Scr fault kenworth

Right Front Lamp(s) Fault 2370xx. Left Rear Lamp(s) Fault 2372xx Right Rear Lamp(s) Fault 2374xx. Marker Lamp(s) Fault 2378xx. Clearance Lamp(s) Fault 2382xx Primary Fog Lamps Fault 2388xx. Secondary Fog Lamps Fault 2390xx. Left Trailer Lamp(s) Fault 2396xx. Right Trailer Lamp(s) Fault 2398xx Current Sensor Fault 2579xx. Main Light Switch Fault ...

troubleshooting procedure in the engine’s fault code troubleshooting manual. − If the test DOES NOT COMPLETE, then see the “Aftertreatment SCR System Test Will Not Complete” troubleshooting procedure in the engine’s fault code troubleshooting manual. − If the test reports "Deposit Burn Failed", then the test should continue to run.That is 3 times where the truck got to 50 mph for 3 to 5 miles or 3 separate 1 mile trips. This makes the dosing start and run for 15 minutes. That fault WILL NOT clear if that is not done after the repair and the fault is cleared in the system. It is a huge pain to clear when you are in the city.Through Standard Warranty (includes Extended Warranty) Kenworth will pay for parts at dealer net plus applicable mark-up and labor: 1.0 hour labor if the inlet screen is plugged and the corrosion on the heater is flaking off to remove the DEF Pump, flush the lines, and replace the filters. Use Quick Claim code E222.Scr system ALTERED or fault detected shoe me. 2015 kenwort t680 comunies engine. And also cheak engine is comes on - Answered by a verified Technician We use cookies to give you the best possible experience on our website.Power Reduced due to SCR System Fault with blinking DEF light SCR System Altered … read more. Nich1019. Diesel Technician. Vocational, Technical or Tra... 157 satisfied customers. We have a 2024 Kenworth T880 with the Paccar MX13 engine. We have a 2024 Kenworth T880 with the Paccar MX13 engine. 1.68K subscribers. 24K views 1 year ago. I am back on the road everyone after a bit of time in the shop. The issue was a SCR Code fault caused by issues with the fuse box. Spent the …I have a scr fault code on a 2016 Kenworth with a paccar i have a scr fault code on a 2016 Kenworth with a paccar MX13. the code from davies is a 1514 and says doser issue. I also have the red light on the gauge for the def.

Jan 17, 2023 · At about 1:00 of the video, they show how to remove the doser SCR system altered or fault detected Model Kenworth T680 . scr system fault engine derate in less than 60 minutes We have 2016 Kenworth T680, showing that SCR System Altered or Fault Detected . Kenworth trucks are recognized as the industry standard for quality and reliability DIAGNOSING SELECTIVE CATALYST REDUCTION (SCR) EFFICIENCY FAULTS MODEL E90 (335d) E70 (X5 xDrive35d) SITUATION The Service Engine Soon light is on. The mileage countdown warning to a no start condition is displayed in the Control Display for incorrect exhaust fluid added. One or more of the following fault codes are stored in the DDE: M57Y:Fault Code: 3712 PID: P105 SPN: 5246 FMI: 0 LAMP: Red SRT: Aftertreatment SCR Operator Inducement - Data Valid But Above Normal Operational Range - Most Severe Level. Critical SCR related fault codes have been active for an extended period of time and require immediate attention. Immediate engine power derate.Fault Code That Causes the 5 MPH Derate. Cummins Fault Code – SPN 5246 FMI 0 or 3712. Notification – If your red stop engine light is on. Information – If you notice a critical SCR fault code that has been active for an extended period of time it is necessary for immediate attention!This document will guide the user through determining the cause of fault code 3363-16 (FC1713) on vehicles equipped with SCR. BEFORE replacing any components, verify the DEF tank coolant lines are properly routed and the Diesel Exhaust Fluid Tank Heater Valve (DEFTHV) is facing the proper directionThanks Received: 14 (10 Posts) Posts: 66 Threads: 13. Joined: Dec 2012. 1 01-29-2013, 03:57 AM. fault code on cummins 2010 ISX2 " SCR/DEF. ". insite had 3 faults, 2 of them were the voltage for HTR1, HTR2 for regen. the third fault was" RELAY POWER OUT OF RANGE " for the first 2. I checked all relays and fuses :OK.

Power Reduced due to SCR System Fault with blinking DEF light SCR System Altered … read more. Nich1019. Diesel Technician. Vocational, Technical or Tra... 157 satisfied customers. We have a 2024 Kenworth T880 with the Paccar MX13 engine. We have a 2024 Kenworth T880 with the Paccar MX13 engine. This amount of time will vary, depending on which SCR faults are active. The ECM illuminates the red STOP ENGINE lamp immediately after the diagnostic runs and fails. Engine torque will be reduced. Vehicle speed will be limited to 8 km [5 mi] per hour. This fault code will go inactive once all other active fault codes have been addressed.Fault Code 3714, 3712, 6255, and 6254 Active with No Other Active Fault Codes Fault Code 3714, 3712, 6255, and 6254 Active with No Other Active Fault Codes Core Issue Confirmation Product Affected •All electronically controlled engines ... (SCR) related fault codes. For some units that have a hardwired (analog) diesel exhaust fluid (DEF) tank …Inspect the SCR outlet NOx sensor and harness side connector for bent, spread, or corroded pins. Is any damage found? a. Yes; repair as necessary. Verify repairs. b. No; replace the SCR outlet NOx sensor. Refer to section "Removal of the GHG14 Selective Catalytic Reduction ... Keywords: This is an updated section to reflect fault monitor …

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Dash view, SCR System Fault, Machine determination Derate in <60 mins.. please help me.. Dealer says they cant take you in til Monday. AlexD13, Aug 6, 2016. AlexD13, Aug 6, 2016 #1 + Quote Replies. Trucking Jobs included 30 seconds. Ever month 400 people discover one job with the help of TruckersReport.Technician: Nich1019. There are many possibilities for an SCR system fault these include, but are not limited to: A faulty inlet or outlet nox sensor. A faulty SCR temperature sensor. A faulty DEF pump. A faulty DEF doser. A faulty DEF quality sensor. A wiring issue for one of these components.In the world of telecommunications, BT line faults can be a frustrating and disruptive issue for both individuals and businesses. These faults can result in interrupted phone calls, slow internet speeds, or even a complete loss of service.1. Disconnect the SCR outlet NOx sensor. 2. Inspect the SCR outlet NOx sensor and harness side connector for bent, spread, or corroded pins. Is any damage found? a. Yes; repair as necessary. Verify repairs. b. No; replace the SCR outlet NOx sensor. Refer to section "Removal of the GHG14 Selective Catalytic Reduction Outlet NOx Sensor". 9 04-14SCR System ALTERED OR fault detected. Also increased sweats Also increased sweats in 4 hours. Seek service immediately no alteration have been done to my knowledge no alternation have been done … read more Nich1019 Cummins/Caterpillar Techni... Vocational, Technical or Tra... 6,367 satisfied customers

The dreaded fault code that causes the 5 MPH derate! This fault is related to the “SCR Inducement” which is what regulates your truck to this derate. 2011-2013 EPA10 Trucks. SPN 5246 FMI 0 – SCR Inducement Final Level - Causes 5 MPH Derate; 2014-2019 GHG14, GHG17 Trucks March 20, 2023 by Bikash Roy There are a few things you can do to fix a SCR system fault on your Peterbilt truck. First, check the DEF level and make sure it is full. If it is low, fill it up and see if that clears the error. Next, check all the DEF lines and connections for leaks. If you find any leaks, repair them and see if that fixes the issue.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 check and confirm accuracy with the offering financial insti...RE: Insite Help exhaust (SCR/DEF) service required. This is shop talk by cummins: This fault detects a mechanical malfunction of the DEF dosing valve, or a pin-to-pin short in the DEF dosing valve circuit. Reference the appropriate OEM wiring diagram when troubleshooting circuits that utilize wiring supplied by the OEM.Jul 22, 2019 · i have a scr fault code on a 2016 Kenworth with a paccar MX13. the code from davies is a 1514 and says doser issue. I also have the red light on the gauge for the def. I replaced the def level sensor … read more Sep 17, 2020 · Follow the test procedure and your specs are also covered below. P3844. Code number. P3844. Fault code description. DEF dosing valve - Current too low or open circuit on ECU D374 pin A77 or pin A53. Fault code information. 1 trip MIL 3 drive cycle recovery Readiness group – None Freeze frame type – Comprehensive. Description of component (s) Kenworth Codes; Trouble Code Fault Location; P1000 – P1099 (Fuel and air metering and auxiliary emission control) P101C: BPV position fault while engine is in SCR heating mode: P101D: BPV position fault while engine is not in SCR heating mode: P101E: BPV CAN sensor has permanent governor deviation: P101F: BPV CAN sensor overload: P1020 DIAGNOSING SELECTIVE CATALYST REDUCTION (SCR) EFFICIENCY FAULTS MODEL E90 (335d) E70 (X5 xDrive35d) SITUATION The Service Engine Soon light is on. The mileage countdown warning to a no start condition is displayed in the Control Display for incorrect exhaust fluid added. One or more of the following fault codes are stored in the DDE: M57Y:Check for other fault codes. Are there any air management system (ITV, IMP, IAT, turbocharger etc.) fault codes ... SCR NOx Conversion efficiency low, DD Platform ...

Kenworth Diagnostic Trouble Codes. Kenworth Service Manual . Display Diagnostic Codes. ... ECU Fault 629xx. ECU Fault 630xx. J1939 639xx. SA LEFT Wheel Speed Sensor 789xx. SA RIGHT Wheel Speed Sensor 790xx. DA LEFT Wheel Speed Sensor 791xx. DA RIGHT Wheel Speed Sensor 792xx. AA LEFT Wheel Speed Sensor 793xx. …

Contamination of the DEF can be a possible cause for this fault code Id be leaning towards the doser valve is the main issue. Now that its not working your nox level …This document will guide the user through determining the cause of fault code 3363-16 (FC1713) on vehicles equipped with SCR. BEFORE replacing any components, verify the DEF tank coolant lines are properly routed and the Diesel Exhaust Fluid Tank Heater Valve (DEFTHV) is facing the proper direction2015 Kenworth C500, 2016 Kenworth C500, 2017 Kenworth C500, 2018 Kenworth C500, ... Fix-as-fail: additional troubleshooting steps via supportlink for repeat scr fault codes on mx-13 epa 2013 engines. Vehicles covered in this TSB: 2013 Paccar Mx-13, 2014 Paccar Mx-13, 2015 Paccar Mx-13, 2016 Paccar Mx-13. 14 2015 Paccar Mx-13 …In today’s fast-paced digital world, having a reliable landline connection is crucial for both personal and business communication. When it comes to landline services, BT (British Telecom) is one of the leading providers in the United Kingd...replacing an scr, which turns out to be quite common on these medium duty trucks. something about them idling alot and how theyre manufactured, just doesnt w...SPN 1569 FMI 31 - SCR Tamperproof Warning & Protection System Inducement Severe. Fault Overview. Fault sets when any aftertreatment sensor or actuator is Open, disconnected, or bad DEF quality is detected for at least one hour. After one hour (level 2) engine will be de-rated by 25%. After 4 hours (level 3 and 4) engine will be de-rated by 40% ...Nov 3, 2022 · 10. Kenworth SCR Blues – Page 1 | TruckingTruth Forum. Kenworth SCR Blues – Page 1 | TruckingTruth Forum … start the engine, lo and behold there is an SCR system fault message. … get a re-power, limp to another close by shop (Kenworth), get “fixed”, … First, a little background.

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This diagnostic is typically Selective Catalyst Reduction (SCR) Outlet NOx Sensor – Drift Low. Table 1. SPN 3226/FMI 20 Description SCR Inlet NOx Sensor – Drift Low Monitored Parameter Engine Out NOx Typical Enabling Conditions The following must be true for greater than 30s: fuel mass is 0,Kenworth offers additional troubleshooting steps via SupportLink for fault codes P3818, P3830, P3997, P3928 and, P3914 for all PACCAR MX-13 EPA 2013 Engines. The procedures below should ONLY be followed for repeat SCR fault codes. Two emissions technologies will be available, Selective Catalytic Reduction (SCR) and in-cylinder, Exhaust Gas Recirculation (EGR). PACCAR has carefully evaluated each technology and concluded that SCR will provide the most fuel efficient and cost-effective solution to 2010 regulations. The SCR system operatesDIAGNOSING SELECTIVE CATALYST REDUCTION (SCR) EFFICIENCY FAULTS MODEL E90 (335d) E70 (X5 xDrive35d) SITUATION The Service Engine Soon light is on. The mileage countdown warning to a no start condition is displayed in the Control Display for incorrect exhaust fluid added. One or more of the following fault codes are stored in the DDE: M57Y:Thanks Received: 14 (10 Posts) Posts: 66 Threads: 13. Joined: Dec 2012. 1 01-29-2013, 03:57 AM. fault code on cummins 2010 ISX2 " SCR/DEF. ". insite had 3 faults, 2 of them were the voltage for HTR1, HTR2 for regen. the third fault was" RELAY POWER OUT OF RANGE " for the first 2. I checked all relays and fuses :OK.SCR system altered or fault detected Model Kenworth T680. Kenworth T680 Year 2016. Driver stopped driving. Thats - Answered by a verified TechnicianWhen it comes to heavy-duty trucks, Kenworth has established itself as a leader in the industry. With a reputation for durability, reliability, and excellent performance, Kenworth trucks are a popular choice among trucking professionals.The dreaded fault code that causes the 5 MPH derate! This fault is related to the “SCR Inducement” which is what regulates your truck to this derate. Cummins Fault Code – 3712 or SPN 5246 FMI 0. Notification – Red Stop Engine Light On. Information – Aftertreatment SCR Operator Inducement – Data Valid But Above Normal Operating Range ... Fault Code 5655: SCR System Test Failing NOx Sensors on Low Hour Aftertreatment Systems: F a u lt C o d e 5 6 5 5 : S C R S yst e m Te st F a ilin g N O x S e n so r s o n L o w H o u r A f t e r t r e a t m e n t S yst e m s Warranty Statement Contents: Product Affected L9 CM2450 L126B Issue Summary Symptom: The SCR System test fails the NOx sensor …the replacement SCR to use for the repair. DO NOT refer to the TSB130099 list of SCR replacements. This TRP takes precedence for the life of the field action. If the SCR catalyst has the dimples shown in the TSB, the SCR DOES NOT need to be replaced. File for only the appropriate Admin Time (00-90x) and Campaign Check (17-902). 2.There are over 150 possible fault codes that could apply to this article. To check your codes ... ŁCummins ISX SCR wiring - Engine Harness ŁCummins ISX SCR wiring - DEF Harness ŁCummins ISX SCR wiring - Aftertreatment Harness ŁCummins ISX SCR - Connector Composites WARRANTY INFORMATION Warranty Claim Coding: Step Description SRT … ….

Fault Code: 3712 PID: P105 SPN: 5246 FMI: 0 LAMP: Red SRT: Aftertreatment SCR Operator Inducement - Data Valid But Above Normal Operational Range - Most Severe Level. Critical SCR related fault codes have been active for an extended period of time and require immediate attention. Immediate engine power derate.Repetitive SCR Efficiency Codes Procedure Release Date 12/20/2016 Introduction Fix-as-Fail Only Peterbilt offers additional troubleshooting steps via SupportLink for fault codes P3818, P3830, P3997, P3928, P3914 for all PACCAR MX-13 EPA 2013 Engines. The procedures below should ONLY be followed for repeat SCR fault codes.Critical SCR related fault codes have been active and require immediate attention. Possible reduced engine performance.This fault code is for information only, make sure that the critical SCR tampering related fault codes that are presently active in the ECM are addressed as quickly as possible. Fault Code: 4151 PID(P): SPN: 5742 FMI: 9/9RE: Insite Help exhaust (SCR/DEF) service required. This is shop talk by cummins: This fault detects a mechanical malfunction of the DEF dosing valve, or a pin-to-pin short in the DEF dosing valve circuit. Reference the appropriate OEM wiring diagram when troubleshooting circuits that utilize wiring supplied by the OEM.This document will guide the user through determining the cause of fault code 3363-16 (FC1713) on vehicles equipped with SCR. BEFORE replacing any components, verify the DEF tank coolant lines are properly routed and the Diesel Exhaust Fluid Tank Heater Valve (DEFTHV) is facing the proper direction according to the procedure below.Right Front Lamp(s) Fault 2370xx. Left Rear Lamp(s) Fault 2372xx Right Rear Lamp(s) Fault 2374xx. Marker Lamp(s) Fault 2378xx. Clearance Lamp(s) Fault 2382xx Primary Fog Lamps Fault 2388xx. Secondary Fog Lamps Fault 2390xx. Left Trailer Lamp(s) Fault 2396xx. Right Trailer Lamp(s) Fault 2398xx Current Sensor Fault 2579xx. Main Light Switch Fault ...the replacement SCR to use for the repair. DO NOT refer to the TSB130099 list of SCR replacements. This TRP takes precedence for the life of the field action. If the SCR catalyst has the dimples shown in the TSB, the SCR DOES NOT need to be replaced. File for only the appropriate Admin Time (00-90x) and Campaign Check (17-902). 2. Scr fault kenworth, Diagnostic Fault Codes For Cummins Engines Applies to Engine Models QSB T2, QSC T2, QSL T2, QSM11, QSX15, QSK19, QSK23, QST30, QSK45/60/78 Note: These fault codes are current at date of publication. Always refer …, I have a 2017 kenworth t680 cummins isx and the scr system fault code came on my dash, I replaced the outlet nox sensor just now and did a force regen and the service and check engine is still om On* … read more, The dreaded fault code that causes the 5 MPH derate! This fault is related to the “SCR Inducement” which is what regulates your truck to this derate. Cummins Fault Code – 3712 or SPN 5246 FMI 0. Notification – Red Stop Engine Light On. Information – Aftertreatment SCR Operator Inducement – Data Valid But Above Normal Operating Range ... , 10. Kenworth SCR Blues – Page 1 | TruckingTruth Forum. Kenworth SCR Blues – Page 1 | TruckingTruth Forum … start the engine, lo and behold there is an SCR system fault message. … get a re-power, limp to another close by shop (Kenworth), get “fixed”, … First, a little background., I have a scr fault code on a 2016 Kenworth with a paccar i have a scr fault code on a 2016 Kenworth with a paccar MX13. the code from davies is a 1514 and says doser issue. I also have the red light on the gauge for the def. , SCR memory reset after replacing DEF pump., • Aftertreatment SCR temperature sensor module ... If no voltage issue found or if fault code(s) remains active after voltage is verified correct, proceed to step 2. Step 2 Refer to Cummins Procedure 019-417 (available on Cummins QuickServe®) Follow the resistance and short circuit checks to verify the proprietary data link circuits, and or the components …, Then connect your cathode side onto your negative lead. Follow the designated resistance value presented in your ohmmeter. When there is a high resistance value, this means that your SCR system is working just right. On the other hand, a low resistance value presents a fault to the system. Hence, you will need to replace or repair …, Mar 16, 2021 · Scr system altered or fault detected. 2015 t680. Kenworth..2015 t680. Cummings engine. Light just came on. Trying to see - Answered by a verified Technician , Thanks Received: 14 (10 Posts) Posts: 66 Threads: 13. Joined: Dec 2012. 1 01-29-2013, 03:57 AM. fault code on cummins 2010 ISX2 " SCR/DEF. ". insite had 3 faults, 2 of them were the voltage for HTR1, HTR2 for regen. the third fault was" RELAY POWER OUT OF RANGE " for the first 2. I checked all relays and fuses :OK., Thanks Received: 14 (10 Posts) Posts: 66 Threads: 13. Joined: Dec 2012. 1 01-29-2013, 03:57 AM. fault code on cummins 2010 ISX2 " SCR/DEF. ". insite had 3 faults, 2 of them were the voltage for HTR1, HTR2 for regen. the third fault was" RELAY POWER OUT OF RANGE " for the first 2. I checked all relays and fuses :OK., Kenworth Codes; Trouble Code Fault Location; P1000 – P1099 (Fuel and air metering and auxiliary emission control) P101C: BPV position fault while engine is in SCR heating …, faults for these sensors and ultimately puts the system into SCR Inducement. The root cause is often related to loss of power or battery voltage and/or grounding issues. The instruction below describes the most likely causes and provides steps for troubleshooting. S y m p t o m s • Presence of P21CA along with other ACM power and communication, Apr 15, 2020 · Fault: P3805. ECM: Diagnostic condition: 1) This diagnostic runs continuously when the engine runs. 2) No active DPF regeneration is occurring. Set condition of fault code: The EAS-3 ECU (D374) detects that the temperature before DPF is greater than 690°C [1112°F] for 60 seconds. Reset condition of fault code: , This video is about How I fixed my SCR Low Performance problem, How To Fix Scr System Fault Kenworth Written By Reasoner Antiver Wednesday, 13 July 2022 Add Comment Edit. Selective Catalytic Reduction (SCR) is an advanced active emissions command applied science organisation that reduces tailpipe emissions of nitrogen oxides (NOx) down to well-nigh-zero levels in newer generation …, 1.68K subscribers. 24K views 1 year ago. I am back on the road everyone after a bit of time in the shop. The issue was a SCR Code fault caused by issues with the fuse box. Spent the …, This video is to help you understand what happens when the truck needs regen or you start to run out of DEF. If you have any questions please email or call....., troubleshooting procedure in the engine’s fault code troubleshooting manual. − If the test DOES NOT COMPLETE, then see the “Aftertreatment SCR System Test Will Not Complete” troubleshooting procedure in the engine’s fault code troubleshooting manual. − If the test reports "Deposit Burn Failed", then the test should continue to run., How to Fix SCR system fault Kenworth? – Instructions and Videos Written by Robert Aksamit in Automotive, How to Fix When we talk about diesel fuel, one of the most common unknown words is SCR. What does SCR mean on a Kenworth? How to Fix SCR system fault Kenworth? What exactly does SCR delete mean? Conclusion Related posts: , Fault Code 5655 Aftertreatment 1 SCR Conversion Efficiency - Condition Exists CODES REASON EFFECT Fault Code: 5655 PID(P), SID(S): SPN: 4364 FMI: 11/31 Lamp: Amber SRT: NOx conversion across the SCR catalyst is too low. Possible reduced engine performance. ... The SCR catalyst is located in the vehicle's exhaust system, after the …, DEF – SCR Training Module Welcome to the Cummins Filtration DEF – SCR training module. DEF & SCR systems are key to Cummins meeting the 2010 On-Highway emissions requirements. Many other engine manufacturers have selected SCR as their 2010 emission strategy. Consequently, DEF will be an integral part of their solution as well., Truck has a scr fault code on it and for derate and it will not Regen it is a 2016 Kenworth with a Cummins in it. Mechanic's Assistant: Sometimes things that you think will be really complicated end up being easy to fix. The Heavy Truck Mechanic I'm going to connect you with knows all the tricks and shortcuts., Thanks Received: 14 (10 Posts) Posts: 66 Threads: 13. Joined: Dec 2012. 1 01-29-2013, 03:57 AM. fault code on cummins 2010 ISX2 " SCR/DEF. ". insite had 3 faults, 2 of them were the voltage for HTR1, HTR2 for regen. the third fault was" RELAY POWER OUT OF RANGE " for the first 2. I checked all relays and fuses :OK., SPN 1569 FMI 31 - SCR Tamperproof Warning & Protection System Inducement Severe. Fault Overview. Fault sets when any aftertreatment sensor or actuator is Open, disconnected, or bad DEF quality is detected for at least one hour. After one hour (level 2) engine will be de-rated by 25%. After 4 hours (level 3 and 4) engine will be de-rated by 40% ..., 3712 - Aftertreatment SCR Operator Inducement- Data Valid but Above Normal Operational Range- Most Severe Level. Conditions for Clearing the Fault Code This fault code will go inactive once all other active fault codes have been addressed. Refer to the appropriate fault code troubleshooting tree. The ECM will turn off the red STOP ENGINE lamp …, Some examples of fault-block mountains include the Sierra Nevada and the Grand Tetons in the United States and the Harz Mountains in Germany., 3712 - Aftertreatment SCR Operator Inducement- Data Valid but Above Normal Operational Range- Most Severe Level. Conditions for Clearing the Fault Code This fault code will go inactive once all other active fault codes have been addressed. Refer to the appropriate fault code troubleshooting tree. The ECM will turn off the red STOP ENGINE lamp …, 1 SS 1033423 : J-1939 Fault Code Source Address (SA), Suspect Parameter Number (SPN), and Failure Mode Indicator (FMI) Descriptions J-1939 Fault Code Source Address (SA), Suspect Parameter, Hi there, I have a 2013 Cummins ISX KW T660 that's getting code SPN 3216 FMI 4, which is Aftertreatment 1 Intake NOx Voltage Below Normal, Or Shorted..., in the fault conditions and further diagnosis required or possible return visits in the future. The information below should be reviewed and the DEF Dosing Valve confirmed to be defective prior to replacement. Cause Codes related to SCR efficiency and the DEF dosing valve may lead to replacement of a dosing valve that is functioning properly., Follow the test procedure and your specs are also covered below. P3844. Code number. P3844. Fault code description. DEF dosing valve - Current too low or open circuit on ECU D374 pin A77 or pin A53. Fault code information. 1 trip MIL 3 drive cycle recovery Readiness group – None Freeze frame type – Comprehensive. Description of …, BTW, this is a 2012 kenworth t660. RomanSGI, Oct 29, 2017. RomanSGI, Oct 29, 2017 #1 + Quote Reply. Trucking Jobs in 30 seconds. ... Sounds like you need to remove, inspect and clean the SCR box, sounds like it may be cracked. This is what is putting you into the derate. Or, head over to Rawze.com, good place for everything ISX, …