control at maximum limit. 2 SPN 520371/FMI 16 - GHG17 Selective Catalyst Reduction Closed Loop Control at Maximum Limit (Multiples Sources) Table 1. I dont think u are going to be able to clear it without the detroit software Click to expand I read the same. National Highway Traffic Safety Administration. Category: 120000 EXTERIOR LIGHTING Summary: Service Bulletin for Marker Light Gasket Leaks, Cascadia. 3 SPN 521050/FMI 31 - GHG17 DEF Inducement SEL Lamp Active Table 2. Dont forget to Subscribe! - https://goo. SNP-520371 & 520372 FMI-16 Technician: TomcM28 Thank you! Ill look those up and get back to you directly. A procedure has been added for inspection, repair, and replacement of damaged or spun rivet nuts. 2016 Freightliner Cascadia Technical Service Bulletins. If the one box is new and the doser unit is new you should have them do a DEF. Two new codes are showing up: SPN: 520372 FMI: 16 (High-to Moderate Severity) Count:1 SPN:520371 FMI:16 (High-to Moderate Ask an Expert Car Questions Truck Repair RichardH416, Resident Tech 211 Satisfied Customers Expert RichardH416 is online now Continue Related Medium and Heavy Trucks Questions. Filters have failed, sometimes they will NOT show signs of damage or visible soot trails on outlet of substrate. 520371 16 SCR closed loop control at maximum limit (Multiples Sources) 520372 16 SCR closed loop control at maximum limit 520372 14 SCR closed loop control at maximum limit (Timeout) 520378 0 Aftertreatment Temperature not plausible 520381 2 Diesel Oxidation Catalyst Inlet Temperature Signal not plausible. DETROIT DETROIT FAULT CODE: SPN: 520372 FMI: 16 GHG17 SELECTIVE CATALYST REDUCTION CLOSED LOOP CONTROL AT MAXIMUM LIMIT DESCRIPTION The fault indicated High DEF Delivery. Soot in tail pipe Aug 31, 2020 3:16 PM I have Code 520349 FMI 14 DPF Filtration Efficiency Low. A crack in internal baffles of 1-box will cause other codes including nox conversion coding, so I would rulethat out in your case. National Highway Traffic Safety Administration. 2020 dd16 derate with first code 520372/16 spf/fmi. Please select ALL of your current, valid driver’s licenses. 520371 16 SCR closed loop control at maximum limit (Multiples Sources) 520372 16 SCR closed loop control at maximum limit 520372 14 SCR closed loop control at maximum limit (Timeout) 520378 0 Aftertreatment Temperature not plausible 520381 2 Diesel Oxidation Catalyst Inlet Temperature Signal not plausible. spn 520372/fmi 16 Description The Fault Indicates High DEF Delivery Monitored Parameter NOx Conversion Efficiency Typical Enabling Conditions Closed Loop DEF Dosing Monitor Sequence None Execution Frequency Always Enabled Typical Duration Two Seconds Dash Lamps MIL Engine Reaction None Verification Parked SCR Efficiency Test Check as follows: 1. MONITORED PARAMETER NOx Conversion Efficiency. Should I get 16 ply steers even PermanentTourist posted May 2, 2023 at 7:45 PM. Reprogramming and emission label replacement corrects various fault code issues such as SPN: 1636, FMI: 16 - CAC Efficiency Low, SPN: 2659, FMI: 0 - EGR Flow Target Error, and SPN: 520372, FMI: 16 - SCR Closed Loop Control At Maximum Limit. DD15 Troubleshooting – Section 76. 1 SPN 973/FMI 9 This fault is typically the J1939 EBC1 (Engine Brake Switches) is missing. This bulletin replaces the version dated June 17, 2019. DescriptionThis Code Sets When the Diesel Exhaust Fluid (DEF)Pump Speed is Higher than Normal For a Given DEFPressure FYIThe code 4374/0 on this unit was caused by a cracked (faulty) DEF tankheader, as it was sucking air. Diesel engine exhaust and some of its constituents are known to the State of California to causecancer, birth defects, and other reproductive harm. SPN 520371/FMI 16 Description The Fault Indicates High DEF Delivery Monitored Parameter NOx Conversion Efficiency Typical Enabling Conditions Closed Loop DEF Dosing Monitor Sequence None Execution Frequency Always Enabled Typical Duration Two Seconds Dash Lamps None Engine Reaction None Verification Parked SCR Efficiency Test Check as follows: 1. Ask Your Own Medium and Heavy Trucks Question The VIN #1fujgldrxhlhz9723 SPN-523001 FMI-13 SPN-3251 FMI-20. Does that mean Ihave an internally cracked 1box between the DOC and the SCR?. SPN 520372/FMI 16 Description The Fault Indicates High DEF Delivery Monitored Parameter NOx Conversion Efficiency Typical Enabling Conditions Closed Loop DEF Dosing Monitor Sequence None Execution Frequency Always Enabled Typical Duration Two Seconds Dash Lamps MIL Engine Reaction None Verification Parked SCR Efficiency Test Check as follows: 1. Does that mean I have an internally cracked 1box between the DOC and the SCR? Nick Guraluick 19 posts since Mar 14, 2016. 4 Solenoid, Freon Control Flow RFRG FLOW CTRL RFRG Flow Ctrl. If operating an engine in an enclosed area, vent the exhaust to the outside. - This is not a comprehensive list, or an alternative to the standard fault diagnostic process and only serves as a supplemental reference. TYPICAL ENABLING CONDITIONS Closed Loop DEF Dosing. Understanding DTC codes and DTC meanings. PDF Soot in tail pipe I have Code. Turn the ignition ON ( key ON, engine OFF). EXECUTION FREQUENCY Always Enabled. Help with 6 Cascadia dd15 2016 Codes 523530 524011 524011 790 …. Two new codes are showing up: SPN: 520372 FMI: 16 (High-to Moderate Severity) Count:1 SPN:520371 FMI:16 (High-to Moderate Ask an Expert Car Questions Truck Repair RichardH416, Resident Tech 211 Satisfied Customers Expert RichardH416 is online now Continue Related Medium and Heavy Trucks Questions. 520372 is a scr closed loop limit fault. When the engine returns to idle, turn the ignition off and wait for all themodules to power down (usually about one minute). PDF FIELD SERVICE CAMPAIGN BULLETIN. FIELD SERVICE CAMPAIGN BULLETIN. I have also got soot in the tail pipe offthe 1box. 520372 is a scr closed loop limit fault. Use DiagnosticLink to clear the code. SPN 1322 FMI 14 Engine Misfire for Multiple Cylinders : Special Instructions SPN 1322 FMI 31 Engine Misfire for Multiple Cylinders : Condition Exists SPN 1323 ‐1328 FMI 31 Engine Misfire Cylinder #1‐ #6 : Condition Exists This test can identify cylinder misfires during a road test where the engine is under load. SPN 520371 FMI 16. Communication Number: WI20-008, Date: 2020-04-27. gl/XtV9CJCheck out our Merch! - https://thedieseler. Freightliner Codes Spn 521242 Recipes. I have also got soot in the tail pipe off the 1box. closed loop control at maximum limit. SELECTIVE CATALYST REDUCTION CLOSED LOOP CONTROL AT MAXIMUM LIMIT DESCRIPTION The fault indicated High DEF Delivery. Check the DEF quality by using the refractometer from the DEF Test Kit W060589001900 to measure the DEFpercentage. com>Detroit Diesel Engines Fault Codes List. Fault number 520372 FMI 16. Auto Mechanic 1,128 satisfied customers Specialities include: Auto Body Technician, Heavy Equipment Repairs, Heavy Duty Engine Repairs, Brake and. DescriptionThis Code Sets When the Diesel Exhaust Fluid (DEF)Pump Speed is Higher than Normal For a Given DEFPressure FYIThe code 4374/0 on this unit was caused by a cracked (faulty) DEF tankheader, as it was sucking air. SPN 520371 FMI 16. There is a software update to correct issues with this code. Turn the ignition on (Key ON / Engine OFF) and wait oneminute, then start the engine and run a Parked SCR efficiency test. If the one box is new and the doser unit is new you should have them do a DEF quantity test, the measured amount shouldnt be less than 120ml. The ACM module controls the DOC, DPF, DEF, SCR operations. Freightliner Fault Codes list (MID, PID, SID, FMI). Freightliner cascadia DD13 DD15 DD16 Emissions derate bypass 5 miles per hour SCR DEF light blinking Francisco Amaya 263K views 4 years ago SCR closed loop Alrey Industries Top Tech Diesel 19K. SCR closed loop control at maximum limit. SPN520372 SPN 16 SPN5298 SPN 14 Is this just bad DEF ####ong up with works or am I in for a serious bill? Hazardous, Oct 19, 2020 #1 + Quote Reply Trucking Jobs in 30 seconds Every month 400 people find a job with the help of TruckersReport. DETROIT DETROIT FAULT CODE: SPN: 520372 FMI: 16 GHG17 SELECTIVE CATALYST REDUCTION CLOSED LOOP CONTROL AT MAXIMUM LIMIT DESCRIPTION The fault. SPN 521049/FMI 31 Description This Code Sets When There is a Code Present for the Diesel. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright. Kind of looks like def pumps were being replaced under warranty without much extensive testing. The ACM module controls the DOC, DPF, DEF, SCR operations. Reprogramming and emission label replacement corrects various fault code issues such as “SPN: 1636, FMI: 16 – CAC Efficiency Low”, “SPN: 2659, FMI: 0 – EGR Flow Target Error”, and “SPN: 520372, FMI: 16 – SCR Closed Loop Control At Maximum Limit. TxId: 17 SPN: 520215 FMI: 6 (Current Above Normal) Count: 127 orbitone, Dec 11, 2019. DuPage, Aug 31, 2020 #1 + Quote Reply Trucking Jobs in 30 seconds Every month 400 people find a job with the help of TruckersReport. Experts Assistant chat Customer: SCR closed loop control at maximum limit. Freightliner cascadia DD13 DD15 DD16 Emissions derate bypass 5 miles per hour SCR DEF light blinking Francisco Amaya 263K views 4 years ago SCR closed loop Alrey Industries Top Tech Diesel 19K. i thank every one and all staffs who are helping to have. 2 SPN 521049/FMI 31 - GHG17 DEF Inducement DEF Lamp Active Table 1. Aftertreatment problem : r/DieselTechs. co/Is your Detroit Heavy Duty DD engine having NOx c. I dont think u are going to be able to clear it without the detroit software Attached Files: Screenshot_20200905-140430. I get code 520372 FMI 16。 2017 freightliner casacadia DD15. We have fault code spn 520372 could you hel us? Cascadia…. 520372/FMI 14 or SPN 5841/FMI 14? Yes - Diagnose the other fault codes first. SPN 520372/FMI 16 Description The Fault Indicates High DEF Delivery Monitored Parameter NOx Conversion Efficiency Typical Enabling Conditions Closed Loop DEF Dosing Monitor Sequence None Execution Frequency Always Enabled Typical Duration Two Seconds Dash Lamps MIL Engine Reaction None Verification Parked SCR Efficiency Test Check as follows: 1. 3 SPN 521050/FMI 31 - GHG17 DEF Inducement SEL Lamp Active. PDF National Highway Traffic Safety Administration. Monitored Parameter SCR and Diesel Particulate Filter (DPF) Sensors Typical Enabling Conditions Always Enabled Monitor Sequence None. armo, Oct 22, 2022 #8 + Quote Reply. DTC stands for Diagnostic Trouble Codes. Soot in tail pipe I have Code. ‪ Check as follows:‪ Check for multiple codes: If CPC SPN 168/FMI 0/14/18 (Battery Voltage) are present troubleshoot these first. DEF header was replaced, code was cleared and thetruck was back on the road. SNP-520371 & 520372 FMI-16 Technician: TomcM28 Thank you! Ill look those up and get back to you directly. spn 520372/fmi 16 Description The Fault Indicates High DEF Delivery Monitored Parameter NOx Conversion Efficiency Typical Enabling Conditions Closed Loop DEF Dosing Monitor Sequence None Execution Frequency Always Enabled Typical Duration Two Seconds Dash Lamps MIL Engine Reaction None Verification Parked SCR Efficiency Test Check as follows: 1. Summary: 0306-16 TCM SPN 520970 FMI 7 Communication Number: 0305-16, Date: 2016-03-05 Category: 103100 POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM, PCM) Summary: 0305-16 TCM SPN 520999 FMI 7 March Communication Number: 0304-16 SPN 2791, Date: 2016-03-04 Category: 060000 ENGINE (PWS). SPN-520372 16 2017 Cascadia. Is DEF percentage between 31 and 34%? Yes; Go to step 3. - For a complete reference see SAE documentation regarding Serial Control and Communications. Did the NOx Sensor Verification test. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features Press Copyright Contact us Creators. Summary: 0306-16 TCM SPN 520970 FMI 7 Communication Number: 0305-16, Date: 2016-03-05 Category: 103100 POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM, PCM) Summary: 0305-16 TCM SPN 520999 FMI 7 March Communication Number: 0304-16 SPN 2791, Date: 2016-03-04 Category: 060000 ENGINE (PWS). Daniel Wilson Satisfied Customers: 15,691 Verified. SPN 520371/FMI 16 Description The Fault Indicates High DEF Delivery Monitored Parameter NOx Conversion Efficiency Typical Enabling Conditions Closed Loop DEF Dosing Monitor Sequence None Execution Frequency Always Enabled Typical Duration Two Seconds Dash Lamps None Engine Reaction None Verification Parked SCR Efficiency Test Check as follows: 1. Perform the repair verification. SPN 521049/FMI 31 Description This Code Sets When There is a Code Present for the Diesel Exhaust Fluid (DEF) Tank Level, DEF Dosing Unit, DEF Pump, NOx Sensors, Blocked DEF Line, DEF Quality, NOx Efficiency, Selective Catalyst Reduction (SCR) Harness and/or SCR Sensor. If the fault returns, Goto step 4. 2 SPN 520372/FMI 16 - GHG17 Selective Catalyst Reduction Closed Loop Control at Maximum Limit Check as follows: WARNING ENGINE EXHAUST To avoid injury from inhaling engine exhaust, always operate the engine in a well-ventilated area. Reprogramming and emission label replacement corrects various fault code issues such as “SPN: 1636, FMI: 16 – CAC Efficiency Low”, “SPN: 2659, FMI: 0 – EGR Flow Target. SPN 521050/FMI 31 Description This Code Sets After SPN 521049/FMI 31 is Present and the Speed Limit has been Reduced to 90 kph (55 mph). Conversion Efficiency Low’ Mean On Detroit >What Does ‘SCR NOx Conversion Efficiency Low’ Mean On Detroit. Fault number 520372 FMI 16. 11 0 Jul 5, 2020 0 SPN-520372 16 2017 Cascadia. Turn the ignition ON (key ON, engine OFF). What Does ‘SCR NOx Conversion Efficiency Low’ Mean On Detroit. Dont forget to Subscribe! - https://goo. 0 ZGS 002 or greater? Yes; Go to step 4. Zip Class A CDL Experience Please select ALL of your current, valid driver’s licenses CDL A CDL B CDL C Send me job offers Forums > >. Filters have failed, sometimes they will NOT show signs of damage or visible soot trails on outlet of substrate. SPN520372 SPN 16 SPN5298 SPN 14 Is this just bad DEF ####ong up with works or am I in for a serious bill? Hazardous, Oct 19, 2020 #1 + Quote Reply Trucking Jobs in 30 seconds Every month 400 people find a job with the help of TruckersReport. I have a 2017 freightliner cascadia that has fault codes…. Check as follows: Connect DiagnosticLink ®. No，my dpf regen is Medium and Heavy Trucks Ask an Expert Car Questions Truck Repair I get code 520372 FMI 16。 2017 freightliner casacadia DD15. This spn fmi codes help explain the underlying meaning of the numerical components which build an engine fault code. Two new codes are showing up: SPN: 520372 FMI: 16(High. This is a fault that sets when the after treatment system has an abnormal reading of DEF consumption. 1 FAULT CODE DESCRIPTION GHG14 4360 20 SCR Inlet Temperature Sensor Drift High in Range 4363 0 SCR Outlet Temperature High. com>Please help to get home:(. A DTC code is a series of diagnostic trouble codes used by a vehicle’s onboard diagnostics (OBD) system to alert you when a vehicle experiences a malfunction. NED A26 Misfire Detection Session Instructions 1 8. The measurement for this sensor happens by measuring the inlet and outlet NOx sensors to determine the efficiency rate. Soot in tail pipe Aug 31, 2020 3:16 PM I have Code 520349 FMI 14 DPF Filtration Efficiency Low. Are there any Selective Catalyst Reduction (SCR) or Diesel ParticulateFilter (DPF) related fault codes present? Yes; diagnose and repair the emission-related fault codes first. 3719 16 Soot Level High 3719 31 DPF Zone 2 Condition 3720 15 DPF Ash Clean Request 3936 18 DPF Pressure - Out of Range Low 4332 31 DOC inlet temperature out of range low SPN FMI ACM2. 2016 Freightliner Cascadia Technical Service Bulletins>2016 Freightliner Cascadia Technical Service Bulletins. orbitone, Dec 11, 2019 #1 + Quote Reply. Diesel engine exhaust and some of its constituents are known to the State of California to causecancer, birth defects, and other reproductive harm. Or it could be a bad scr all together. Next stated cause was failed outlet nox sensor, they replaced the outlet nox sensor. 2 SPN 520372/FMI 16 - GHG17 Selective Catalyst Reduction Closed Loop Control at Maximum Limit Check as follows: WARNING ENGINE EXHAUST To avoid injury from inhaling engine exhaust, always operate the engine in a well-ventilated area. 1 Freon Level REFRGNT CHRG REFRIG Pres. Replace both dpfs and make sure to run regen on soot sensor/wipe soot from sensor. SPN 520372 / FMI 16 - SCR closed loop at maximum limit fault. When the vehicle’s OBD system detects a. 520372 Fmi 16SPN 520371 FMI 16. I have code 520372 fmi 162019 freightliner vin. WARNING: PERSONAL INJURY Diesel engine exhaust and some of its constituents are known to the State of California to causecancer, birth defects, and other reproductive harm. Mil light Medium and Heavy Trucks Ask an Expert Car Questions Truck Repair This answer was rated: ★★★★ I have code 520372 fmi 16. 520342 FMI-17 DEF System Rationality DEF pump Speed High Quick search showed some discussion last year of some trucks with that issue but fault solution had not been developed yet. Recommend you take it to the dealer. 3719 16 Soot Level High 3719 31 DPF Zone 2 Condition 3720 15 DPF Ash Clean Request 3936 18 DPF Pressure - Out of Range Low 4332 31 DOC inlet temperature out of range low preventing HC dosing 4334 3 DEF Pressure Sensor Circuit Failed High 4334 4 DEF Pressure Sensor Circuit Failed Low 4354 3 SCR Line Heater #1 Circuit Failed High. Part 1 2017 Freightliner dd15. Start the engine, using Diagnostic Link run the NOx Sensor Verification test located in the drop down menu underActions / Aftertreatment. National Highway Traffic Safety Administration. this is a customer of longhorn international and i have shop and had one before this new one. everything im reading online says it just needs a system update. 2 SPN 521049/FMI 31 - GHG17 DEF Inducement DEF Lamp Active Table 1. Zip Class A CDL Experience Please select ALL of your current, valid driver’s licenses CDL A CDL B CDL. Original stated casuse was DEF buildup Dealer did a regen, code would not reset. Reddit>Aftertreatment problem : r/DieselTechs. 6121 N Cutter Circle, Suite A Portland, Oregon 97217-4090 Please distribute to: Dealer Principal, Warranty Manager, Service Manager, Parts Manager, Sales Manager Freightliner Dealers Western Star Dealers FCCC Dealers Thomas Built Bus Dealers Direct Warranty Customers Export DDC Distributors. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright. SPN-520372 16 2017 Cascadia. When the engine returns to idle, turn the ignition off and wait for all themodules to power down (usually about one minute). No; update the ACM using the latest server information. WARRANTY INFORMATION LETTER. 4 KB Views: 26 armo, Oct 22, 2022 #8 + Quote Reply Trucking jobs in your area Soar Transportation Group Western Regional Runs! Wenatchee, WA Show Details Decker Truck Line, Inc Class A CDL Reefer Drivers - PAY INCREASE! - Earn Up to $. Zip Class A CDL Experience Please select ALL of your current, valid driver’s licenses CDL A CDL B CDL C. 3 Non-Condensed Gas in Freon GAS IN REFRIGN Gas In REFRIGN. Fault number 520372 FMI 16. I pulled the filters and theres no soot on the outlet of the DPF filters. What’s the best card for fuel jakebrake58 posted May 2, 2023 at 9:28 AM. SNP-520371 & 520372 FMI-16 Technician: TomcM28 Thank you! Ill look those up and get back to you directly. Ask Your Own Medium and Heavy Trucks Question Thanks Technician: TomcM28 Hi, your VIN is not coming up. (520372) (16) (permenant). 2 SPN 3216/FMI 16 - GHG17 Engine Out NOx Sensor Drifted Low Table 1. SPN FMI ACM CODE DESCRIPTION 520358 3 Soot Sensor printed circuit board Temperature 2 signal range high 520372 16 SCR closed loop control at maximum limit 520372 14 SCR closed loop control at maximum limit (Timeout) 520378 0 Aftertreatment Temperature not plausible. 75 CPM! Wenatchee, WA Show Details See more jobs in Wenatchee, WA. Description This code sets when the ACM detects that the SCR NOx Conversion efficiency is low. - For a complete … From spnfmi. SPN 520372 / FMI 16 - SCR closed loop at maximum limit fault. Check for other emission-related fault codes. 2 SPN 520371/FMI 16 - GHG17 Selective Catalyst Reduction Closed Loop Control at Maximum Limit (Multiples Sources) Table 1. SPN 520371/FMI 16 Description The Fault Indicates High DEF Delivery Monitored Parameter NOx Conversion Efficiency Typical Enabling Conditions Closed. Freightliner cascadia dd15 fault 520342 fmi17 any idea?. 2020 dd16 derate with first code 520372/16 spf/fmi. ” There are approximately 457 engines affected by this Field Service Campaign. One thought on “ Detroit Diesel Engines Fault Codes List ” faramarz hedayatifar 29/11/2020. This spn fmi codes help explain the underlying meaning of the numerical components which build an engine fault code. Check as follows: WARNING ENGINE EXHAUST To avoid injury from inhaling engine exhaust, always operate the engine in a well-ventilated area. Should I get 16 ply steers even PermanentTourist posted May 2, 2023 at 7:45 PM. SPN 520372 / FMI 16 - SCR closed loop at maximum limit fault. ago Thats weird [deleted] • 1 yr. Please help to get home:(. DEF tank is not frozen and there appears to be no blockage in the Medium and Heavy Trucks Ask an Expert. I pulled the filters and theres no. Codes that indicate that a problem with an electronic circuit or an electronic component has been detected Codes that indicate that a system event has been detected Typically, the first category of code is generated when the signal for the circuit is outside the range of the sensor. There is a software update to correct issues with this code. Different codes have different DTC meanings and represent specific problems in your vehicle. The system is showing that too much DEF is being used to maintain. 2 SPN 3216/FMI 16 - GHG17 Engine Out NOx Sensor Drifted Low Table 1. Experts Assistant chat Customer: SCR closed loop control at maximum limit. There are approximately 457 engines affected by this Field Service Campaign. 520372 is a scr closed loop limit fault. Anyone want to check what cold be. Every month 400 people find a job with the help of TruckersReport. Section 76. Reprogramming and emission label replacement corrects various fault code issues such as “SPN: 1636, FMI: 16 – CAC Efficiency Low”, “SPN: 2659, FMI: 0 – EGR Flow Target Error”, and “SPN: 520372, FMI: 16 – SCR Closed Loop Control At Maximum Limit.