Freightliner cascadia fault codes

DOC Inlet Pressure Sensor part number A4721530928DPF Outlet Pressure Sensor part number A4721531028Silicone Hose to connect sensor to metal line going to 1 B...

Oct 13, 2019 · ebay store: https://www.ebay.com/str/dieseltruckrepairwebsite: https://dieseltruckrepairllc.com/I’ll show you how to read fault codes on your Freightliner tr... Suspect ECU is at fault if the problem persists. 136 002 05 Open circuit 4. Measure the resistance between pins 5 and 6 of the X2 (black) connector. Resistance is 900– 2000 ohms Repeat the test and check for intermittent open or short in circuits 377RF+ and 377RF–. Suspect ECU at fault if the problem persists. Resistance is greater than 2000 If you do not know how to reset fault codes on Freightliner Cascadia, here’s what you can do: 1. Turn off the battery switch for 15 minutes. 2. While waiting, check the oil level, coolant level, and the check engine lights. 3. After that, turn the knob back to the on position but do not start the truck immediately. 4.Line Heater 2 Open Circuit. Show/Hide Checkboxes. Check for multiple codes. If SPN 4355/FMI 5 and SPN 4354/FMI 5 are present, repair open between pin 9 of the ACM 120-pin connector and pin 2 of line heaters 2 and 1. If only SPN 4355/FMI 5 is present, Go to step 2. Disconnect line heater 2. Turn the ignition ON (key ON, engine …Datalink related fault codes. Discussion in 'Heavy ... Got following codes: spn 810 fmi 8, spn 639 fmi 9 Spn 523, 559, 527, 516215, 188,520, 560, 513 all fmi 9 ... I have 2014 Freightliner Cascadia with DD15, DT12 transmission, Wabco CMS. Woke up this morning, started my truck and got lil surprise on my dashboard. ...

Feb 14, 2022 · MasterTech Mike. Lead Diagnostic Technician. Academic Honors Diploma. 1 satisfied customers. Fault Code. 2018 freightliner cascadia. TxId: 33 SPN: 520762. TxId: 33 SPN: 520762 – Manufacturer Assignable SPN FMI: 3 (Voltage Above Normal) Count: 13 TxId: 61 SPN: 520372 – Manufacturer Assignable … read more. Cascadia New Cascadia vehicles have a different architecture, however similar concepts can be applied. Purpose of Solution: This supplemental troubleshooting guide is to provide additional information to the technical literature guides, and to offer some best practice guidelines to assist in diagnosing J1939 and CAN communication systems. Solution:About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright ...3. Check for multiple fault codes. Are there any aftertreatment system fault codes present? a. Yes; diagnose the other fault codes. b. No; Go to step 4. 4. Check the Aftertreatment Control Module (ACM) software level. Is the ACM software level lower than 7.56.7.0? a. Yes; update the ACM software to the latest available on the server. b. No; Go ...If your batteries were extremely low, this could also explain this fault code. I would however recommend having all of them tested and making sure all of your cables and connections are clean while making good contact. I hope you find this information helpful. ... 2017 freightliner cascadia 122sd. Engine codes: spn973, fmi 9, and spn2011, fmi 9

Truck seems to be running fine. I get (Eng 1) then CH 5 71 and Fail (5) also send 305 8 Fail 9 there is 2 Faults On Fault 1 spn 502090 3. Technician: Joe Green. It looks like 571/5 is for the engine brake switch open circuit. 3058/9 and 520909/3 both refer to the EGR system and indicate the flow is too high.I have fault code 2019 freightliner cascadia DD15. Mechanic's Assistant: I understand that you have a fault code on your 2015 Freightliner Cascadia with a DD15 engine, and the truck Mechanic will be able to help you with this issue. Have you noticed any specific issues or issues with your truck besides the fault code?2011 Freightliner Cascadia fault code spn 2631 fmi 1 followed the diag tree on this one several times code keeps returning smoke control is at 1.0000 when pulling. Unit has 449,000 miles on it pulled venturi and hot pipe to EGR cooler very sooted up my question is would a egr cooler keep making this code return.This question is about Car Insurance @lilah_c • 01/20/21 This answer was first published on 01/20/21. For the most current information about a financial product, you should always ...

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Apr 10, 2019 · I was also slightly rushed for work, so did not have time to tear into anything. Also, there is no MIL on the dash, which tells me it OK to drive. From what I understand, CAB codes are temperamental. Any insight would help. Thanks::Fault::-CAB 33-SPN 520403-Fail 31::Truck Info::-2012 Freightliner Cascadia (last 8 of Vin: CSBV9904) CASCADIA MAINTENANCE MANUAL Models: CA113DC CA113SLP CA125DC CA125SLP STI-478-6 (02/03/2022) Published by Daimler Truck North America LLC 4747 N. Channel Ave. Portland, OR 972172016 Freightliner Cascadia dd15 Detroit engine. I have a fault code on. It istxld: 61 SPN: 3556 Aftertreatment 1 hydrocarbon Doser 1 FMI 18 (low-moderate severity) count 1Can you help me with what thi … read moreHere is the testing and troubleshooting procedure for this fault code: The Motor Control Module (MCM) monitors the rail pressure and when rail pressure deviation is greater than 200 bar for eight seconds, the MCM sets the code. ... 2017 freightliner cascadia 122sd. Engine codes: spn973, fmi 9, and spn2011, fmi 9. ...Summary: Service Bulletin for Marker Light Gasket Leaks, New Cascadia. This bulletin replaces the version dated June 17,2019. A procedure has been added for inspection, repair, and replacement of damaged or spun rivet nuts. Communication Number: DASHLiftAxle, Date: 2020-04-27. Category: 100000 POWER TRAIN.

2015 Freightliner Cascadia with auto transmission, Eaton. VIN BR6264 Getting faults: spn 788 fmi 7 spn 522 fmi 7 Truck - Answered by a verified Technician ... Fault Code 26 - Clutch Slip J1587: MID 130 SID 55 FMI 10 J1939: SA 3 SPN 522 FMI 10. Overview. This fault code indicates the clutch is not performing as expected. The …Dec 5, 2023 ... I made an expensive mistake, I put my faith in these diagnostic flow charts. 2012 freightliner cascades After treatment control module ...If I need two or more onion’s worth—or have simply run out of stove space—I’ll caramelize them in the oven. Caramelizing onions always takes longer than you think it is going to. T...Electronic phase protector is used to protect compressor motors or other three phase motors from voltage faults. Expert Advice On Improving Your Home Videos Latest View All Guides ...I was also slightly rushed for work, so did not have time to tear into anything. Also, there is no MIL on the dash, which tells me it OK to drive. From what I understand, CAB codes are temperamental. Any insight would help. Thanks::Fault::-CAB 33-SPN 520403-Fail 31::Truck Info::-2012 Freightliner Cascadia (last 8 of Vin: CSBV9904)THIS IS ONE POSSIBILITY ON CLEARING CODES SNP 3361/ SNP 5246 / SNP 4364 ON FREIGHTLINER CASCADIA , THIS CLEAR CODES ON MY TRUCKhttps://youtu.be/t1yuZtAirlwSfu 164/ sid 254 fail 14 code on cascadia 2010, Freightliner Cascadia DD15/2010, Nothing, No - Answered by a verified Technician. We use cookies to give you the best possible experience on our website. ... I have a Cascadia freightliner 2010 dd15 fault code eng high 128s155 00 did the for regen, ...Freightliner codes are obtained through diesel engine parts sites, such as DieselServiceParts.com. The site provides a long listing of codes that enable truckers and mechanics to d... Unseated pins. 6. Damaged wire. 7. Faulty SCR inlet NOx sensor. 8. Faulty Aftertreatment Control Module (ACM). The 520363 fault means "Selective Catalyst Reduction Inlet NOx Sensor Circuit Failed Open." Usually this fault means the sensor has completely failed. Oct 17, 2013 · 7. 0. Oct 17, 2013. 0. Good Evening all !!!! My Freightliner Cascadia has a code, but I don't find its explain in software help, who know it pls tell me. SPN 520761 FMI 5. Axle Temperature Center Trans Temperature Feedback - Current Below Normal Or Open Circuit. SSAM Fault 520197/31 - MQ Switch Malfunction Troubleshooting Applicable Vehicles New Cascadia Symptoms: Active SSAM fault code 520197/31; Cabin CAN switches inoperative, including hazard lights Troubleshooting: Refer to G66-01087-001 for MSF wiring diagrams. Found in PartsPro module 860.I have a 2013 Freightliner Cascadia with the fault code eec 61 spn 435 3. Both check engine lights are on. The truck runs with no problems though....

Some common airbag fault codes include code numbers 12, 13, 14, 21, 22 and 23. Airbag fault code number 12 refers to the battery voltage being low. Code number 13 informs the drive...

Feb 23, 2020 ... Comments104 ; Freightliner Detroit Check Engine Codes. Double D Distribution · 111K views ; Prime Inc. Makes Public Announcement To 9442 Truck ...Dd15. I am attaching the description, testing and wiring diagrams for code SPN 3464 FMI 31 Intake Throttle Valve. I hope this helps. Could it be a bad acceleration pedal too will this code cause no acceleration. Yes this code will cause no acceleration.Oct 13, 2018 ... DEF problems? · Detroit DD13/15/16 - SCR NOx Conversion Eff. · Adam Savage's Miniature Vault Door Build! · ATS One Box Design Freightliner...What is SPN 2631 FMI 1. In simple terms, you have low airflow in your engine somewhere. This problem may be due to a leak or a blockage somewhere in your air intake system. The two places to check first will be the air filter and the air inlet pipe to the turbocharger. If the air filter is dirty, you either need to use high-pressure air to ...If you do not know how to reset fault codes on Freightliner Cascadia, here’s what you can do: 1. Turn off the battery switch for 15 minutes. 2. While waiting, check the oil level, coolant level, and the check engine lights. 3. After that, turn the knob back to the on position but do not start the truck immediately. 4.Bendix SPN 1045 FMI 2. This fault code system is a bit different from the SPN FMI code system. It relies on the blink factor and if you are not careful, you may miscount and be led to the wrong fault code. If you look at the fault code list for Bendix, you will find it under the Misc. DTC code list. The blink code is on the left-hand side and ...Unseated pins. 6. Damaged wire. 7. Faulty SCR inlet NOx sensor. 8. Faulty Aftertreatment Control Module (ACM). The 520363 fault means "Selective Catalyst Reduction Inlet NOx Sensor Circuit Failed Open." Usually this fault means the sensor has completely failed. CASCADIA MAINTENANCE MANUAL Models: CA113DC CA113SLP CA125DC CA125SLP STI-478-6 (02/03/2022) Published by Daimler Truck North America LLC 4747 N. Channel Ave. Portland, OR 97217 Getting into a car accident can cause even the most experienced driver to become very shaken up. If you’re not at fault, the other driver may try to pay you cash for your repairs, ... 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. Connect ...

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Freightliner codes are obtained through diesel engine parts sites, such as DieselServiceParts.com. The site provides a long listing of codes that enable truckers and mechanics to d...2011 Freightliner Cascadia fault code spn 2631 fmi 1 followed the diag tree on this one several times code keeps returning smoke control is at 1.0000 when pulling. Unit has 449,000 miles on it pulled venturi and hot pipe to EGR cooler very sooted up my question is would a egr cooler keep making this code return.What is SPN 2631 FMI 1. In simple terms, you have low airflow in your engine somewhere. This problem may be due to a leak or a blockage somewhere in your air intake system. The two places to check first will be the air filter and the air inlet pipe to the turbocharger. If the air filter is dirty, you either need to use high-pressure air to ...The ADs are identified in DiagnosticLink by the magic wand icon next to the fault, and the word "Advanced" label in the "Troubleshooting Type" field. SCR NOx Conversion Efficiency. SPN 4364/FMI 17. DescriptionThis Code Sets When the Aftertreatment Control Module (ACM) Detects Poor Selective Catalyst Reduction (SCR) NOx Conversion Efficiency.CAB 33 is a general cabin SAM fault, you need to get a more specific message by pushing the square button next to the display while the truck is stopped. It will go from daig to fault, it was hit or miss when I had a fault on mine, as to whether I could get it to display the specific fault code.b. No; update the ACM using the latest server information. Perform the repair verification. If the fault returns, Go to step 4. 4. Check for other emission-related fault codes. Are there any Selective Catalyst Reduction (SCR) or Diesel Particulate Filter (DPF) related fault codes present? a. Yes; diagnose and repair the emission-related fault ... When Fault Code Descriptions do not provide the level of detail needed to diagnose an issue i.e. "too vague". This may also be useful in cases where multiple codes have identical fault descriptions. How to Use For example using slash notation (SA/SPN/FMI) Fault: 11/1049/3 - Pressure Sensor 1 / Analog input 1 Communication Number: SB41-013, Date: 2020-03-17. Category: 100000 POWER TRAIN. Summary: Freightliner Service Bulletin for Midship Bearing Replacement for built vehicles with driveshafts SPL140, SPL170 or SPL250 with first order driveline vibration. Communication Number: SF576, Date: 2020-03-17.I was also slightly rushed for work, so did not have time to tear into anything. Also, there is no MIL on the dash, which tells me it OK to drive. From what I understand, CAB codes are temperamental. Any insight would help. Thanks::Fault::-CAB 33-SPN 520403-Fail 31::Truck Info::-2012 Freightliner Cascadia (last 8 of Vin: CSBV9904)If active fault codes display during start-up or at any other time, make a note of the fault code and take the vehicle to an authorized Freightliner service facility ... then take the vehicle to an authorized Freightliner …2011 Freightliner Cascadia fault code spn 2631 fmi 1 followed the diag tree on this one several times code keeps returning smoke control is at 1.0000 when pulling. Unit has 449,000 miles on it pulled venturi and hot pipe to EGR cooler very sooted up my question is would a egr cooler keep making this code return.a. Yes; repair those fault codes first. b. No; Go to step 3. NOTICE: Do not attempt to operate engine with the DEF lines disconnected. DEF pump runs and circulates DEF through the system at a limited rate (default) to aid in system cooling. WARNING: PERSONAL INJURY ….

If active fault codes are displayed on the diagnostic information screens, make a note of the fault code and text message, then take the vehicle to an authorized Freightliner service facility See Fig. 4.19 for a diagram of the diagnostic information screens.I have a 2011 Freightliner Cascadia. I have two Fault codes. HVAC 025 SPN000876 Clutch Cir 11 N SAMCAB 033 SPN521014 B BLDR-TURN LT 03 N I had the A/C on today and it never seemed to get cold. Any ide … read moreIf you’re driving a Freightliner, code EEC 61 is never a good thing to see. JustAnswer.com. ProblemSolved. ... freightliner code eec 61 eec 61 freightliner eec 61 ee61 engine code eec code freightliner cascadia fault code eec 61 solid engine light on freightliner freightliner cascadia engine codes what does eec mean dd15 engine ...The Spn 3238 Fmi 2 problem code is about Nox Out Sensor Not Ready After Dewpoint Enable Check: Aftertreatment 1 Exhaust Dew Point Data Erratic, Intermittent Or Incorrect. The last 5 words are from the FDMI portion of the code. To learn more about this code and what to do to fix it, just continue to read our article.This question is about Car Insurance @lilah_c • 01/20/21 This answer was first published on 01/20/21. For the most current information about a financial product, you should always ...THIS IS ONE POSSIBILITY ON CLEARING CODES SNP 3361/ SNP 5246 / SNP 4364 ON FREIGHTLINER CASCADIA , THIS CLEAR CODES ON MY TRUCKhttps://youtu.be/t1yuZtAirlwFreightliner Business Class M2 Fault Codes List – Automated-Manual Transmissions. Fault Code Guide (MID 130 SIDs) SID FMI Text Message Failure Reason 18 02 Prim Selector Erratic The shift lever does not shift gears. 33 03 MultiPress Ind Short Hi The hydraulic pressure sensor circuit is shorted…. Freightliner Fault Codes.Replace the oil pressure sensors all the pressure switches. Replace the oil pressure sensors all the pressure switches went down except for one I have an eec 0.61 spin 32 5102 pressure DPF still on the … read more. 2915 Freightliner cascadia dd13 code SPN3719. FMI 0 TRUCK. 2915 Freightliner cascadia dd13 code SPN3719. Freightliner cascadia fault codes, May 19, 2015 · I have a 2011 Freightliner Cascadia with a solid ABS light that stays on after start-up and never goes off. I also have an ABS 11 fault code (SPN 793). From what I can gather on the internet, this fault code is referring to my Left 3rd axle wheel speed sensor. , The second part is the SPN (suspect parameter number). This indicates what is being reported as an issue. This is the part of the code you have. In this case, 175 indicates an oil temperature issue. The last part is the FMI (fault mode indicator) this will indicate whether this is a circuit issue or if high oil temperature is being reported., 2016Freightliner cascadia evolution amber check engine light stays on with 3 fault codes involving DEF: 1) Poor DEF quality. Check DEF. Diagnotic code: SPM 3364 FMI 2. 2) ... We have a 2015 freightliner cascadia, dd15 engine, codes spn 5357 fmi 16, spn 102 fmi 18, ..., 2011 freightliner cascadia has a eng 1 fault code Discussion in 'Freightliner Forum' started by Tower411, Oct 22, 2012. Oct 22, 2012 #1. Tower411 Bobtail ..., Freightliner Forum > Code eec 61 freigtliner cascadia 2012 ... This answer was for a 2012 Cascadia w/ a Detroit DD15. EEC 61 is only part of the fault code. If you hit the square button again,write it down, then hit it again, then write that down. it should follow up with some more additional information that could help. ..., Here is the testing and troubleshooting procedure for this fault code: The Motor Control Module (MCM) monitors the rail pressure and when rail pressure deviation is greater than 200 bar for eight seconds, the MCM sets the code. ... 2017 freightliner cascadia 122sd. Engine codes: spn973, fmi 9, and spn2011, fmi 9. ..., Go to step 5. to verify repair. 5. Clear fault codes. Turn ignition OFF and disconnect DiagnosticLink. Wait five minutes for all modules to power down. Verify repair. ANDY THIS IS LARRY WITH GATES DIESEL. YESTERDAY YOU WANTED ME TO DRIVE THAT 2008 FREIGHTLINER THAT HAS THE CODE SPN 3719 FMI 0., SPN 5357. FMI 18. Fuel quantity low detected. if any other fault codes are active, fix those first. Probable causes: 1) failed intake manifold temperature sensor. 2) Intake manifold temperature sensor connector/harness. 3) EGR delta P sensor. 4) EGR delta P sensor connector/harness., The ECU 128 code in Freightliners is similar to the check engine light. It is not a fault code on its own, however, it indicates that there is a problem with the engine which can easily be diagnosed with a scanner. To understand what the ECU 128 code means, it is important to know what it is the ECU does. Known as the engine computer or brain ..., The Spn 3238 Fmi 2 problem code is about Nox Out Sensor Not Ready After Dewpoint Enable Check: Aftertreatment 1 Exhaust Dew Point Data Erratic, Intermittent Or Incorrect. The last 5 words are from the FDMI portion of the code. To learn more about this code and what to do to fix it, just continue to read our article., No; reprogram the CPC4 with the correct information as necessary. Go to step 3. to verify repair. 3. Clear fault codes. Turn ignition OFF and disconnect DiagnosticLink. Wait five minutes for all modules to power down. Verify repair. All information subject to change without notice. 2 20-14., 2016 Freightliner Cascadia Technical Service Bulletins. ... Resolves an issue where fault codes may be introduced after reprogramm . Communication Number: WP20-006, Date: 2020-04-23 Category: 350000 EQUIPMENT Summary: Warranty Policy Letter for Handling for Authorized Service Location Part Transfers. To promote 24-hour …, 2015 Freightliner Cascadia with auto transmission, Eaton. VIN BR6264 Getting faults: spn 788 fmi 7 spn 522 fmi 7 Truck - Answered by a verified Technician ... Fault Code 26 - Clutch Slip J1587: MID 130 SID 55 FMI 10 J1939: SA 3 SPN 522 FMI 10. Overview. This fault code indicates the clutch is not performing as expected. The …, Fault Code: Description: 108: 13 Ambient Air Pressure Signal Not Available via CAN: 110: ... 2019 Freightliner Cascadia DD15 ACM fault code 520349 14. 0. Reply. Disclaimer: We cannot guarantee the accuracy of all trouble codes. We try and make them as accurate as we can, but sometimes we all make mistakes., 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.”. There are approximately 457 engines affected by this Field Service Campaign., I have a 2011 Freightliner Cascadia The code is: SFU 49 Thanks in advance harvinderdeol, Dec 26, 2013. harvinderdeol, Dec 26, 2013 #1. Trucking Jobs in 30 seconds., Parameter Codes (PID) 51 - 63. 51 Position of the throttle pedal - THROTTLE POS - Throttle Pos 52 Intercooler Temperature - INTERCLR TEMP - Intercool TEMP, The ADs are identified in DiagnosticLink by the magic wand icon next to the fault, and the word "Advanced" label in the "Troubleshooting Type" field. SCR NOx Conversion Efficiency. SPN 4364/FMI 17. DescriptionThis Code Sets When the Aftertreatment Control Module (ACM) Detects Poor Selective Catalyst Reduction (SCR) NOx Conversion Efficiency., Don't forget to Subscribe! - https://goo.gl/XtV9CJCheck out our Merch! - https://thedieseler.myteespring.co/Support these videos on …, 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.”. There are approximately 457 engines affected by this Field Service Campaign., New Cascadia - built after 9/9/2019 Symptom The following fault code is active: VRDU 524127/9 - Lost Communication with the MPC Issue VRDU fault code 524127/9 is often caused by lack of ignition supply to the MPC, which causes it to stop communicating. This is usually occurs when voltage is low as outlined in the discussion below:, If you own an AOTG24KMCA Fujitsu air conditioning unit, you may occasionally encounter fault codes that can disrupt its normal operation. These fault codes are designed to help ide..., 2016 Freightliner Cascadia dd15 Detroit engine. I have a fault code on. It istxld: 61 SPN: 3556 Aftertreatment 1 hydrocarbon Doser 1 FMI 18 (low-moderate severity) count 1Can you help me with what thi … read more, About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright ..., It is a pleasure to help anyway I can. SPN 2011/FMI 9 - GHG14. J1939 Message is Missing from Source Address 11 (dec) . This code sets when there is a loss of communication from the ABS module. J1939 message is missing from source address 11 (dec) DescriptionJ1939 Message is missing from source address 11 (dec) Monitored …, Freightliner Codes. Trouble Code. Fault Location. Probable Cause. P1000 – P1099 (Fuel and air metering and auxiliary emission control) P1000. Ignition coil, 5 -primary circuit range/performance. Wiring, connectors, ignition coil 5, ECM. P1001., All Freightliner New Cascadia trucks. Symptoms RDF SPN 523005 FMI 7 and VRDU SPN 524042 FMI 19 Fault Codes Issue RDF mounting misaligned after front bumper repair, replacement, or front end collision. Solution Inspect the RDF for damaged, bent, broken, or loose mounting hardware., What is SPN 2631 FMI 1. In simple terms, you have low airflow in your engine somewhere. This problem may be due to a leak or a blockage somewhere in your air intake system. The two places to check first will be the air filter and the air inlet pipe to the turbocharger. If the air filter is dirty, you either need to use high-pressure air to ..., Do not paint or affix items over the distance sensor cover. If attachments are mounted in front of the distance sensor, such as a crash guard, they can impair the operation of the distance sensor. Fig. 5.1, Forward Radar Location. To avoid malfunctions, clean the cover of the distance sensor regularly. , Oct 13, 2017 ... Comments30 · Freightliner Cascadia DD13 DD15 DD16 fuel filter module check valve hard start crank doesn't start · DD15 ENGINE common problems OM&..., a. Yes; repair those fault codes first. b. No; Go to step 3. NOTICE: Do not attempt to operate engine with the DEF lines disconnected. DEF pump runs and circulates DEF …, Working on a 2020 freightliner cascadia DD15 VIN#LLJX1521 truck only goes up to 55mph. It has fault codes...on MCM has 521049-31 & 521052-31. So far i have replaced DOC inlet and outlet temp sensors.. … read more, 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. Connect ...