Cummins fault code 1866

Aug 16, 2018 · Fault Codes CUMMINS ISB ISC ISL ISBe ISDe and QSB3.3 CM2150 (168) Fault Codes CUMMINS GTA38 K38 K50 QSK38 QSK50/60 CM850 (97) Fault Codes CUMMINS Signature ISX QSX15 CM570 (94) Diesel Engine Software (90) Caterpillar Electronic Technician (87) Fault Codes CUMMINS ISB ISBe QSB4.5 QSB5.9 QSB6.7 ISC QSC8.3 ISL ISLe QSL9 CM850 (CM2850) (52)

Check for primary fault codes. Solution: S00000154. Verification. Conditions. Turn keyswitch ON. Connect the recommended Cummins® electronic …If fault code 1922 is still active OR inactive with more than one counts in the last 25 operating hours, the DPF is fully clogged. Replace the DPF. Step 9: This step will only work if you use Cummins Insite (version 8.5.2 or later) or an equivalent diagnostic tool which supports the test described below.For example, the list of ISX fault codes without EGR prior to 2002 is a different list from the 2007 2010 ISX fault codes with DPF. For the former, the 111 fault code stands for Electronic Control Module. For the latter, 111 has a more specific error: ECM Critical Internal Failure. The ISX fault codes for the 2007 – 2010 engine are more ...Monday, July 02, 2018 Fault Codes CUMMINS GTA38 K38 K50 QSK38 QSK50/60 CM850. SPN166 FMI2 Cylinder Power Imbalance Between Cylinders - Data Erratic, Intermittent, or Incorrect. Engine Control Module (ECM) Fault Code: 951 PID(P), SID(S): P166 SPN: 166 FMI: 2/2 Lamp: None SRT: ... Conditions for Clearing the Fault Code: • To validate the …FAULT CODE 1922 - Aftertreatment Diesel Particulate Filter Differential Pressure - Data Valid But Above Normal Operating Range - Most Severe Level Associated Procedures

CUMMINS FAULT CODE: 3582 PID(P): SPN: 4364 FMI: 1/18 LAMP: AMBER AFTERTREATMENT SCR CATALYST CONVERSION EFFICIENCY – DATA VALID BUT ... EGR differential pressure 1866 Turbocharger 1894, 2636, 5177 Aftertreatment NOx 1885, 1887, 2771, 3228, 3232, 3545, 3583, 3649, 3681,Download and support for the digital fault code troubleshooting manual, includes fault codes, ... Cummins Emission Solutions Aftertreatment: FIS4960729.chm: HS CM2250 Power System: FIS4961207.chm: Hybrid PECM CM5190: FIS4961207.chm: INSITE Integrated Simulator - Single Module: FIS4961207.chm: ISB:FAULT CODE 1922 - Aftertreatment Diesel Particulate Filter Differential Pressure - Data Valid But Above Normal Operating Range - Most Severe Level Associated ProceduresCheck for primary fault codes. Solution: S00000154. Verification. Conditions. Turn keyswitch ON. Connect the recommended Cummins® electronic …Fault Code 1921 Aftertreatment 1 Diesel Particulate Filter Differential Pressure - Data Valid But Above Normal Operating Range - Moderately Severe Level CODES REASON EFFECT Fault Code: 1921 PID(P), SID(S): S324 SPN: 3251 FMI: 0/16 Lamp: Amber SRT: The soot load of the aftertreatment diesel particulate filter has exceeded the recommended limits.manifold air temperature. Go to 2A. Step 2A) Connect all the components and turn key switch ON. Disable the fault code. Start the engine, and. let idle for 1 minute. Load and operate engine to typical operating temperature (180F coolant). Verify Fault. Code 155 is inactive and did not reoccur.

1/28/2020 Incorrect Pressure/Temperature Sensor: Fault Code 125, 222, 2191, 2973, 1664 https://quickserve.cummins.com/qs3/pubsys2/xml/en/tsb/2019/tsb190091.html 3/ 4Cummins ISC 8.3 Fault Codes. Fault Code 111. Electronic Control Module Critical Internal Failure. Bad Intelligent Device or Component. Fault Code 115. Engine Magnetic Speed/Position Lost Both of Two Signals – Data Erratic, Intermittent, or Incorrect. Fault Code 122.0°C [ 32°F ] either one or multiple fault codes may be present. Root cause of malfunction is not found during other steps of the trouble shooting tree. Fault Codes: 4729, 7233, 1866, 1228, 125, 153, 3361, 691, 742, 3542, 1896, 3382, 3389, 7232 Root Cause: Units that have been exposed to lower ambient air temperatures without a Cummins®CODE 1866, PID 4, FMI 2 SPN 411 CLEANED OUT DIFF PRESSURE PORTS, REPLACE DIFF Medium and Heavy Trucks Ask an Expert Car Questions Truck Repair This answer was rated: ★★★★★ 10 FREIGHTLINER M2 106 6.7 CUMMINS. CODE 1866, PID 4, FMI 2… , Mechanic cumminsdr, Mechanic 4,538 Satisfied Customers All types of Cummins applications cumminsdr is online nowJul 5, 2017 · Thanks Given: 2339. Thanks Received: 2400 (549 Posts) Posts: 757 Threads: 41. Joined: Jan 2012. 2 07-05-2017, 10:46 PM. (07-05-2017, 10:44 PM)TruckNet Wrote: Hello, I have a truck with CM2250 delete it but after some months is reporting a fault code: 1866 Exhaust Gas Recirculation Differential Pressure: Data erratic, Intermitent or Incorrect. Cummins ISB Engine Code EGR Valve. This EGR Valve fault code popped up and it caused a slight hesitation on acceleration which would make sense if the valve is open at the wrong time. The EGR funnels cooled exhaust coming from the EGR cooler into the intake system to cut down on emission levels. The code was 1896 EGR Valve Controller out of ...

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6.7 Liter Diesel Cummins Engine has Exhaust Gas Recirculation Codes Active. How to Diag to see if you have an issue with the turbo passing oil.#truckdriver #...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 to engine service manual for the latest information related to engine diagnostics and troubleshooting.Associate Degree. 6,648 satisfied customers. 2015 International 4300 Cummins/Allison is showing. 2015 International 4300 Cummins/Allison is showing electrical fault warning with a continual alarm sound. Then the ABS warning showed. … read more.Fault Code 1866. Exhaust Gas Recirculation Differential Pressure - Data Erratic, Intermittent, or Incorrect. EGR Differential Pressure Sensor Circuit. Circuit …Even when those active fault(s) are addressed before Fault Code 3714 or 6254 becomes active and are cleared, Fault Codes 3714 or 6255 and 3712 or 6254 will still become active due to a diagnostic notverifying that the fault codes are cleared. Fault Code 3714, 3712, 6255, and 6254 Active with No Other Active Fault Codes Page 1 of 2 https ...Cummins CM2250 Delete Fault code 1866. TruckNet Location Offline Junior Member Reputation: 505. Thanks Given: 254 Thanks Received: 786 (18 Posts) Posts: 90 Threads: 33 Joined: Nov 2016 1 07-05-2017, 10:44 PM . Hello, I have a truck with CM2250 delete it but after some months is reporting a fault code: 1866 Exhaust Gas Recirculation …

May 25, 2019 · Conditions for Clearing the Fault Code: • To validate the repair, it may be necessary to operate the vehicle on a chassis dynamometer or to drive the vehicle in order to get the engine load high enough for the diagnostic to run. Shop Talk: Troubleshoot any fault codes related to the intake manifold pressure/temperature, EGR differential pressure, Also confirm and complete any applicable Cummins campaigns or technical service bulletins, that address the active fault code(s). Note to access Blue Bird wiring schematics for your bus visit: https://vantage.blue-bird.com Note to access Cummins wiring schematics for your engine visit: https://quickserve.cummins.comSoftware downloads, licensing information, issues and solutions and access to technical support for users of INSITE Fault Viewer.Sep 1, 2021 · Fault Code 1921 Aftertreatment 1 Diesel Particulate Filter Differential Pressure - Data Valid But Above Normal Operating Range - Moderately Severe Level CODES REASON EFFECT Fault Code: 1921 PID(P), SID(S): S324 SPN: 3251 FMI: 0/16 Lamp: Amber SRT: The soot load of the aftertreatment diesel particulate filter has exceeded the recommended limits. If this value is outside of a specified range, Fault Code 1866 is set active. Possible causes of this fault code include: • A damaged EGR differential pressure sensor. • High resistance in the wiring harness on the signal or return wire. • Plugged or restricted EGR differential pressure sensor flow ports. Refer to Troubleshooting Fault ...SPN 411 - FMI 2 (Fault Code 1866) - Blog.Teknisi The engine fault codes are indicated by the “ENGINE MALFUNCTION” lamp that is located under the “COMPRESSOR MALFUNCTION” lamp. The engine fault codes are listed in Section 10 of this manual. ... Fault Codes CUMMINS ISB ISC ISL ISBe ISDe and QSB3.3 CM2150 (168) Fault …The only way to properly diagnosis the SPN fault codes is to match them with the pcodes. The way to match them 100% is to have the SPN number and the FMI number. For example, SPN 411 = P1495 / P1496. Most times there won’t be an issue with the EGR Delta Pressure sensor. This is just an indicator that you are in derate and your truck is not ...2020-6-1 Added fault codes, part numbers, and and IK1201362. 2021-7-1. Added Fault Codes 3382 and 1866 and IC Bus. Updated Chassis build date. Added IK0900141. Updated Resolution section. 2021-7-26: Added the B6.7 CM2450 B155B to Product Af fected. Corrected Chassis Build Date from 6 November 2020 to 11 July 2021.Jan 17, 2021 · • Technical Service Bulletin is available for the following fault codes: 1866, 3361, 3382, 3383, 3389, 4729, 7233 Refer to tsb190165 If this is a Navistar application, then proceed to the next action.

2012 peterbilt isx12 code 3714 derate code and 1866 EGR diff pressure erratic inter or incorrect. how do i diag either - Answered by a verified Technician ... This self test for this fault code happens when the key is turned off and while the ECM is powering down. If this fault is active the ECM has detected that the EGR differential pressure …

... code but it would not clear. So I searched Quickserve for the 1866 code and found that the conditions for clearing the fault code are #1, The engine coolant ...Title: 16-t05-1866.pdf Author: Welling Family Created Date: 1/23/2019 4:56:15 PMDiagnostic 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 to engine service manual for the latest information related to engine diagnostics and troubleshooting.Check for active fault codes. Fault Code 125 or 2973 active or inactive with more than one count logged in the last 25 engine Go to the appropriate troubleshooting tree and return to this step when the issue is corrected. Fault Code 125 or 2973 active or inactive with more than one count logged in the last 25 engine 1F 1F1/28/2020 Incorrect Pressure/Temperature Sensor: Fault Code 125, 222, 2191, 2973, 1664 https://quickserve.cummins.com/qs3/pubsys2/xml/en/tsb/2019/tsb190091.html 3/ 4Reduces occurrences of fault 1866 3. Enables fault code snapshot for all fault codes 4. Allows stationary regeneration to activate when a driveline retarder is trimmed on 5. ... followig fault codes..cummins px8..check engine light comes. I have a 2007 isc 285 & i have The followig fault codes pid 155 fm1 4. Its in a 2007 peterbilt 335 …Cummins L9 Engine and Engine Cooling Equipment Technical Service Bulletins TSB Number: TSB230166 NHTSA Number: ... This technical service bulletin describes the verification and resolution of issue of fault codes fc 3492, 319,and real time clock settings. TSB Number: PLANT COMM NHTSA Number: 10240448 TSB Date: ...Thanks Given: 2339. Thanks Received: 2400 (549 Posts) Posts: 757 Threads: 41. Joined: Jan 2012. 2 07-05-2017, 10:46 PM. (07-05-2017, 10:44 PM)TruckNet Wrote: Hello, I have a truck with CM2250 delete it but after some months is reporting a fault code: 1866 Exhaust Gas Recirculation Differential Pressure: Data erratic, Intermitent or Incorrect.

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SS 1033988, SPN 879 or 881 FMI 6 Fault Codes Applicable Vehicles All, 2015 to 2018, Freightliner M2 trucks. Symptoms SPN 879 or 881 FMI 6 Active Fault Codes. Issue SPN 879 FMI 6 Fault Code in Service Literature described as Front Left Turn Lamp - Current above expected value, and is associated with CHM C3-N pin. There is another pin, CHM …I went to a shop last week to look at this truck, two codes were in the PCM and would not clear. The shop diagnosed the truck with a bad particulate sensor. The sensor was replaced and the code did not come back. The 3712 and 3714 codes however would not clear, and the engine was in derate mode. Below you can see the conditions for clearing the code: …Cummins CM2250 Delete Fault code 1866. TruckNet Location Offline Junior Member Reputation: 505. Thanks Given: 254 Thanks Received: 786 (18 Posts) Posts: 90 Threads: 33 Joined: Nov 2016 1 07-05-2017, 10:44 PM . Hello, I have a truck with CM2250 delete it but after some months is reporting a fault code: 1866 Exhaust Gas Recirculation …If this value is outside of a specified range, Fault Code 1866 is set active. Possible causes: 1)A damaged EGR differential pressure sensor 2) ... Allison 1000 & 2000 Gen 4 Fault Codes: P1891 Engine Throttle Position Sensor Pulse Width Modulation (PWM) Signal Low Input 1000 & 2000 Gen 4 $ 50.00.• Technical Service Bulletin is available for the following fault codes: 1866, 3361, 3382, 3383, 3389, 4729, 7233 Refer to tsb190165 If this is a Navistar application, then proceed to the next action.1/28/2020 Incorrect Pressure/Temperature Sensor: Fault Code 125, 222, 2191, 2973, 1664 https://quickserve.cummins.com/qs3/pubsys2/xml/en/tsb/2019/tsb190091.html 2/ 4 Fault Code 1921 Aftertreatment 1 Diesel Particulate Filter Differential Pressure - Data Valid But Above Normal Operating Range - Moderately Severe Level CODES REASON EFFECT Fault Code: 1921 PID(P), SID(S): S324 SPN: 3251 FMI: 0/16 Lamp: Amber SRT: The soot load of the aftertreatment diesel particulate filter has exceeded the recommended limits.Fault Codes CUMMINS ISB ISC ISL ISBe ISDe and QSB3.3 CM2150 (168) Fault Codes CUMMINS GTA38 K38 K50 QSK38 QSK50/60 CM850 (97) Fault Codes CUMMINS Signature ISX QSX15 CM570 (94) Diesel Engine Software (90) Caterpillar Electronic Technician (87) Fault Codes CUMMINS ISB ISBe QSB4.5 QSB5.9 QSB6.7 … ….

Repair section. • Replace the aftertreatment outlet NOx sensor. Refer to Procedure 019-451. • Connect the recommended Cummins® electronic service tool or equivalent. • Disable the fault code. troubleshooting procedure. • Verify that the fault code is no longer active. number in the ECM.Code 1866 results Jump to Latest Follow 48453 Views 6 Replies 2 Participants Last post by TDIDog , Feb 4, 2015 T TDIDog Discussion starter · Jan 19, 2015 So our #3 bus was low on power and throwing this 1866 code. This means: Exhaust Gas Recirculation Valve Delta Pressure - Data Erratic, Intermittent, or Incorrect.• Use the recommended Cummins® electronic service tool or equivalent to read the fault codes. Specification Before troubleshooting this fault code, troubleshoot any fault code that is active or has more than one inactive count within the last 25 engine operating hours from the following list: • EGR differential pressure: 2273, 2274 Linked ...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 to engine service manual for the latest information related to engine diagnostics and troubleshooting. Summary: This Technical Service Bulletin describes the verification and resolution to fault codes: 146, 151, 1962, 2646, 2963; improper function of the coolant thermostat; excessive coolant temperature; and/or, engine unable to reach operating tempe. Communication Number: TSB180095-080620, Date: 2018-08-06.POSITIVE AIR SHUTOFF SYSTEMSPN 411 - FMI 2 (Fault Code 1866) - Blog.TeknisiCummins Engine Fault Codes list | Truckmanualshub.comCummins Fault Codes | TruckManuals.comCauses of Diesel Engine Overheating | Big Bear Engine CompanyYour Cummins has a 5 MPH DEF Derate (SPN 5246). What now ... Cummins …Follow the “Conditions For Clearing The Fault Code” section in corresponding fault code overview to validate the repair. Verify fault code is no longer active. If fault code is still active, reference the corresponding fault code troubleshooting tree. Document History L a s t M o d i f i e d : 0 9 - J u n - 2 0 2 0 Date DetailsInstallation: Fault Codes 3361, 3389, 3382 and 3383 E xh a u st G a s R e cir cu la t io n ( E G R ) S yst e m D iff e r e n t ia l P r e ssu r e S e n so r I n co r r e ct I n st a lla t io n :With these fault codes I recommend cleaning out your EGR system and intake as well as your differential pressure sensor circuit. ... 2016 International with Cummins ISB 6.7 engine: Codes 1866, 3382, 4616. Cleaned DPF filter, replaced …If this value is outside of a specified range, Fault Code 1866 is set active. Possible causes: 1)A damaged EGR differential pressure sensor 2)High resistance in the wiring harness on the signal or return wire ... Be the first to review "Cummins ISB6.7 CM2150 (2007-09) Fault Code: 1866 PID: 411 SPN: 411 FMI: 2 Exhaust Gas Recirculation Valve ... Cummins fault code 1866, ... 1866 Exhaust Gas Recirculation Valve Delta Pressure – Data Erratic, Intermittent, or Incorrect. 1876 Aftertreatment Exhaust Gas Temperature 3 Circuit ..., FAULT CODE 1922 - Aftertreatment Diesel Particulate Filter Differential Pressure - Data Valid But Above Normal Operating Range - Most Severe Level Associated Procedures, This is an explanation on what it takes to clear fault codes 3712 and 3714 on Cummins powertrains. Our technical support services have successfully helped ma..., 8 Feb 2023 ... You could check restricted air filter, inspect / clean EGR, clean out the EGR differential pressure ports / EGR valve, clean out DPF ..., 03-18-2019, (Subject: Check engine code 1866 ) Post: #1. vasyok8585 Established (1 Likes) Posts: 3 Joined: Mar 2019 : ... I need some help, I have some issues with cummins isx 15 CM2350, few months ago got check engine light, code 1866( differential pressure sensor),replaced egr differential pressure sensor, imap sensor, back pressure sensor ..., 03-18-2019, (Subject: Check engine code 1866 ) Post: #1. vasyok8585 Established (1 Likes) Posts: 3 Joined: Mar 2019 : Check engine code 1866 . Hi guys, I …, if you want to solve 0559 fault code in cummins engine then you need to check fuel line. 0559 means fuel line restriction or fuel internal leakage in fuel li..., Do you know the cummins fault code? RE: mid128 pid 411 fmi5 - JimT ... 1866 Exhaust Gas Recirculation Differential Pressure - Data Erratic ..., Solution: S00000154 Verification Conditions Turn keyswitch ON. Connect the recommended Cummins® electronic service tool or equivalent. Action Use the recommended Cummins® electronic service tool or equivalent to read the fault codes. Specification, CODE 1866, PID 4, FMI 2 SPN 411 CLEANED OUT DIFF PRESSURE PORTS, REPLACE DIFF Medium and Heavy Trucks Ask an Expert Car Questions Truck Repair This answer was rated: ★★★★★ 10 FREIGHTLINER M2 106 6.7 CUMMINS. CODE 1866, PID 4, FMI 2… , Mechanic cumminsdr, Mechanic 4,538 Satisfied Customers All types of Cummins applications cumminsdr is online now, Fault Codes CUMMINS ISB ISC ISL ISBe ISDe and QSB3.3 CM2150 (168) Fault Codes CUMMINS GTA38 K38 K50 QSK38 QSK50/60 CM850 (97) Fault Codes CUMMINS Signature ISX QSX15 CM570 (94) Diesel Engine Software (90) Caterpillar Electronic Technician (87) Fault Codes CUMMINS ISB ISBe QSB4.5 QSB5.9 QSB6.7 ISC QSC8.3 ISL ISLe QSL9 CM850 (CM2850) (52), Complete overview of the Cummins ISC 8.3L engine. Includes fault codes, diagnostic information, and more. Skip to content. About Us; Contact; Menu. About Us; Contact $ 0.00 0 Cart $ 0.00 0 Cart. ... Fault Code 1866 Exhaust Gas Recirculation Valve Delta Pressure – Data Erratic, Intermittent, or Incorrect., Issue. Symptom: Active or multiple inactive counts of Fault Codes: 1866, 3361, 3382, 3383, 3389, 7232, 7233 and/or 4729. Root Cause: Soot deposits in the intake air connection exhaust gas entrance ports are present and have affected EGR flow measurements. , I have a 2012 Freightliner M2 with Cummins engine ISB 6.7, the diagnosis code SPN 3251 After treatment 1 DPF ... I have this same fault code. 3375 pulled strait from ..., Jan 11, 2018 · 2010 Freightliner m2 106 6.7 cummins 1 Active code code 1921 sid 324, 0, 16, spn 3251 Had a egr valve issue replaced it with temp press next to it. Checked dpf ass load said full. doc face plugged and … read more , Cummins Fault Codes list for QSB, QSC, QSL9, QSM11, QSX15, QSK19, QSK23, QST30, QSK45, QSK60, QSK78 engines. To determine the malfunction, you just need to write out the fault code from the device in the cab and find the codes in the table by selecting your own engine type. High air temperature in inlet manifold (rear sensor, left …, This means: Exhaust Gas Recirculation Valve Delta Pressure - Data Erratic, Intermittent, or Incorrect. An error in the EGR delta pressure signal was detected at initial …, Possible causes of this fault code include: whatsapp +51955515985; [email protected]; 24/7 Customer Support, The sensor was replaced and the code did not come back. The 3712 and 3714 codes however would not clear, and the engine was in derate mode. Below you can see the conditions for clearing the code: 3712 - Aftertreatment SCR Operator Inducement- Data Valid but Above Normal Operational Range- Most Severe Level. , Fault Codes CUMMINS ISB ISC ISL ISBe ISDe and QSB3.3 CM2150 (168) Fault Codes CUMMINS GTA38 K38 K50 QSK38 QSK50/60 CM850 (97) Fault Codes CUMMINS Signature ISX QSX15 CM570 (94) Diesel Engine Software (90) Caterpillar Electronic Technician (87) Fault Codes CUMMINS ISB ISBe QSB4.5 QSB5.9 QSB6.7 …, Cummins Tier 4 Fault Codes. Fault Code: J1939 SPN: J1939 FMI: Lamp: J1939 SPN Description: ... 1866: 411: 2: Amber: Engine Exhaust Gas Recirculation 1 Differential ... , SPN: 1569 / FMI: 11/31. Cummins Fault codes 3712 and 3714. If these fault codes are active, this means the engine performance is already reduced (power derate) and possibly the vehicle speed is also limited. Both are information-only fault codes which appear when the ECM detects active critical fault codes related to engine operation., SA 0 SAE Diagnostic Trouble Codes and Cummins Fault Codes. SAE. J1939. SPN. SAE. J1939. FMI ... 1866. Exhaust Gas Recirculation Differential. Pressure - Data ..., setup a cummins quickserve online account for free and filter all information to be relevant to your engine., • Use the recommended Cummins® electronic service tool or equivalent to read the fault codes. Specification Before troubleshooting this fault code, troubleshoot any fault code that is active or has more than one inactive count within the last 25 engine operating hours from the following list: • EGR: 1228, 1896, 2272, 2349, 2351, 2352, 2353, Fault Code 3382 Engine Exhaust Gas Recirculation (EGR) System - Data Valid But Below Normal Operating Range - Moderately Severe Level. ... ***** with ISB Cummins esn: 73892436 two active codes 1922 and 3342 with several inactive codes 1866, 3312, 4612, 3383, 2962, 3382 ... 2010 Freightliner m2 106 6.7 cummins 1 Active …, Easy approach to taking care of crankcase pressure fault codes 1942, 0555 and 0556 by replacing the crankcase pressure sensor and installing a maintenance fr..., Title: 16-t05-1866.pdf Author: Welling Family Created Date: 1/23/2019 4:56:15 PM , File: 189-t06-1866 Page 1 of 8 ISX15 CM2350 X101 Fault Code: 1866 | SPN: 411 | FMI: 2 Exhaust Gas Recirculation Differential Pressure - Data Erratic, Intermittent, or Incorrect 1 …, Check for primary fault codes. Plugged EGR differential pressure sensor supply ports. EGR differential pressure sensor is malfunctioning. Check for primary fault …, Action Taken When the Fault Code is Active: • The ECM illuminates the amber CHECK ENGINE lamp and/or malfunction indicator lamp (MIL) after the diagnostic fails on two consecutive trips. Conditions for Clearing the Fault Code: • To validate the repair using a Diagnostic Road Test, utilize a route that incorporates both stop and go city type, • Technical Service Bulletin is available for the following fault codes: 1866, 3361, 3382, 3383, 3389, 4729, 7233 Refer to tsb190165 If the engine was operating in cold weather, then proceed to the next action., Use the recommended Cummins® electronic service tool or equivalent to read the fault codes. Specification. Before troubleshooting this fault code, troubleshoot any fault code that is active or has more than one inactive count within the last 25 engine operating hours from the following list: Intake manifold: 124