Freightliner cascadia diagnostic codes

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

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 to step 5. 5. Is …The cascadia i used to drive had that code for 3 days before it started blowing blue smoke and derated the engine. The truck has about 127xxx miles. ... Mar 30, 2015 0. Eec61 is the generic fault code for the emission system. You have already derated to 85% and you have about 1000miles before it derates to 55mph then you have another …The check engine light on a Ford F-250 comes on when your truck needs regular maintenance or when there is a problem with the truck. The on-board diagnostic computer, or OBD comput...An invaluable resource for technicians and mechanics working on Freightliner Cascadia trucks. Includes vehicle overview, maintenance procedures, diagnostic procedures, ... It contains step-by-step instructions for diagnosing specific symptoms, conducting tests, and interpreting diagnostic codes. These procedures facilitate accurate and ...Detroit Connect Virtual Technician ®. Virtual Technician is the integrated remote diagnostic system for Freightliner trucks equipped with Detroit ® engines. With Virtual Technician, fleets and owner-operators know within minutes when their engine or after treatment system experiences a fault event, the severity of the fault and when, where and how to best fix the issue causing the fault.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. This fault code is for your NOx outlet sensor. Thoroughly inspect the wiring harness and connector pins going to your NOx outlet sensor for any type of corrosion or damage as well as any open circuits. If the wiring checks okay with 100% certainty, change the outlet sensor and see if your problem resolves.

2016 Freightliner Cascadia. code is on TxId: 1 SPN: 3464 –. 2016 Freightliner Cascadia. code is onTxId: 1 SPN: 3464 – Engine Throttle Actuator 1 Control Command FMI: 16 (High—moderate … read more.Here I show you what code SPN 4354 FMI 5 can be! AFT 1 SCR Catalyst Reagent LineHeater 1Current below Normal or Open Circuit. Here we found the cable was cut...2010 Freightliner Cascadia with the following fault codes on…. 2010 Freightliner Cascadia with the following fault codes on dash. SAM controller open 249s254 05. Radar SA42 SPN000639. J1939 Network 7. SAM SA33 SPN521921 05. These codes appear everytime I start the truck. Answered in 1 hour by:I have 2017 FreightLiner Cascadia 3AKJGLDR3HSHR5887 Vehicle Attributes Engine: 6 - 14.8L 903ci DIESEL type DD15 - Submodel: 125 Body Type: Tractor Truck - Long Conventional Drive Type: 6 X 4 One Active Code DPFFilter Efficiency Too Low No Associated Parameter SPN 520349 FMI14.I have Freightliner cascadia 2018 it has fault code 520342 mode 16. Freightliner cascadia - Answered by a verified Technician. We use cookies to give you the best possible experience on our website. By continuing to use this site you consent to the use of cookies on your device as described in our cookie policy unless you have disabled …

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.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.• If the fault code "33/521940/12 - rain/light sensor - general DTC timeout fault" becomes active, replace it with the old sensor (A 960 820 05 26 or A 960 820 06 26) until the new sensor (A 960 820 07 26) is ... > New Cascadia Freightliner Service Bulletin, 01/21/2021 Page 1. 5. Using a sustained pulling motion, carefully remove the RLS gel. Starting at …6. Start the engine, using Diagnostic Link run the NOx Sensor Verification test located in the drop down menu under Actions / Aftertreatment. 7. Did the NOx Sensor Verification test pass? a. Yes; Go to step 8. b. No; replace the inlet NOx sensor. Refer to section "Removal of the Selective Catalytic Reduction Inlet NOx Sensor". 8.

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SPN: FMI: MCM2.1 Fault Code Description GHG14: 51: 2: Intake Throttle Position Deviation Error: 51: 3: Intake Air Throttle Circuit Failed High: 51: 4: Intake Air Throttle Circuit Failed Low7.68K subscribers. Subscribed. 116. 23K views 2 years ago #OwnerOperator. In This Video I Will Be Showing You How You Can Pull Your Fault Codes Right From Your Dashboard On A 2017 Freightliner... 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. Dec 16, 2023 ... How to clear the SCR closed loop at maximum limit SPN 520372 FMI 16 fault code. If this fault code is ignored long enough it will trigger ... Here I show you what code SPN 4354 FMI 5 can be! AFT 1 SCR Catalyst Reagent LineHeater 1Current below Normal or Open Circuit. Here we found the cable was cut... Freightliner faults? for Drivers just learning how to look them up

Sep 22, 2015 · 2010 Freightliner Cascadia with the following fault codes on…. 2010 Freightliner Cascadia with the following fault codes on dash. SAM controller open 249s254 05. Radar SA42 SPN000639. J1939 Network 7. SAM SA33 SPN521921 05. These codes appear everytime I start the truck. Answered in 1 hour by: I am dealing with a p4 Cascadia, where the original codes were 703/5, 704/5, 520213/31, 520727/13, and 520525/5. Numerous techs have been on this between wabco and freightliner the 3/2 valve the abs ecu, the trailer modulator, the esc module all have been replaced. There is a long list of wiring checks that have been done.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. ... 2019 …Freightliner Cascadia 2015 DD15 , code SPN -1590, SAE J1939, SPN- 639, SPN-5023 … read more.Freightliner Fault Codes. The J1587, J1708 & The J1939 System . Freightliner Fault Code List (PID, MID, SID) . Freightliner MID / Description . Freightliner Parameter Codes (PID) 51 – 63 . Parameter Codes (PID) 64 – 97 . Parameter Codes (PID) 98 – 127 . Parameter Codes (PID) 154 – 183 .In This Video I Will Be Showing You How You Can Pull Your Fault Codes Right From Your Dashboard On A 2017 Freightliner CascadiaWelcome Back Level Up Family! ...600 satisfied customers. Code spn 517653 fmi 7 2015 Freightliner Cascadia. Truck. Yes Tried to hit starter N also check batteries Seems also I got 12.2 volts so that's prob y u can't start truck But I got lots of faulty cosws Codes … read more.5. Clear codes and cycle ignition OFF. 6. Turn the ignition ON (key ON, engine OFF). 7. Does the code return? a. Yes; replace the AP, clear codes and verify repair. Refer to Original Equipment Manufacturer's (OEM) literature. b. No; Go to step 8. 8. Gently wiggle pedal and harness connector to simulate road vibration. 2 SPN 2623/FMI 2 - GHG14I have 2017 FreightLiner Cascadia 3AKJGLDR3HSHR5887 Vehicle Attributes Engine: 6 - 14.8L 903ci DIESEL type DD15 - Submodel: 125 Body Type: Tractor Truck - Long Conventional Drive Type: 6 X 4 One Active Code DPFFilter Efficiency Too Low No Associated Parameter SPN 520349 FMI14.

b. No; update the MCM software level and perform the verification procedure in the table above. If the fault code does not return, release the vehicle. If the fault code returns, Go to step 4. 4. Inspect the front grill for air blockage including winter fronts, plows, or large hose reels. Is any blockage found? a. Yes; repair as needed. b. No ...

I just got a PM done on my 2020 Cascadia and after driving about 100 miles the check engine light came on. When I checked the diagnosis it’s giving me a ACM code 3223 and 520363 ATS electrical system problem detected.SPN 3510 FMI 4 Cummins. The Cummins fault code for this SPN FMI number is #187 and you will find it on page 1 of the complete Cummins code list we provided previously. What this sheet says this code means is as follows: “ Sensor supply voltage 2 - Sensor Supply 2 Circuit - Voltage below normal, or shorted to low source”.Summary: Service Bulletin for Marker Light Gasket Leaks, 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: WI20-008, Date: 2020-04-27.I have a 2014 Freightliner with dd16 engine both check engine lights or on with fault codes eec 61 ,4334 spn, fail 07 fault code tcu 3 , 70 spn , fail 14 , ... 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. …An invaluable resource for technicians and mechanics working on Freightliner Cascadia trucks. Includes vehicle overview, maintenance procedures, diagnostic procedures, ... It contains step-by-step instructions for diagnosing specific symptoms, conducting tests, and interpreting diagnostic codes. These procedures facilitate accurate and ...Second Opinion] 2016 Freightliner Cascadia dd15 Detroit engine. I have a fault code on. It is txld: 61 SPN: 3556 Aftertreatment 1 hydrocarbon Doser 1 FMI 18 (low-moderate severity) count 1 Can you hel ... 2915 Freightliner cascadia dd13 code SPN3719. FMI 0 TRUCK stop engine light come on and the truck stop ...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... Freightliner Fault Codes - Free download as PDF File (.pdf) or read online for free. Freightliner Fault Codes600 satisfied customers. Code spn 517653 fmi 7 2015 Freightliner Cascadia. Truck. Yes Tried to hit starter N also check batteries Seems also I got 12.2 volts so that's prob y u can't start truck But I got lots of faulty cosws Codes … read more.

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Checking Voltages J1939/H1939. • To test the voltage the truck should be in the state of ignition ON, engine OFF, and batteries connected. NOTE: Battery condition is important and should be in the range of 12.6V and 12.4V. Test the voltage at the diagnostic connector between pins A & C.2019 Freightliner Cascadia DD15Initial diagnostic and troubleshooting of intermittent fault code SPN 4364 FMI 17 "Nox Sensor Valid but out of normal range."N...• For termination resistor locations refer to SS 3920 J1939 Terminating Resistor Locations - Cascadia Diagnostic "Truck" CAN network Test the resistance between pins H & J at the diagnostic connector. J1939/H1939 500k baud network Test the resistance between pins C & D at the diagnostic connector. Resistance Values for both networks should be …On a 2017 freightliner Cascadia VIN. 3AKJGLDR8HSHF1248 I'm getting codes SPN 520372 FMI 16, SPN 521049 FMI 31, SPN 521050 FMI 31, and SPN521052 FMI 31. The DEF qualit, quantity and doser are workingpr …Yes; perform a parked regeneration to verify repairs and clear fault codes. b. No; Go to step 2. 2. Using a refractometer from the DEF Test Kit W060589001900, measure the DEF percentage. Is DEF percentage between 28 to 36%? a. Yes; Go to step 3. b. No; clean/flush the DEF tank, then Go to step 7. Refer to section "Flushing of the GHG14 Diesel Exhaust …If SPN 4356 FMI 5 is Set. The other code that may appear with SPN 4357 FMI 5 is SPN 4356 FMI 5 and that code stands for - Scr Line Heater #3 Circuit Failed Open. The repair is going to be similar to the previous repair with one minor difference. Instead of repairing heaters 2 & 4, you will be repairing the #2 pin of line heaters 3 & 4.I have a check engine light with code SPN:639 FMI:9 in my automatic freightliner Cascadia. It powers on but truck won’t - Answered by a verified Technician ... I have a 2014 freightliner vin# ***** with fault code side 231 fmi 9. No start.. I need a troubleshooting guide and wiring schematics for this truck. ... I Have a 2015 Freightliner Cascadia; ser# …If fault does not re-occur, clear code and release vehicle. If starter does not properly engage the flywheel some possible causes may be: Starter motor alignment Starter drive damage Incorrect starter installed Flywheel damageIt still maybe a MCM issue. Jesse Gutierrez 430 posts since Mar 5, 2017 Re: DD13 ghg17 cascadia with spn677 fmi31 Oct …Fault code SID 155 Fail 00 is desplaying, 09 Frieghtliner Columbia 112 with mercedes engine, Check fuses and sensors, - 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, lasted 40 min, … a. Yes; Go to step 2. b. No; update the MCM software level and perform the verification procedure in the table above. If the fault code does not return, release the vehicle. If the fault code returns or if unable to duplicate verification cycle, Go to step. 2. 2. Turn the ignition ON (key ON, engine OFF). ….

2 SPN 521049/FMI 31 - GHG17 DEF Inducement DEF Lamp Active Table 1. SPN 521049/FMI 31 Description This Code Sets When There is a Code Present for the Diesel2019 Freightliner Cascadia DD15Initial diagnostic and troubleshooting of intermittent fault code SPN 4364 FMI 17 "Nox Sensor Valid but out of normal range."N...600 satisfied customers. Code spn 517653 fmi 7 2015 Freightliner Cascadia. Truck. Yes Tried to hit starter N also check batteries Seems also I got 12.2 volts so that's prob y u can't start truck But I got lots of faulty cosws Codes … read more.What is Freightliner code SPN 2791 FMI 2? According to one data sheet, this is the problem that the code is warning you about- DATA ERRATIC, INTERMITTENT, ... The last step will include replacing the EGR actuator if the SPN 2791 FMI 14 fault code is active during the transition from step 5 to step 6. SPN 2791 FMI 18. This code only has 3 …Sep 22, 2015 · 2010 Freightliner Cascadia with the following fault codes on…. 2010 Freightliner Cascadia with the following fault codes on dash. SAM controller open 249s254 05. Radar SA42 SPN000639. J1939 Network 7. SAM SA33 SPN521921 05. These codes appear everytime I start the truck. Answered in 1 hour by: Toshiba laptops include a built-in diagnostic tool so you can troubleshoot items on your Satellite computer that do not appear to work properly. The tool cannot fix the problems it...Weekend 2 pm CST for the day. code 4357. The possible causes for this fault are: 1. Open between ACM 120-pin connector and line heaters 2 and 4. 2. Fault in the wire between the harness side of line heater 4 connector and the ACM. 3. Out-of-range resistance on the heating element side of line heater 4.The Freightliner Cascadia is one of the most popular and reliable heavy-duty trucks on the market today. It offers superior performance, reliability, and fuel efficiency, making it... Freightliner cascadia diagnostic codes, 2 SPN 4364/FMI 1 - EPA10. Table 1. Connect DiagnosticLink ®. Turn the ignition ON (key ON, engine OFF). Was another emission component-related fault code repaired prior to this step? Yes; perform a parked regeneration and recheck for the fault code. If the fault code returns, Go to step 4. No; Go to step 4., I am dealing with a p4 Cascadia, where the original codes were 703/5, 704/5, 520213/31, 520727/13, and 520525/5. Numerous techs have been on this between wabco and freightliner the 3/2 valve the abs ecu, the trailer modulator, the esc module all have been replaced. There is a long list of wiring checks that have been done. , If SPN 4356 FMI 5 is Set. The other code that may appear with SPN 4357 FMI 5 is SPN 4356 FMI 5 and that code stands for - Scr Line Heater #3 Circuit Failed Open. The repair is going to be similar to the previous repair with one minor difference. Instead of repairing heaters 2 & 4, you will be repairing the #2 pin of line heaters 3 & 4., five seconds, the gear display begins flashing two-digit fault codes. If there are no active codes the gear display will show code 25. If there are inactive codes PD (Product Diagnostic mode) will be displayed. The vehicle will not start in PD mode. You must turn vehicle key OFF and allow the system to power down to exit PD mode before restarting., I have a 2019 freightliner Cascadia with a spn 3363 code when reading the check engine light. What are the possible - Answered by a verified Technician. We use cookies to give you the best possible experience on our website. ... Recently had 2 fault codes come up and later clear themselves. SPN 1569 FMI 16 and SPN 3363 FMI 31. …, - YouTube. Freightliner Cascadia 2019: Diagnostics Menu. Let’s talk DIESEL. 7.25K subscribers. Subscribed. 355. 59K views 5 years ago. Today we check it out the diagnostics menu …, SPN 520306/FMI 4 - GHG14 This diagnostic is typically Injector Cylinder #2 Needle Control Valve Abnormal Operation (MIN) Cold. Without the 71 in front of it it is an injector code for cylinder 2. That also explains the D rate of your power by the ECM. The wiring in connections going to your injector are good, replace the faulty injector., Hello sir I have Freightliner Cascadia. It has VGT actuator fault codes. I checked and found the VGT actuator was seized. Replaced it. Then it started showing 5V fault codes that was turbo intake wiring repaired that as well. Now there is no 5V code active. But I can’t calibrate VGT slow learn it still shows the reference sensor fault., I got Spn 96 ICU 23 Fail 05 on a DD15 2013 Freightliner Cascadia. The code appeared immediately after truck had been washed in a truck wash. I think the high water pressure causes the connectors in the wiring for fuel level to loosen up or disconnect. ... May 25, 2019 #4. gio_mi78 Bobtail Member. 1 0. May 25, 2019 0. diagnostic went on …, • If the fault code "33/521940/12 - rain/light sensor - general DTC timeout fault" becomes active, replace it with the old sensor (A 960 820 05 26 or A 960 820 06 26) until the new sensor (A 960 820 07 26) is ... > New Cascadia Freightliner Service Bulletin, 01/21/2021 Page 1. 5. Using a sustained pulling motion, carefully remove the RLS gel. Starting at …, The Freightliner Cascadia J1939 Fault Codes – System Overview serves as a vital reference for technicians and mechanics working on Freightliner Cascadia trucks. By understanding the J1939 diagnostic system, interpreting fault codes, following diagnostic procedures, and adhering to safety precautions, technicians can effectively diagnose and ... , A 2011 freightliner Cascadia with code spn3556 fmi 1 both Hi ***** On a 2011 freightliner Cascadia with code spn3556 fmi 1 both check engine lights on, had replace Doser valve and Doser injector. On running engine around 1400rpm makes this "rattling noise. k …, Decent scanners can give your information on your Freightliner's O2 sensor data, batter power, emissions information, trouble code resets, oil light service reset and even some top line tools will be able to perform forced diesel particulate filter (DPF) regeneration on your Cascadia. Diagnoses can be made right across the spectrum of modules ... , This manual contains service information for the WABCO Anti-Lock Braking System (ABS) and ABS with Automatic Traction Control (ATC) for trucks, tractors and buses. Use this manual for. D version, cab- and frame-mounted and D Basic Electronic Control Units (ECUs). For diagnostic and testing procedures for systems with C version ECUs, use ..., Component Codes (MID) MID / Description / Old Text Message / New Text Message * 128 Engine # 1 ENGINE ENG 130 automatic transmission – † Trans 136 Anti-lock Brake System (ABS) TRCTR BRK Brake 140 Panel, Left INSTRCLST Instr 142 Panel, Right # 1 INSTRCLST MGMT 172 Diagnostic System … See more, Noregon offers Freightliner truck diagnostic tools with advanced functionality beyond a standard code reader or scanner. Our solutions reduce your reliance on hard-to-use OEM software all in one or two software products. We offer a range of options customizable to your particular needs and will work with you to identify the products offering ..., 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 …, 6. Start the engine, using Diagnostic Link run the NOx Sensor Verification test located in the drop down menu under Actions / Aftertreatment. 7. Did the NOx Sensor Verification …, How to Reset Fault Codes on Freightliner Cascadia. The Cascadia is the most popular model among Freightliner trucks. Thus, many truckers also use this and encounter similar issues. Since a truck needs regular repairs, you must reset the fault codes after a diagnostic test or maintenance to prolong your truck’s life. If you do not know how to …, 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. , Diagnostic code spn 647, fmi 5. What do you think is the reason? ... Freightliner Cascadia Evolution 2016 DD15 Thank you! Attached Files: DF64FDA2-1CBD-447D-AEBC ..., This fault code occurs or is logged when battery voltage drops below 6 V to the ECM or control modules on the truck. I would recommend fully charging all of your batteries and then testing each one individually with a load tester and digital battery tester to look for any bad cells or other internal problems with any of the batteries. Clean all …, 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., Here I show you what code SPN 4354 FMI 5 can be! AFT 1 SCR Catalyst Reagent LineHeater 1Current below Normal or Open Circuit. Here we found the cable was cut... , 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. , I have a 2011 Freightliner Cascadia. I have two Fault codes. I had the A/C on today and it never seemed to get cold. Any ideas on where two start. 1. check wiring to ac clutch for broken or frayed wires. check the connector for damaged pins. 2. check all your lights. make sure all your lights work., 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., Diagnostic code spn 647, fmi 5. What do you think is the reason? ... Freightliner Cascadia Evolution 2016 DD15 Thank you! Attached Files: DF64FDA2-1CBD-447D-AEBC ..., May 12, 2021 ... How To Reset Fault Codes Yourself. Trucking ... fault code. Pedro Fuentes•17K views ... Freightliner Cascadia Blinking Def Light w/ Codes and Derate., Freightliner is like a lot of other manufacturing companies. They have created their own fault code list to make sure their products can be repaired correctly. In …, A frtliner. Its not a car it's a commercial or truck . A frtliner cascadia eith a dd15 … read more. Daniel Wilson. Associate Degree. 17,107 satisfied customers. Tell me what Eng 1 Fault code is. Freightliner Cascadia DD13., 6. Start the engine, using Diagnostic Link run the NOx Sensor Verification test located in the drop down menu under Actions / Aftertreatment. 7. Did the NOx Sensor Verification test pass? a. Yes; Go to step 8. b. No; replace the inlet NOx sensor. Refer to section "Removal of the Selective Catalytic Reduction Inlet NOx Sensor". 8. , Ask Your Own Medium and Heavy Trucks Question. See this pic Now in diagnostic Now in diagnostics these 2 faults Number 1 is this. Technician: Siebert, Kyle. Thats a MIL, Malfunction Indicator Lamp.. 520268/FMI 16 is Fuel Rail Pressure Low. Diag says look into 157/16 codes. Ask Your Own Medium and Heavy Trucks Question. Number 2 is this ...