Cummins spn 157 fmi 7. Low fuel pressure faults can cause power derates .

Cummins spn 157 fmi 7. You can see that by looking over the tables below. I have replaced the fuel filter 2x in the last I have a 2014 389P with a Cummins ISX 15 engine, and it's throwing a fuel rail pressure code: SPN 157, FMI 18. 3 CM2150 » SPN 157 - FMI 16 (Fault Code 553) Diagnostic Fault Codes For Cummins Engines Applies to Engine Models QSB T2, QSC T2, QSL T2, QSM11, QSX15, QSK19, QSK23, QST30, QSK45/60/78 Customer: I have a fault code SPN 157 FMI 18 SA 0. - Thank you again. Low fuel pressure faults can cause power derates Oct 27, 2025 · I want to personally thank everyone who has donated to the forum recently. EFFECT: None or possible engine noise associated with higher injection pressures (especially at idle or light DD13 DD15 DD16 engines low fuel pressure diagnostic repair spn 157 fmi 10 fmi 16 spn 164 fmi15 Ukraine Waited for Russian Troops to Cross the River – Then BLEW the Bridge Apart Customer: 2016 FD266588, Cummins ISX15 fault SPN-157 Engine fuel 1 injector Metering Rail 1 pressure. May 20, 2022 · Not every authorized Cummins repair shop close to you has this special equipment or the special tools to fix the problem. 7 CM2150 (2007-09) Fault Code: 559 (ISB/QSB3. 7 engine series built on the proven reliability of earlier models, adding smarter diagnostics, enhanced emissions systems, and improved fuel economy. I took time and looked the code up Aug 16, 2018 · CODES: Fault Code: 1911 PID (P), SID (S): P157 SPN: 157 FMI: 0 Lamp: Amber REASON: Injector Metering Rail Number 1 Pressure - Data Valid but Above Normal Operating Range - Most Severe Level. This spn fmi codes help explain the underlying meaning of the numerical components which build an engine fault code. Check the sensor wiring harness for damage or loose connections. 7 CM2150 (2007-09) Fault Code: 451 PID: 157 SPN: 157 FMI: 3 Injector Metering Rail Number 1 Pressure Sensor Circuit – Voltage Above Normal or Shorted to High Source. 3) PID: 157 SPN: 157 FMI: 0 Injector Metering Rail Number 1 Pressure – Data Valid but Above Normal Operating Range – Most Severe Level. No cable box or long-term contract required. The engine control module (ECM) provides a 5 volt supply to the fuel rail pressure sensor using a dedicated sensor supply circuit. - This is not a comprehensive list, or an alternative to the standard fault diagnostic process and only serves as a supplemental reference. Check the injector metering rail pressure sensor and wiring harness for damage or corrosion. Spn 157 Fmi 16 problem code is about Fuel Rail Pressure Too Low: Engine Injector Metering Rail 1 Pressure Data Valid But Above Normal Operating Range - Moderately Severe Level; Pressure Deviation Too High. 9 CM2250 (2010-12) Fault Code: 1911 (CLX) PID: 157 SPN: 157 FMI: 0 Injector Metering Rail 1 Pressure Circuit- Data Valid But Above Normal Operating Range- Most Severe Level Circuit Description Between Memphis and North Little rRock my engine light cane in, on the dash. It can affect the engine’s fuel pump and injectors. 3) PID: 157 SPN: 157 FMI: 18 Injector Metering Rail 1 Pressure – Data Valid but Below Normal Operational Range – Moderately Severe Level. Recently we began having some CEL come ona lot. Cancel anytime. Jul 2, 2018 · • To validate the repair, perform a key cycle, start the engine and let it idle for 1 minute. Inspect the fuel pump for wear and test fuel pressure under load. The check engine light quickly turned off 1 day ago · I want to personally thank everyone who has donated to the forum recently. Did SPN 157/FMI 16 or SPN 520268/FMI 18 appear after the fuel system was repaired or fuel filter maintenance was performed? a. 5 CM2150 Fault Code: 559 PID: 157 SPN: 157 FMI: 18 Injector Metering Rail 1 Pressure – Data Valid but Below Normal Operating Range – Moderately Severe Level. 7 CM2150 (2007-09) Fault Code: 554 PID: 157 SPN: 157 FMI: 2 Injector Metering Rail 1 Pressure – Data Erratic, Intermittent, or Incorrect. Created by InShot:https://inshotapp. Possibly hard to start, low power, or engine smoke. The freeze frame data for both codes shows a desired rail pressure of 32k psi, while the actual pressure is only 5k. Proper testing with DiagnosticLInk will help pinpoint if it is a faulty fuel rail pressure sensor, faulty quantity Nov 23, 2015 · Home » Fault Codes CUMMINS ISB ISC ISL ISBe ISDe and QSB3. A self pumping condition has been detected in the fuel system. SPN#157, FMI#18 ― Fuel Pressure Lower Than Commanded Pressure. What does the code mean? Cummins ISB6. Mar 29, 2023 · 6. I've replaced the six injectors, the entire high-pressure fuel pump, and changed filters multiple times, but the issue persists. If you don't take the time to look into Spn 157 Fmi 3 engine problem when it arises, it can add up quickly. Last week I was headed west, stopped for diesel (at a TA location), Cummins spn/fmi code list from 1 to 9999999 and fault code list from 111 to 9999. 7 CM2150 (2007-09) Fault Code: 1911 (ISC/ISL) PID: 157 SPN: 157 FMI: 0 Injector Metering Rail Number 1 Pressure – Data Valid but Above Normal Operating Range – Most Severe Level. Did SPN 157/FMI 16 appear after the fuel system was repaired or fuel filter maintenance was performed? Yes; the code may be set due to air in the fuel system. Check the high-pressure fuel pump, fuel rail pressure sensor, and injector control valves for faults or leaks. It has appeared three times. The first time, I visited a repair facility where they connected to the insite program and found low fuel pressure. 3 CM2150 » SPN 157 - FMI 3 (Fault Code 451) Jan 30, 2016 · Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts. Dec 18, 2020 · I currently own a 2012 Volvo Vnl with a Cummins isx, a little over a month ago a code popped up (spn 157 fmi 18). SPN 5571 FMI 7 -Pressure limiting valve, Failed to close, SPN 157 FMI 18 -Fuel Rail Pressure too High, and SPN 520268 FMI 18 -Fuel Rail Pressure too High, Similar Condition. Did SPN 157/FMI 17 set after the fuel system was repaired, fuel filter maintenance was performed or the vehicle was drained of fuel? Yes; the code may have set due to air in the fuel system. I'm considering the possibility of a faulty sensor. SPN#157, FMI#16 ― Fuel Pressure Higher Than Commanded Pressure -- Continued. Apr 20, 2021 · Just thought I'd post some info about my experience encountering fuel starvation problems and getting the SPN 157 code on my dash. One small issue like Spn 157 Fmi 18 can cause a larger component to Apr 24, 2025 · Code 559 on a Cummins SPN 157 refers to a fault in the fuel rail pressure sensor or the fuel pressure relief valve. This number identif es the item for which diagnostics are being reported. Yes; the code may be set due to air in the fuel system. Jun 3, 2025 · Access Cummins B6. This may lead to difficulty starting or low power, and the engine might not start at all. Can you describe the symptoms your engine is experiencing? Customer: I'm experiencing a loss of power. One small issue like 157 can cause a larger component to become damaged without taking the time to investigate. Went to the Spartan app and found it was a Cummins 4727 Jul 3, 2018 · • The fault code status displayed by the recommended Cummins® electronic service tool or equivalent will change to INACTIVE immediately after the diagnostic runs and passes. FMI” is the Failure Mode Indicator. 7 CM2350 (2013-17) Fault Code: 452 PID: 157 SPN: 157 FMI: 3 Injector Metering Rail 1 Pressure Sensor Circuit- Voltage Below Normal or Shorted to Cummins X12 CM2350 X119B (2018 & Newer) Fault Code: 755 PID: PID 157 SPN: 157 FMI: 7 Injector Metering Rail 1 Pressure- Mechanical System Not Responding or Out of Adjustment Jan 21, 2019 · I got a 2013 Peterbilt with a Cummins isx 15. We have a loss of power, stalling, and hard start situations. The ECM has detected that the fuel pressure is lower than the commanded pressure. Cummins X15 CM2450 X124B (2018 & Newer) Fault Code: 755 PID: PID 157 SPN: 157 FMI: 7 Injector Metering Rail 1 Pressure- Mechanical System Not Responding or Out of Adjustment Circuit Description The engine control module (ECM) provides a 5 volt supply to the fuel rail pressure sensor using a dedicated sensor supply circuit. SPN#157, FMI#3 ― High Signal Voltage at Rail Fuel Pressure Sensor Circuit -- Continued. Codes are becoming more "industry standard" in the numbering method, resulting in the original 3-4 digit Cummins codes having new SPN and FMI numbers attached. Start by inspecting the fuel filter and replacing it if dirty. 5 CM2150 Fault Code: 545 PID: SPN: 1188 FMI: 7 Turbocharger 1 Wastegate Control – Mechanical System Not Responding or Out of Adjustment. 2. 7L Cummins to COMPLETELY Lock Up? DD13 DD15 DD16 engines low fuel pressure diagnostic repair spn 157 fmi 10 fmi 16 spn 164 fmi15 DEFINITIONS “SPN” represents the Suspect Parameter Number. Clean all fittings before disassembly, and cap/plug all open fuel lines and ports to prevent contamination from entering fuel system. 1. Nov 27, 2024 · What does the SPN 157 code mean? The SPN 157 code refers to an issue with the Engine Injector Metering Rail #1 Pressure. Active” or “Previously Active” will be displayed to identify whether a fault is currently Nov 18, 2024 · Cummins ISB6. CUMMINS FAULT CODE 559 – Injector Metering Rail 1 Pressure – Data Valid But Below Normal Operating Range – M Seized ceramic plunger compared to how it should look normally. High signal voltage detected at rail fuel pressure sensor circuit. This number represents the type of failure detected. This diagnostic trouble code (DTC) is specific to diesel engines, particularly those equipped with advanced fuel injection systems. Jul 6, 2018 · • The fault code status displayed by the recommended Cummins® electronic service tool or equivalent will change to INACTIVE immediately after the diagnostic runs and passes. Additionally, there's another active but related fault, SPN 3482 FMI 7, concerning the after-treatment fuel enable actuator. Jan 21, 2019 · I got a 2013 Peterbilt with a Cummins isx 15. Nov 18, 2024 · Cummins ISB6. • The fault code status displayed by the recommended Cummins® electronic service tool or equivalent will change to INACTIVE immediately after the diagnostic runs and passes. Discover more answers I have a 2003 field sprayer with a 8. Cummins X15 CM2350 X116B Performance Series (2018 & Newer) Fault Code: 755 PID: PID 157 SPN: 157 FMI: 7 Injector Metering Rail 1 Pressure- Mechanical System Not Responding or Out of Adjustment Circuit Description The engine control module (ECM) provides a 5 volt supply to the fuel rail pressure sensor using a dedicated sensor supply circuit. 3 CM2150 » SPN 157 - FMI 0 (Fault Code 449) CL SPN 157 FMI 15 indicates low or erratic fuel injector metering rail pressure. Step 1: When your pump cranks , but will not start and throws this code "SPN: 157 Engine Injector Metering" Jan 9, 2022 · a95f9b19-fb42-4159-a08c-87e91534ac1c_189-t06-559_ (1) - Free download as PDF File (. 7 CM2350 (2013-17) Fault Code: 755 PID: 157 SPN: 157 FMI: 7 Injector Metering Rail 1 Pressure- Mechanical System not responding or out of adjustment Circuit Description The engine control module (ECM) provides a 5 volt supply to the fuel rail pressure sensor using a dedicated sensor supply circuit. The codes provide information about the system (such as Cummins SPN 157 FMI 18), the type of problem, and the components involved. It put out a fault engine code spn 190, FMI 2. Dec 22, 2015 · CODES: Fault Code: 559 PID (P), SID (S): P157 SPN: 157 FMI: 18 Lamp: AMBER SRT: REASON: Injector Metering Rail 1 Pressure - Data Valid but Below Normal Operational Range - Moderately Severe Level. Despite replacing fuel filters and the high-pressure pump, check the fuel pressure sensor and wiring harness for damage or poor connections. b. Cummins ISB4. It helps pay for the $790/month internet bill that the forum consumes. Cummins SPN 157 FMI 18 problem code is about Fuel Rail Pressure Too High: Engine Injector Metering Rail 1 Pressure Data Valid But Below Normal Operating Range - Moderately Severe Level; Pressure Deviation Too Low. The goal is to help you make a quick decision on what you need to do. 3 CM2150 » SPN 157 - FMI 2 (Fault Code 554). Designed to meet tougher environmental regulations while delivering performance for a wide range of medium-duty vehicles, this engine remains a fleet favorite. 7 CM2350 (2013-17) Fault Code: 451 PID: SPN: 157 FMI: 3 Injector Metering Rail 1 Pressure Sensor Circuit- Voltage Above Normal or Shorted to High Truckers quick tips allow you to search using SPN -FMI OR FAULT CODE NUMBERS. If code sets, Go to step 2. Spn 157 Fmi 3 problem code is about Sensor Voltage Above Upper Limit. With evolving aftertreatment systems and new fault logic Apr 2, 2025 · View the Cummins ISX15 (2010–2012) fault codes list to quickly diagnose and troubleshoot engine issues with ease. Cummins X15 CM2350 X116B Performance Series (2018 & Newer) Fault Code: 4727 PID: SPN: 157 FMI: 15 Injector Metering rail 1 Pressure- Data Valid But Above Normal Operating Range- Least Severe Level Circuit Description The engine control module (ECM) provides a 5 volt supply to the fuel rail pressure sensor using a dedicated sensor supply circuit. Failure to comply may cause damage to equipment. Aug 18, 2025 · Cummins X12 CM2350 X119B (2018 & Newer) Fault Code: 755 PID: PID 157 SPN: 157 FMI: 7 Injector Metering Rail 1 Pressure- Mechanical System Not Responding or Out of Adjustment Jun 19, 2017 · Home » Fault Codes CUMMINS ISB ISC ISL ISBe ISDe and QSB3. Sep 4, 2024 · SPN 157 indicates that the fuel rail pressure is lower than the commanded pressure. If you don't take the time to look into 157 spn fault when it arises, it can add up quickly. While it may cause hard starting, low power, or even prevent the engine from starting, in most cases you can continue driving cautiously to a repair shop. 157 spn fault code name is Engine Fuel 1 Injector Metering Rail 1 Pressure. Cummins Tier 4 Fault Codes. Aug 26, 2013 · I'm getting an intermittent 559 even at bobtail when I'm running it hard. Suspect parameter number for cummins trucks error code list. Customer: TxId: 0 SPN: 157 – Engine Fuel 1 Injector Metering Rail 1 Pressure FMI: 18 (Low—moderate severity) Count: 2 Fault Code Mechanic's Assistant: Thank you for sharing the fault code details. What caused this problem in this particular case was a drop in fuel pressure. They replaced the fuel filters, cleared the code, and I was on my way. EFFECT: Possibly hard to start, low power, or engine smoke. Clear codes and road test to verify complaint. Fault Code: 559 PID: P157 SPN: 157 FMI: 18 LAMP: Yellow SRT: Injector Metering Rail 1 Pressure - Data Valid but Below Normal Operational Range - Moderately Severe Level. You can use Diesel Repair to find information on these fault code both ways. The ECM has detected that fuel pressure in the rail fuel is higher than the commanded pressure. Mechanic's Assistant: Has there been any recent work done on the engine or any changes made Fault Codes list for Cummins QSB, QSC, QSL9, QSM11, QSX15, QSK19, QSK23, QST30, QSK45, QSK60, QSK78 Engine, fault codes PDF Cummins ISB CM850 (2003-06) Fault Code: 2249 PID: 157 SPN: 157 FMI: 1 Injector Metering Rail 1 Pressure – Data Valid but Below Normal Operational Range – Most Severe Level. Refer to Failure Mode Indicators (FMI) below for more information. What Caused This 6. The ECM has detected that the fuel pressure is lower than commanded pressure. SPN: 157 FMI: 18 Lamp: Amber SRT: Injector Metering Rail 1 Pressure - Data Valid but Below Normal Operational Range - Moderately Severe Level. 7 CM2350 (2013-17) Fault Code: 553 PID: 157 SPN: 157 FMI: 16 Injector Metering Rail 1 Pressure- Data Valid But Above Normal Operating Range- Moderately Severe Level Circuit DescriptionThe engine control module (ECM) monitors engine operating conditions, including the reading of fuel rail pressure, and chan Cummins ISB6. the ECM has detected that the fuel pressure signal is not changing. May 26, 2025 · 26 May, 2025 Cummins ISB6. For the last two weeks I've been getting a check engine light with code spn 157 FMI18 Fuel rail pressure, Cummins ISB6. I have installed new filters, new injectors, and a new regulator, yet this code won't clear even when the truck is not running. 7 CM2350 (2013-17) Fault Code: 755 PID: 157 SPN: 157 FMI: 7 Injector Metering Rail 1 Pressure- Mechanical System not responding or out of adjustment. Nov 23, 2015 · Home » Fault Codes CUMMINS ISB ISC ISL ISBe ISDe and QSB3. Table 1. Shortly after, the check engine light and Malfunction Indicator Lamp (MIL) came on. Cummins ISX15 CM2250 (2010-12) Fault Code: 559 (CL) PID: 157 SPN: 157 FMI: 18 Injector Metering Rail 1 Pressure- Data Valid But Below Normal Operating Range- Moderately Severe Level Circuit Description The pressure control loop relies on fuel pressure supplied to the high pressure pump by the fuel gear pump. SPN#157, FMI#0 ― Fuel Rail Pressure Higher Than Commanded Pressure -- Continued. After all that, Cummins only uses one code number which relates to the SPN and FMI portion of this code system. 3. 80-1235 - Allied Systems 80-1235 Cummins ISX11. May 23, 2025 · The 2021–2023 Cummins B6. 3 CM2150 » SPN 157 - FMI 0 (Fault Code 449) B Mar 8, 2025 · Cummins ISX15 CM2250 (2010-12) Fault Code: 559 (CL) PID: 157 SPN: 157 FMI: 18 Injector Metering Rail 1 Pressure- Data Valid But Below Normal Operating Range- Moderately Severe Level March 8, 2025 Cummins ISB6. Tabela detalhada de códigos de falha para motores Cummins, incluindo SPN, FMI, TEMSA DTC e descrições de falhas. 7 CM2350 (2013-17) Fault Code: 553 PID: 157 SPN: 157 FMI: 16 Injector Metering Rail 1 Pressure- Data Valid But Above Normal Operating Range- Moderately Severe Level Table 1. Jul 2, 2018 · • The fault code status displayed by the recommended Cummins® electronic service tool or equivalent will change to INACTIVE immediately after the diagnostic runs and passes. Engine could possibly not start. May 18, 2022 · On our coach we have a Cummins ISC8. SPN 157 FMI 18 indicates a fault in the turbocharger boost pressure sensor circuit. 5 CM2150 Fault Code: 553 PID: 157 SPN: 157 FMI: 16 Injector Metering Rail 1 Pressure – Data Valid But Above Normal Operating Range – Moderately Severe Level. Nov 30, 2024 · Cummins ISB6. page. Cummins SPN FMI Codes Most used engine in trucks is Cummins has more than 100 SPN/FMI codes list. SPN stands for Suspect Parameter Number and is a standardized numbering system used to identify generic Feb 1, 2023 · Cummins Fault Codes Explained Depending on which tool you use to retrieve fault codes from your Cummins engine, you may either see the generic SPN & FMI codes or the actual Cummins OEM fault code. 3 cummins. Cummins X15 CM2450 X124B (2018 & Newer) Fault Code: 4727 PID: SPN: 157 FMI: 15 Injector Metering rail 1 Pressure- Data Valid But Above Normal Operating Range- Least Severe Level Circuit Description The engine control module (ECM) provides a 5 volt supply to the fuel rail pressure sensor using a dedicated sensor supply circuit. One small issue like Spn 157 Fmi 3 can cause a larger component to become damaged without taking the time to investigate. If you suspect your truck is suffering from one of these issues, look into replacing those small Nov 30, 2024 · Cummins ISB6. The ECM has detected that fuel pressure is lower than commanded pressure. No; Go to step 2. Circuit Description: The ECM The SPN-157 fault indicates low or inconsistent fuel pressure at Injector Metering Rail 1, causing black smoke and power loss uphill. link/YTShare Table 1. Fast, accurate info to keep your fleet moving. Apr 4, 2025 · Explore the Cummins ISX15 (2013–2018) fault codes list to diagnose and fix engine issues quickly and efficiently. Nov 24, 2021 · You know already but for others reading this post in the future the fault description may be beneficial. pdf), Text File (. 7 CM2150 (2007-09) Fault Code: 1911 (ISB/QSB3. 2019 International A26, I have active fault codes SPN 157 FMI 18, indicating low injector rail pressure. Low injector metering rail pressure (SPN 157 FMI 18) often results from a failing high-pressure fuel pump, clogged fuel filters, or leaking injectors. It provides information about fault codes, procedure numbers to perform repairs, and step by step troubleshooting on the engine. Dec 22, 2015 · Home » Fault Codes CUMMINS ISB ISC ISL ISBe ISDe and QSB3. FIS is a downloadable version of the fault code troubleshooting manual. If code does not set, release the vehicle. SPN- suspect parameter number identifies the specific component or condition that is triggering the fault code. After stopping a rest area diagnostics said I had a SPN 157 FMI 15. It'll run good for a few miles with boost hitting 33psithen it'll flash a Dirt and debris can contaminate fuel system. If you don't take the time to look into Spn 157 Fmi 18 engine problem when it arises, it can add up quickly. Sep 23, 2022 · Cummins SPN 157 FMI 18 is a diagnostic trouble code that indicates an issue with the fuel pressure sensor circuit that causes engine issues. 7 (2024–2025) fault codes, repair data, and more inside Diesel Repair. If you don't take the time to look into Spn 157 Fmi 16 engine problem when it arises, it can add up quickly. Fault code 0559 FMI 18 indicates a fuel pressure or delivery fault under load. I'll try to get an updated article on this soon further explaining this change. LARGE Fuel Rail Pressure Sensor 2014 Entegra Aspire Cummins 450 SPN 157 FMI 18 Fault Code Issue Aspire models may experience intermittent power loss and persistent check engine lights related to engine sensor faults. MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION Table 1. SPN 157 indicates low or erratic pressure in injector metering rail 1, often due to a faulty pressure sensor, clogged fuel filter, or injector rail leaks. Live TV from 100+ channels. Ideal para diagnóstico e manutenção. Spn 157 Fmi 18 problem code is about Fuel Rail Pressure Too High: Engine Injector Metering Rail 1 Pressure Data Valid But Below Normal Operating Range - Moderately Severe Level; Pressure Deviation Too Low. For the last two weeks I've been getting a check engine light with code spn 157 FMI18 Fuel rail pressure, Sep 7, 2022 · Common Cummins SPN FMI Codes and What They Mean Cummins SPN and FMI codes are diagnostic fault codes that are used to help troubleshoot issues with engines. txt) or read online for free. Cummins ISB6. 7 CM2350 (2013-17) Fault Code: 4727 PID: SPN: 157 FMI: 15 Injector Metering Rail 1 Pressure – Data Valid But Above Normal Operating Range – Least Severe Level. This has also resulted in a major increase in the number of fault codes present in the Cummins ECM. kw3 y8laqk x9z mhgc dpi39a wgiqe lepm jzcj fpmm su1u