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Spn 4334 - SPN 4334_FMI 4 - GHG17 - Free download as PDF File (.pdf), Text File (.txt) or vi

J1939 Code and Description CDL Code and Descriptio

Foreword Ordernumber: PV776-89046912 Repl: PV776-89043080 ©2012VolvoGroupNorthAmerica,Inc.,Greensboro,NCUSA Allrightsreserved.Nopartofthispublicationmaybereproduced ...Replies (1) . Hardware isn't ineligible because it isn't 'good enough'. Hardware is ineligible because it lacks features needed to support the hardened security that …Cummins ISB4.5 CM2150 Fault Code: 1682 PID: SPN: 3362 FMI: 31 Aftertreatment Diesel Exhaust Fluid Dosing Unit Input Lines – Condition Exists. Circuit Description The diesel exhaust fluid dosing unit input lines are responsible for transporting diesel exhaust fluid between the dosing unit, dosing valve, and diesel exhaust fluid tank.SPN: XXXX FMI: XX Active OC: XXX SA: XXX. SPN: XXXX FMI: XX Previously Active OC: XXX SA: XXX. NOTE - Turning the key switch off, turning the key switch to the CRANK position, or releasing the park brake will take the gauge cluster out of the diagnostic mode. Displaying Codes on the VID (if equipped)This document will guide the user through properly and quickly deciding the repair action required for the aftertreatment harness on SCR aftertreatment vehicles. Symptom(s) Diagnostic Trouble Code(s) & Dashboard Indicator Light(s): SPN FMIDescription. 1761 1 DEFTLT Signal Out of range High 1761 19 DEFTL not detected on J1939 3031 2 DEFTT signal ...Detroit DD15 EPA10 (2010-13) Fault Code: SPN 4334 FMI 17 (ACM) Diesel Exhaust Fluid (DEF) Purge Pressure High DESCRIPTION: Diesel exhaust fluid (DEF) purge pressure high. MONITORED PARAMETER: Diesel exhaust fluid (DEF) purge pressure. TYPICAL ENABLING CONDITIONS: 1. Engine idle 1 minute. 2. Engine off.If no contamination is found, install removed fittings. Go to step 14. 14. Disconnect both the air outlet supply lines from tee fitting (3) on the Pressure Limiting Unit (1). 15. Plug off one side of the tee connector (3) and connect an appropriate air pressure gauge 0-1,379 kPa (0-200 psi) on the other side.Home / DTC TRUCKS / Detroit / DD13 EPA10 (2010-13) / Detroit DD13 EPA10 (2010-13) Fault Code: SPN 4334 FMI 3 (ACM) Diesel Exhaust Fluid Pressure Sensor Circuit Failed High. DOWNLOAD Detroit BackDoor Password Generator V1 V2 $ 35.00 Add to cart. DOWNLOAD jpro software professional download ( JPRO 2022 V3 ) 1 PCSomething to do with the DEF flow. Could be the pump, filter, inlet filter, tanks vents, etc If it persists it will derate you 25% for a while, then 40% for a while, then drop you down to 5 mph.Cummins ISX15 CM2250 (2010-12) Fault Code: 3572 PID: SPN: 4334 FMI: 4 Aftertreatment Diesel Exhaust fluid Pressure Sensor- Voltage Below Normal or Shorted to Low Source Circuit Description The aftertreatment diesel exhaust fluid controller provides a 5 volt supply and a ground to the aftertreatment diesel exhaust fluid pressure sensor.NOTE: SPN 520327/FMI 3 may also set as a result of this fault. 1. Connect DiagnosticLink™ or newer. 2. Turn the ignition ON (key ON, engine OFF). 3. Check for multiple codes. Are codes SPN 4334/FMI 3, 4, SPN 4375/FMI 3, 4, or SPN 3361/FMI 3, 4, 5 also present? a. Yes; diagnose and repair the other fault codes first. Verify repair. b. No; Go ...Thanks for the info. I definitely noticed the engine derate (didn't know it was 25%) though this time it doesn't seem to be as bad as the first time. And, the tech repaired it exactly the way the SPN 4334 service manual stated. Fortunately, my truck is still under warranty so I'll have them fix it again. At least I know more about it now.WARNING!!: ⚠️⚠️⚠️Always use the proper tools and safety equipment to perform this job. Failure to perform the job correctly can result in personal injury or ...Detroit DD15 EPA10 (2010-13) Fault Code: SPN 4334 FMI 4 (ACM) Diesel Exhaust Fluid Pressure Sensor Circuit Failed Low DESCRIPTION: This code sets when the Aftertreatment Control Module (ACM) detects a short to ground on the Diesel Exhaust Fluid (DEF) Pressure Sensor Circuit.SPN FMI DESCRIPTION QSB QSC QSL9 QSM1 1 QSX1 5 QSK19 QSK23 QS T 30 QSK45 QSK60 QSK78 HHP Level Number (**) 261 (Yellow) P174 0 174 16 Fuel Temperature High – Warning X 261 (White) P174 0 174 0 Fuel Temperature High – Warning X X 1 1 1 263 (Yellow) P174 3 174 3 Fuel Temperature Sensor Circuit - shorted high XX X 2Spn 4334 fmi 7. Can you tell me what is causing this code. Freightliner vin# ***** Answered in 1 hour by: Technician: roybelding. roybelding, Shop Foreman …This Simple Cooking with Heart Latin recipe features fruits and veggies as well as a variety of flavorful spices served with whole-grain corn tortillas. Average Rating: This tradit...a. If SPN 4334/FMI 4, and SPN 3510/FMI 4 are present, repair short to ground between pin 5 of the DEF dosing unit and pin 84 of the Aftertreatment Control Module (ACM). b. If only SPN 4334/FMI 4 is present, Go to step 2. 2. Turn the ignition OFF. 3. Disconnect the DEF dosing unit harness connector. 4.whatsapp +51955515985; [email protected]; 24/7 Customer Support; Facebook-f Twitter Github Bitbucket Twitter Github Bitbucket2 SPN 4334/FMI 7 - EPA10 This diagnostic is typically DEF Pressure Low. Table 1. SPN 4334/FMI 7 Description DEF Pressure Low Monitored Parameter DEF Pressure Typical Enabling Conditions Pressure Limiting Unit On, Dosing Enabled Monitor Sequence None Execution Frequency Continuous when enabling conditions met Typical Duration 60 Seconds Dash ...2 SPN 4374/FMI 0 - GHG14 Under Pressurized Diesel Exhaust Fluid System Table 1. SPN 4374/FMI 0 ... Are codes SPN 4334/FMI 3, 4, SPN 4375/FMI 3, 4, or SPN 3361/FMI 3, 4, 5 also present? a. Yes; diagnose and repair the other fault codes first. Verify repair. b. No; Go to step 4. 4. Turn the ignition OFF.It is an informational fault . 4375-4...Aftertreatment 1 Diesel Exhaust Fluid Pump Command Circuit - Voltage Below Normal or Shorted to Low Source. A short circuit to ground has been detected in the Diesel Exhaust Fluid Pump Command Circuit. Possible reduced engine performance. The aftertreatment diesel exhaust fluid dosing unit performs many ...Learn about the different types of roofs and materials available for your home. From asphalt shingles to metal roofing, this guide has you covered. Expert Advice On Improving Your ...I have a friend getting this in the code list. I dont know anything cummins. Any help is appreciated. SPN: 520953 FMI: 4OC: 1 SA: 0¿SPN: 4334 FMI: 18OC: 1...whatsapp +51955515985; [email protected]; 24/7 Customer Support; Facebook-f Twitter Github Bitbucket Twitter Github BitbucketHome / DTC TRUCKS / Detroit / DD15 EPA10 (2010-13) / Detroit DD15 EPA10 (2010-13) Fault Code: SPN 4334 FMI 4 (ACM) Diesel Exhaust Fluid Pressure Sensor Circuit Failed Low. DOWNLOAD Detroit BackDoor Password Generator V1 V2 $ 35.00 Add to cart. Allison doc premium update 2023 v1 Diagnostic Software DownloadSPN 97 - FMI 15 (Fault Code 418) Blog.Teknisi. Subscribe to receive free email updates: 3 Responses to "SPN 97 - FMI 3 (Fault Code 428)" Unknown Wednesday, June 19, 2019 at 2:36:00 AM PDT. How can I remove the fault code from the ecm- SPN97 FAULT CODE 428 . Reply Delete. Replies.SPN 4374/FMI 0 - GHG14 Under Pressurized Diesel Exhaust Fluid System. SPN 4374/FMI 0 Description ... Connect DiagnosticLink ®. 2. Turn the ignition ON (key ON, engine OFF). 3. Check for multiple codes. Are codes SPN 4334/FMI 3, 4, SPN 4375/FMI 3, 4, or SPN 3361/FMI 3, 4, 5 also present? a. Yes; diagnose and repair the other fault codes first ...Typical fault code with Freightliner Cascadia One Box, possible causes:1) Bad DEF quality2) Bad DEF metering unit3) Bad or faulty NOx inlet or outlet sensor4...Don't forget to Like and Subscribe to the Channel! - https://goo.gl/F75rPgCheck out our Merch! - https://thedieseler.myteespring.co/Consider supporting our c...Cummins ISB4.5 CM2150 Fault Code: 3571 PID: SPN: 4334 FMI: 3 Aftertreatment Diesel Exhaust Fluid Pressure Sensor – Voltage Above Normal or Shorted to High Source. Circuit Description The aftertreatment diesel exhaust fluid controller provides a 5 volt supply and a ground to the aftertreatment diesel exhaust fluid pressure sensor.4334 Halifax Ter NE, Roswell GA, is a Single Family home that contains 3122 sq ft and was built in 1990.It contains 5 bedrooms and 3 bathrooms.This home last …Be the first to review “Cummins X12 CM2350 X119B (2018 & Newer) Fault Code: 3571 PID: SPN: 4334 FMI: 3 Aftertreatment 1 Diesel Exhaust Fluid Pressure Sensor Circuit- Voltage Above Normal or Shorted to High Source” Cancel replyMental image is how you see yourself. Learn about positive and negative mental image and how to foster a healthy, accurate self-image. Advertisement When you look at yourself in a ...DESCRIPTION: This code sets when the Aftertreatment Control Module (ACM) detects a short to ground on the Diesel Exhaust Fluid (DEF) Pressure Sensor Circuit.3. Check for multiple codes. Are codes SPN 4334/FMI 3, 4, SPN 4375/FMI 3, 4, or SPN 3361/FMI 3, 4, 5 also present? a. Yes; diagnose and repair the other fault codes first. Verify repair. b. No; Go to step 4. 4. Turn the ignition OFF. 5. Using DEF test strip A0005850202, check for diesel fuel or oil contamination of the DEF fluid. Does the test ...Be the first to review “Detroit DD15 EPA10 (2010-13) Fault Code: SPN 4334 FMI 4 (ACM) Diesel Exhaust Fluid Pressure Sensor Circuit Failed Low” Cancel reply.SPN 5246 FMI 15 Cascadia. For the 2014 model, this code is telling you that you are in a derate mode. The solution is to do a complete regen. Then, the information provided above for the 2011 and 2010 models applies here as well. The reason you are sent into derate is that you ignored another fault code for some time.The 4334 is the SPN and the 7 is the fault. What the fault is telling you is the DEF pressure is low. On the DEF system, there is a air line that feeds the the DEF injector to make the DEF spray into the catalyst. On that air line is a small inline filter just before that DEF system. It will occassionally get debris in that air line.Cummins ISB6.7 CM2350 (2013-17) Fault Code: 3572 PID: SPN: 4334 FMI: 4 Aftertreatment 1 Diesel Exhaust Fluid Pressure Sensor Circuit- Voltage Below Normal or Shorted to Low Source. Circuit Description The Engine Control Module (ECM) provides a 5 volt supply and a ground to the aftertreatment diesel exhaust fluid pressure sensor.whatsapp +51955515985; [email protected]; 24/7 Customer Support; Facebook-f Twitter Github Bitbucket Twitter Github BitbucketCummins ISX15 CM2250 (2010-12) Fault Code: 3572 PID: SPN: 4334 FMI: 4 Aftertreatment Diesel Exhaust fluid Pressure Sensor- Voltage Below Normal or Shorted to Low Source Circuit Description The aftertreatment diesel exhaust fluid controller provides a 5 volt supply and a ground to the aftertreatment diesel exhaust fluid pressure sensor.If other faults are active, in addition to SPN 4334/FMI 3,4, or SPN 4374/FMI 3,4 troubleshoot the other faults first. b. If only SPN 520328/FMI 7 is present, Go to step 4. 4. Replace Pressure Relief Valve PRV. Perform SCR ADS Self-Check Routine to prime the system. ... SPN 520328/FMI 7 - GHG14 Subject: DEF System has been Over PressurizedDESCRIPTION: Diesel exhaust fluid (DEF) pressure sensor circuit voltage above normal or shorted to high source. MONITORED PARAMETER: Diesel exhaust fluidBe the first to review “Detroit DD16 EPA10 (2010-13) Fault Code: SPN 4334 FMI 17 (ACM) Diesel Exhaust Fluid (DEF) Purge Pressure High” Cancel reply Your email address will not be published. Required fields are marked *Technician: cumminsdr. ok. Fault Code: 3596. PID: SPN: 4334. FMI: 2. Aftertreatment Diesel Exhaust Fluid Pressure Sensor - Data Erratic, Intermittent, or Incorrect. The diesel exhaust fluid pressure sensor has reported a reading too high or low for the operating conditions. Diesel exhaust fluid injection into the aftertreatment system is disabled.2 SPN 4334/FMI 3 - EPA10. DEF pressure sensor circuit failed high. Table 1. SPN 4334/FMI 3. Description. This code sets when the Aftertreatment Control Module (ACM) detects a short to voltage or open on the Diesel Exhaust Fluid (DEF) Pressure Sensor Circuit. Monitored Parameter. Diesel Exhaust Fluid (DEF) Pressure Sensor.Dirt and debris can contaminate fuel system. Clean all fittings before disassembly, and cap/plug. all open fuel lines and ports to prevent contamination from entering fuel system. Failure to comply. may cause damage to equipment. Table 1. SPN#157, FMI#18 ― Fuel Pressure Lower Than Commanded Pressure. MALFUNCTION. TEST OR INSPECTION.SPN 4334 FMI 16 - DEF Doser Absolute Pressure (high) SPN 3363 FMI 16 - DEF Tank Heater (high) SPN 3360 FMI 19 - DEF Controller (data Error) ... SPN 3226 FMI 09 - Outlet NOx (abnormal update rate) One that was on then off: SPN 4342 FMI 05 - DEF Line Heater 2 State - Current Below NormalHome / DTC TRUCKS / VOLVO / All Engines (2010 Emissions) / Volvo All Engines (2010 Emissions) Fault Code: SPN 4334 FMI 5 PID: PPID 273 Aftertreatment 1 SCR Dosing Reagent ... 102 SPN: 102 FMI: 4 Intake Manifold 1 Pressure Sensor Circuit - Voltage Below Normal or Shorted to Low Source. Low signal voltage or open circuit detected at the intake ...Have a 2012 freightliner cascadia. Getting a code SPN 4334 FMI 7, "DEF pressure low". Understand there is a procedure for addressing this including cleaning of a screen in the DEF valve. Ple … read moreHaving HIV weakens your body's immune system. This can lead to serious infections that are called opportunistic infections (OIs). Read more. Having HIV weakens your body's immune s...DEUTZ DTC-Codes EMR5 Diagnosis- and Error codes DTC-Code SPN FMI Fehlerbescheibung Fault description Date: 22.03.2023 Overview of all active error codesNo: Clean or replace DEFSM pressure line. After repairs are complete, retest for SPN 4334 FMI 2. End Diagnostic Tests. After performing diagnostic steps, if SPN 4334 FMI 2 remains, verify if step was completed correctly and proper decision was made. Notify supervisor for further action. SPN 2588 FMI 15 - Vehicle overspeed 1, event log, non …Cummins ISB4.5 CM2150 Fault Code: 2771 PID: SPN: 3226 FMI: 9 Aftertreatment Outlet NOx Sensor – Abnormal Update Rate. Circuit Description The aftertreatment outlet NOx (nitrogen oxides) sensor is a smart device and communicates with the engine ECM via the J1939 data link. The aftertreatment outlet NOx sensor receives power and a ground ...Dd15 Spn 4374 fmi 4. Like. CommentFor intermittent power supply and datalink communication issues with Aftertreatment Components, it is highly recommended that the OEM Power Distribution2 SPN 4334/FMI 4 - GHG14. This diagnostic is typically Diesel Exhaust Fluid (DEF) Pressure Sensor Circuit Failed Low. Table 1. Table 2. Check for multiple codes. If SPN 4334/FMI 4, and SPN 3510/FMI 4 are present, repair short to ground between pin 5 of the DEF pressure sensor and pin 84 of the ACM2.1. If only SPN 4334/FMI 4 is present Go to step 2.DESCRIPTION: Diesel exhaust fluid (DEF) pressure sensor circuit voltage above normal or shorted to high source. MONITORED PARAMETER: Diesel exhaust fluidSPN-5246 FMI-16, SPN-5246 FMI-15, SPN-4364 FMI-18,... - DTNA Solutions Author: CORZARN Created Date: 4/28/2021 11:52:07 AM ...SPN 5246 FMI 0 Cummins. This code is letting you know the final issue that will be implemented. The code is called the Regulatory Fault Ignored - Final Action (speed Limit). What that means is that your engine will be derated to 5 mph and no higher. You can try to drive above the 5 mph restriction but you run the risk of damaging other ...2. Is fault code SPN 3510/FMI 3 also present along with SPN 4335/FMI 3 and SPN 4334/FMI 3? a. Yes; repair short to voltage (greater than 5.0v) between pin 3 of the DEF metering unit air pressure sensor and pin 84 of the ACM. Verify repairs. 2 SPN 4335/FMI 3 - EPA10 4 All information subject to change without notice.This document will guide the user through properly and quickly deciding the repair action required for the aftertreatment harness on SCR aftertreatment vehicles. Symptom(s) Diagnostic Trouble Code(s) & Dashboard Indicator Light(s): SPN FMIDescription. 1761 1 DEFTLT Signal Out of range High 1761 19 DEFTL not detected on J1939 3031 2 DEFTT signal ...For intermittent power supply and datalink communication issues with Aftertreatment Components, it is highly recommended that the OEM Power DistributionSPN 4334 FMI 2, 3, 4, 7 and 18. SPN 4340 FMI 3 and 4. SPN 4342 FMI 3 and 4. SPN 4344 FMI 3 and 4. SPN 5491 FMI 3 and 5. Fault Facts. None. Drive Cycle to Determine Fault Status. Road Test. Possible Causes; Debris in DEF system. Failed DEF connection, line or fitting. DEF Supply Module PWR Open or short to GND.Turn the ignition ON (Key ON, Engine OFF). Go to step 3. Check for multiple codes. Are codes SPN 4335/FMI 3 or SPN 3510/FMI 3 also present? Yes; Go t o step 4. No; Go t o step 9. Turn the ignition OFF. Go to step 5. Disconnect the DEF air pressure sensor electrical connector.For intermittent power supply and datalink communication issues with Aftertreatment Components, it is highly recommended that the OEM Power DistributionBe the first to review "Cummins ISX11.9 CM2250 (2010-12) Fault Code: 3574 PID: SPN: 4334 FMI: 18 Aftertreatment Diesel Exhaust Fluid Pressure Sensor- Data Valid But Below Normal Operating Range- Moderately Severe Level" Cancel reply. Your email address will not be published.This spn fmi codes help explain the underlying meaning of the numerical components which build an engine fault code. - This is not a comprehensive list, or an alternative to the standard fault diagnostic process and only serves as a supplemental reference.How To Clear SPN 1569 FMI 31. “ To clear 1569:31 you need to use Servicemaxx and go into parameters. Set SCR RESET PP 95461 from "0" to "1" (from NO to YES) Press "Program all changes". Clear DTCs. Cycle the key off for 1 minute (key must be off for a minimum of 1 minute) Go back into parameters.Cummins ISB4.5 CM2150 Fault Code: 3571 PID: SPN: 4334 FMI: 3 Aftertreatment Diesel Exhaust Fluid Pressure Sensor – Voltage Above Normal or Shorted to High Source. Circuit Description The aftertreatment diesel exhaust fluid controller provides a 5 volt supply and a ground to the aftertreatment diesel exhaust fluid pressure sensor.Cummins X15 CM2450 X124B (2018 & Newer) Fault Code: 3446 PID: SPN: 3222 FMI: 5 Aftertreatment Intake Gas Sensor Heater- Current Below Normal or Open Circuit. Circuit Description The aftertreatment intake NOx (nitrogen oxides) sensor is a smart device and communicates with the engine control module (ECM) via the J1939 data link. The ...Title. SPN-5246 FMI-16, SPN-5246 FMI-15, SPN-4364 FMI-18,... - DTNA Solutions. Author. CORZARN. Created Date. 4/28/2021 11:52:07 AM.Feb 9, 2024 · Decoding SPN 4334: DEF Pressure Sensor. SPN 4334 flags a discrepancy within the DEF Pressure sensor circuit, whether it's an invalid reading or an indication of a circuit fault. To effectively tackle this challenge, it's imperative to grasp the nuances of the various Failure Mode Indicators (FMIs) associated with this code:NOTE: SPN 520327/FMI 4 may also set as a result of this fault. Connect DDDL/DDRS 7.10 or newer. Turn the ignition ON (key ON, engine OFF). Check for multiple codes. If other faults SPN 4334/FMI 3, 4 or SPN 4374/FMI 3, 4 are active, troubleshoot the other faults first. If only SPN 4374/FMI 0 is present, Go to step 4. Turn the ignition OFF.Feb 9, 2024 · Decoding SPN 4334: DEF Pressure Sensor. SPN 4334 flags a discrepancy within the DEF Pressure sensor circuit, whether it's an invalid reading or an indication of a circuit fault. To effectively tackle this challenge, it's imperative to grasp the nuances of the various Failure Mode Indicators (FMIs) associated with this code:NOTE: SPN 520327/FMI 4 may also set as a result of this fault. Connect DDDL/DDRS 7.10 or newer. Turn the ignition ON (key ON, engine OFF). Check for multiple codes. If other faults SPN 4334/FMI 3, 4 or SPN 4374/FMI 3, 4 are active, troubleshoot the other faults first. If only SPN 4374/FMI 0 is present, Go to step 4. Turn the ignition OFF.Volvo All Engines (2010 Emissions) Fault Code: SPN 4334 FMI 5 PID: PPID 273 Aftertreatment 1 SCR Dosing Reagent Absolute Pressure All Engines (2010 Emissions) Rated 0 out of 5. Cummins ISB6.7 CM2350 (2013-17) Fault Code: 131 PID: 91 SPN: 91 FMI: 3 Accelerator Pedal or Lever Position Sensor 1 Circuit- Voltage Above Normal or Shorted to High SourceThe initial Fault Code Aug 2020 was SPN 4334 FMI 18 that Spartan tech said was reported as low doser pressure but within spec. The recommended mediation was to shut down, open DEF tank fill cap, and disconnect cables to the Dosing Pump module and wait for 15 minutes before reconnecting and returning the tank fill cap. This resolved the lit DEF ...3. Check for multiple codes. a. If other faults are active in addition to SPN 4334/FMI 3 or 4, or SPN 4374, Home / DTC TRUCKS / Cumminz / ISB4.5 CM2150 / Cummins ISB4.5 CM2150 Fault Code: 3572 PID: SPN: 4334 FMI: 4 Aftertre, Make sure your DEF (Diesel Exhaust Fluid) tank is 1/2 to FULL, you have a indicator on your fuel gauge , ServiceManual Trucks Group28 EngineControlModule(ECM),DiagnosticTroubleCode (DTC),Gui, 4334 Springboro Road, Clearcreek Twp., OH 45036. Stunning 4 bedroom, three-bath bri, SPN FMI DESCRIPTION QSB QSC QSL9 QSM1 1 QSX1 5 QSK19 QSK23 QS T 30 QSK45 , SPN 3610/FMI 2 - EPA10 - GHG14 (ACM) December 2013 Additions, Revisions, or, Be the first to review "Cummins ISX11.9 CM2250 (2010-12) , SPN 4334 FMI 18 Discussion in 'Trucks [ Eight, No: Clean or replace DEFSM pressure line. After repairs are complete, , Yes; clear faults and Go to step 17. No; Go to step 14. Disconnec, OURGP11,0000088. -19-27JUL06-1/3. Listing of Diagnostic Trou, 2 SPN 4364/FMI 1 - EPA10. Table 1. Connect Diagnos, 4334. 477.3 SPN 4334/FMI 7 - EPA10. DEF Pressure Low. This code sets, SPN: 4334. FMI: 2. Aftertreatment Diesel Exhaust Fluid Pr, Despues de llenar el tanque del def te sale el codigo de spn 4334 , No: Clean or replace DEFSM pressure line. After repairs , 2016 Kenworth T660 with a cummins isx 450. keeps throwing spn 4.