Spn 157 fmi 18 dd15.

Fuel Rail Pressure Signal Not Changing -- Continued. Table 1. SPN#94, FMI#2 ― Fuel Rail Pressure Signal Not Changing -- Continued. 4. Check active engine faults. 1. If fault codes SPN#157, FMI#3. SPN#157, FMI#4. troubleshooting as necessary.

Spn 157 fmi 18 dd15. Things To Know About Spn 157 fmi 18 dd15.

SPN#157, FMI#4. switch to OFF position (TM 5-3895-385-10), and perform. troubleshooting as necessary. 2. If fault codes SPN#157, FMI#3. and SPN#157, FMI#4 are not. displayed, proceed to next. malfunction. 2. Rail fuel pressure sensor fault. 1. Disconnect engine ECM wiring. harness connector W25 C6.SPN 5357. FMI 18. Fuel quantity low detected. if any other fault codes are active, ... We have a 2015 freightliner cascadia, dd15 engine, codes spn 5357 fmi 16, spn 102 fmi 18, the shop 50 miles down the road baked the dpf filters made it …Dirt and debris can contaminate fuel system. Clean all fittings before disassembly, and cap/plug. all open fuel lines and ports to prevent contamination from entering fuel system. Failure to comply. may cause damage to equipment. Table 1. SPN#157, FMI#18 ― Fuel Pressure Lower Than Commanded Pressure. MALFUNCTION. TEST OR INSPECTION.Did SPN 157/FMI 17 set after the fuel system was repaired, fuel filter maintenance was performed, or the vehicle was run out of fuel? Yes – The code may have set due to air in the fuel system. Clear the codes and road test the vehicle. If the code does not reset, release the vehicle to the customer. No – Go to Step 2 : Step 2)I got 2015 cascadia, giving code spn 91 fmi 8. I changed the…. Perform the following steps to troubleshoot low voltage. 1. Disconnect the Accelerator Pedal (AP). 2. Turn ON the ignition (key ON, engine OFF). 3. Measure the voltage between pins B and C of the AP harness connector.

SPN 3464/ FMI 16, 18 (MCM) (GHG14) January 2015 Additions, Revisions, or Updates Publication Number / Title Platform Section Title Change DDC-SVC-MAN-0084 DD Platform SPN 3464/ FMI 16, 18 - GHG14 This is an updated section with new diagnostics including turbocharger wastegate. 01 04-15 All information subject to change without notice. 3

SPN 157 FMI 18 Engine Fuel 1 Injector Metering Rail 1 Pressure Moderate SPN 2798 FMI 8 Engine Fuel 1 Injector Group 2 : Abnormal Frequency Or Pulse Width Or Period SPN 6653 FMI 18 Engine Fuel 1 Injector Metering Rail 1 Cold Start Pressure : Data Valid But Below SPN 132 FMI 21 Engine Intake Air Mass Flow Rate: Data Drifted Low. SPN 3251 FMI 15Mar 26, 2021 · Truck Repair. This answer was rated: ★★★★★. I have a 2020 Volvo with Code: SPN: 5018 FMI: 1. I need to…. Answered in 9 minutes by: Soot plugging the front face of the aftertreatment diesel oxidation catalyst. Engine oil or fuel contamination of the aftertreatment diesel oxidation catalyst. Cracked or contaminated aftertreatment ...

Is the EST DTC list free of SPN 157 FMI 3, 4, 20, and 21, and SPN 633 FMI 3, 4, and 5? No. Repair other fault codes, first. See health report for link to diagnostics. If the code is still present, go to Step 3. StepAction Decision 3 Check that the engine cranks at a minimum of 130 RPM. Does the engine crank at a minimum of 130 RPM? Yes. Go to ...Engine Idle (One Minute) The Motor Control Module (MCM) monitors the rail pressure and when rail pressure deviation is greater than 200 bar for eight seconds, the MCM sets the …Hope this is helpful,,I know I've been down the wrong hole from time to time.Oct 23, 2020 · Truck Diagnostic Technician. Vocational, Technical or Tra... 3,031 satisfied customers. I have a freightliner Columbia and I'm getting this codes. hi I have a freightliner Columbia and I'm getting this codes low 128 157 01 sht lo 128 164 04 SAM SA33 spn520909 CHASS SA71 SPN520604 … read more. The ECM has detected that the fuel pressure is lower than commanded pressure. EFFECT: Possibly hard to start, low power, or engine smoke. Engine could possibly not start. Circuit Description: The ECM …

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b. If only SPN 609/FMI 13 fault is present, reprogram CPC with the proper configuration for the vehicle. Table 2. Note: The tables below shows a set of commonly miss configured source inputs that will set the code. Parameter Name Cascadia Chassis Parameter Value M2 Chassis Parameter Value CM1 DPF Source Addr SAE J1939 49 33

If fault code SPN#157, FMI#3 is. screen for fault code SPN#157, displayed, turn keyless engine. FMI#3. switch to the OFF position (TM. 5-3895-385-10), and proceed to ... Truckers Quick Tip Fault Code 559 SPN 157 FMI 18. Low Fuel Pressure in the common rail. Engine Shop Joe 2.42K subscribers Subscribe 24K views 2 years ago Truckers quick tips allow you to...Truck Diagnostic Technician. Vocational, Technical or Tra... 3,031 satisfied customers. I have a freightliner Columbia and I'm getting this codes. hi I have a freightliner Columbia and I'm getting this codes low 128 157 01 sht lo 128 164 04 SAM SA33 spn520909 CHASS SA71 SPN520604 … read more.This spn fmi codes help explain the underlying meaning of the numerical components which build an engine fault code. ... SPN-157-FMI-18; SPN-157-FMI-2; SPN-157-FMI-3 ...This information applies to all EPA10/GHG14/GHG17 DD13, DD15 and DD16 On-Highway engines. ... SPN FMI Description 3246* 0 Diesel Particulate Filter Outlet Temperature - Very High ... 102 18 Intake Manifold Pressure Too LowJoin Date: Jan 2011. Posts: 802. SPN 157 FMI 18 Fault Code. "This is the toughest code to find and fix" was the quote from the mechanic after he hooked up his computer. Not what we wanted to hear. This was on the 13th of DEC, day 3 of our first trip in our 3 day old coach. Approaching the end of a very long travel day, the following …Detroit DD13 GHG14 (2014-16) Fault Code: SPN 5018 FMI 18 (ACM) Diesel Oxidation Catalyst Efficiency Fault. DESCRIPTION: Diesel Oxidation Catalyst (DOC) efficiency fault. MONITORED PARAMETER: Exhaust temperature. ... SERVICE MANUAL DETROIT DD15 GHG 17 DETROIT $ 42.00. Rated 0 out of 5. SERVICE MANUAL HINO FD.FE.FF.SG …

2019 International A26, active fault codes SPN 157 FMI 18, On your question if the rail pressure was that low on the snap shot you either have a high pressure leak, pump issue, biased rail pressure sensor or an issue with the relief valve. I would deplete the pressure in the system and make sure the sensor reads a good zero.• SPN 94/FMI 16 Fuel Filter Plugged • SPN 97/FMI 15 Water in the Fuel • SPN 157/FMI 1 Rail Pressure too High • SPN 164/FMI (All) Rail Pressure Sensor Faults • SPN 174/FMI 0 Fuel Temperature too High • SPN 723/FMI (all) Cam Sensor Codes • SPN 636/FMI (all) Crank Sensor Codes • SPN 1077/FMI 5, 6 or 14 • SPN 5571/FMI any PCV ...SPN#157, FMI#4. switch to OFF position (TM 5-3895-385-10), and perform. troubleshooting as necessary. 2. If fault codes SPN#157, FMI#3. and SPN#157, FMI#4 are not. displayed, proceed to next. malfunction. 2. Rail fuel pressure sensor fault. 1. Disconnect engine ECM wiring. harness connector W25 C6.It’s showing this code spn 520268 fmi 16. Dd 15 Freightliner. Nothing yet. Is that a big problem or minior - Answered by a verified Techniciana. If any of the additional fault codes are active, perform the associated diagnostics first:• SPN 94 / FMI 15 Fuel Filter Plugged• SPN 94 / FMI 16 Fuel Filter Plugged• SPN 97 / FMI 15 Water in the Fuel• SPN 157 / FMI 1 Rail Pressure Too High• SPN 164 / FMI (All) Rail pressure Sensor Faults• SPN 174 / FMI 0 Fuel Temperature Too High• SPN …Jan 30, 2016 · Join Date: Jan 2011. Posts: 805. SPN 157 FMI 18 Fault Code. "This is the toughest code to find and fix" was the quote from the mechanic after he hooked up his computer. Not what we wanted to hear. This was on the 13th of DEC, day 3 of our first trip in our 3 day old coach. Approaching the end of a very long travel day, the following symptoms ... 2011 freightliner cascadia dd15. Has code enforcement 1 5357 fail 16. Changed the delta p sensor a week ago and light - Answered by a verified Technician ... We have a 2015 freightliner cascadia, dd15 engine, codes spn 5357 fmi 16, spn 102 fmi 18, the shop 50 miles down the road baked the dpf filters made it to here and truck derated, …

DD Platform SPN 3364/FMI 1, 2, 17, 18 -GHG14 Updated diagnostic procedures 10 13-15 All information subject to change without notice. 3

65.2 SPN 102/FMI 18 – GHG14. Intake Manifold Pressure Too Low. SPN 102/FMI 18. DescriptionThis Fault Code Sets When the Intake Manifold Pressure is Lower Than Expected While The Engine is Under a Load. Monitored ParameterIntake Manifold Pressure. Typical Enabling ConditionsEngine Coolant Temperature greater than 65°C …a. If any of the additional fault codes are active, perform the associated diagnostics first:• SPN 94 / FMI 15 Fuel Filter Plugged• SPN 94 / FMI 16 Fuel Filter Plugged• SPN 97 / FMI 15 Water in the Fuel• SPN 157 / FMI 1 Rail Pressure Too High• SPN 164 / FMI (All) Rail pressure Sensor Faults• SPN 174 / FMI 0 Fuel Temperature Too High• SPN …DD15 Fuel System Technician's Guide - DDC-SVC-MAN-0037: Generated on 10-13-2008: Posted in DD15 Engine. Published by samuel07042012. ... Post navigation. Prev DD 15 – Section 8.5 SPN 164/FMI 4. Next DD 15 – Section 9.1 SPN 174/FMI 0. Leave a Reply Cancel reply. Your email address will not be published. Required fields are …SPN 157 - FMI 7 (Fault Code 755) SPN 1349 - FMI 7 (Fault Code 758) Blog.Teknisi. Subscribe to receive free email updates: ... Competency Training (18) Setting Display (17) PLC Programming (15) Basic Hydraulics (12) Starting and Charging System (10) Fuel System Caterpillar Engine (9)Mar 26, 2021 · Truck Repair. This answer was rated: ★★★★★. I have a 2020 Volvo with Code: SPN: 5018 FMI: 1. I need to…. Answered in 9 minutes by: Soot plugging the front face of the aftertreatment diesel oxidation catalyst. Engine oil or fuel contamination of the aftertreatment diesel oxidation catalyst. Cracked or contaminated aftertreatment ... 2 SPN 157/FMI 10 - GHG17 Under-Capacity in the High Pressure Circuit Table 1. SPN 157/FMI 10 Description Fuel Capacity Low in High Pressure Circuit Monitored Parameter Fuel Rail Pressure Controller Typical Enabling Conditions Engine is Running and Operating Conditions are Stable Monitor Sequence None We have a 2015 freightliner cascadia, dd15 engine, codes spn 5357 fmi 16, spn 102 fmi 18, the shop 50 miles down the road baked the dpf filters made it to here and truck derated, started a regen and the inlet doc pressure was at 2.3 psi and the one box was making a Obnoxious rumbling sound, pulled the dpf filters and the were plugged with soot, …SPN 51/FMI 2, 10, 18 August 2013 Additions, Revisions, or Updates Publication Number / Title Platform Section Title Change DDC-SVC-MAN-0084 DD Platform SPN 51/FMI 2 – All Years Most steps have been updated. GHG14 DD Platform SPN 51/FMI 10 – GHG14 Updated DDDL version. SPN 51/FMI 18 – GHG14 8 03-13 All information subject to change without ...

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SPN 4364/FMI 17. DescriptionThis Code Sets When the Aftertreatment Control Module (ACM) Detects Poor Selective Catalyst Reduction (SCR) NOx Conversion Efficiency. Monitored ParameterSCR Inlet NOx Sensor and SCR Outlet NOx Sensor. Typical Enabling ConditionsDiesel Exhaust Fluid (DEF) Dosing Enabled, 1000 to 2100 rpm, 15 to …

Dec 17, 2012 · This is what the codes our truck has active TxId: 0 SPN: 157 – Engine Injector Metering Rail 1 Pressure FMI: 18 (Low—moderate severity) Count: 3 TxId: 0 SPN: 651 – Engine Injector Cylinder #01 FMI: 5 (Current Below Normal) Count: 1 TxId: 0 SPN: 652 – Engine Injector Cylinder #02 FMI: 5 (Current Below Normal) Count: 1 TxId: 0 SPN: 653 ... Feb 18, 2021 · SPN 4364/FMI 18 - EPA10 Selective Catalyst Reduction NOx Conversion Low Table 2. SPN 4364/FMI 18 Description This fault code sets when the Aftertreatment Control Module (ACM) detects that the NOx conversion is lower than a calibrated threshold Monitored Parameter Selective Catalyst Reduction (SCR) Inlet NOx sensor, SCR outlet NOx sensor Typical ... One reads SPN 111/FMI 4 - GHG17 and the other reads SPN 111/FMI 4 - EPA07 - EPA10 - GHG14 so you may have to do a little more digging to find out which code applies to your problem. Some Final Words. Ever since technology got a hold of the engine or auto industry, everything became more complicated and confusing. Automakers have made DIY ...Join Date: Jan 2011. Posts: 805. SPN 157 FMI 18 Fault Code. "This is the toughest code to find and fix" was the quote from the mechanic after he hooked up his computer. Not what we wanted to hear. This was on the 13th of DEC, day 3 of our first trip in our 3 day old coach. Approaching the end of a very long travel day, the following symptoms ...Section 17.3SPN 1077/FMI 14. The fault condition is typically related to an internal or external leakage of the high pressure fuel system (too high, Leak Down Test). The MCM monitors rail pressure during engine shut down and compares it to a stored learned value. If the bleed down rate has changed, due to leakage, and it is below the learned ...1. Did SPN 157/FMI 16 or SPN 520268/FMI 18 appear after the fuel system was repaired or fuel filter maintenance was performed? a. Yes; the code may be set due to air in the fuel system. Clear codes and road test to verify complaint. If code does not set, release the vehicle. If code sets, Go to step 2. b. No; Go to step 2. 2.SPN 94 / FMI 15 Fuel Filter plugged. SPN 94 / FMI 16 Fuel Filter plugged. SPN 97 / FMI 15 Water in the fuel. SPN 157 / FMI 1 Rail Pressure too High. SPN 164 / FMI (All) Rail pressure sensor faults. SPN 174 / FMI 0 Fuel Temperature too High. SPN 679 / FMI 7 PLV stuck open. SPN 723 / FMI (all) Cam Sensor Codes. SPN 636 / FMI (all) crank sensor ...SPN 94 / FMI 15 Fuel Filter plugged. SPN 94 / FMI 16 Fuel Filter plugged. SPN 97 / FMI 15 Water in the fuel. SPN 157 / FMI 1 Rail Pressure too High. SPN 164 / FMI (All) Rail pressure sensor faults. SPN 174 / FMI 0 Fuel Temperature too High. SPN 679 / FMI 7 PLV stuck open. SPN 723 / FMI (all) Cam Sensor Codes. SPN 636 / FMI (all) …1 05 18-16 SUBJECT DATE SPN 5443 (ACM)(GHG17) and SPN 520372 (ACM)(GHG17) May 2016 Additions, Revisions, or Updates Publication Number / Title Platform Section Title Change DDC-SVC-MAN-0191 DD SPN 5443/FMI 0 - GHG17 Added ACM 7.56.6.0 software check SPN 5443/FMI 15 - GHG17 SPN 5443/FMI 16 - GHG17 SPN 520372/FMI 16 - …This is what the codes our truck has active TxId: 0 SPN: 157 – Engine Injector Metering Rail 1 Pressure FMI: 18 (Low—moderate severity) Count: 3 TxId: 0 SPN: 651 – Engine Injector Cylinder #01 FMI: 5 (Current Below Normal) Count: 1 TxId: 0 SPN: 652 – Engine Injector Cylinder #02 FMI: 5 (Current Below Normal) Count: 1 TxId: 0 SPN: 653 – Engine Injector Cylinder #03 FMI: 5 (Current ...Fault code 3242 fmi 18. 2018 cascadia freightliner dd 15 enine. Ran fault codes and regen using texa dianostic tools. ... 2014 Freightliner Cascadia DD15 with frequent regen. Inactive fault codes 3364 fmi 2, ... DD13 with 3364 FMI 2, Spn 4364 FMI 18, 1548 FMI 4. Wondering if I could get the troubleshooting steps for these codes ...b. If only SPN 609/FMI 13 fault is present, reprogram CPC with the proper configuration for the vehicle. Table 2. Note: The tables below shows a set of commonly miss configured source inputs that will set the code. Parameter Name Cascadia Chassis Parameter Value M2 Chassis Parameter Value CM1 DPF Source Addr SAE J1939 49 33

SPN 2659 FMI 18. Step 3 Verify Mass Air Flow (MAF) changes when Exhaust Gas Recirculation Valve (EGRV) is commanded ON. Decision Perform Air Management Test . Yes: End diagnostics, retest for SPN 2659 FMI 18. Does MAF signal decrease when EGR valve is 100% during test? No: Go to Step 4. Step 4 Verify EGRV can meet …• SPN 94/FMI 16 Fuel Filter Plugged • SPN 97/FMI 15 Water in the Fuel • SPN 157/FMI 1 Rail Pressure too High • SPN 164/FMI (All) Rail Pressure Sensor Faults • SPN 174/FMI 0 Fuel Temperature too High • SPN 723/FMI (all) Cam Sensor Codes • SPN 636/FMI (all) Crank Sensor Codes • SPN 1077/FMI 5, 6 or 14 • SPN 5571/FMI any PCV ... Fuel Rail Pressure too low SPN 520268 code Discussion in 'Ask An Owner Operator' started by Transportacion R&R, Jul 7, 2020. Page 1 of 2 1 2 Next > Jul 7, 2020 #1. Transportacion R&R Light Load Member. 175 73. Apr 10, 2020 0.Nov 24, 2020 · SPN 157/FMI 17 - GHG14. Description Minimum Rail Pressure For Injection Not Achieved. Monitored Parameter Fuel Rail Pressure. Typical Enabling Conditions Always Enabled. Monitor Sequence None. Execution Frequency MIL. Typical Duration DD13 - 90 Seconds of Cranking. DD15 - 60 Seconds of Cranking. DD16 - 60 Seconds of Cranking. Dash Lamps MIL ... Instagram:https://instagram. cengage promo code 2023 reddit 65.2 SPN 102/FMI 18 – GHG14. Intake Manifold Pressure Too Low. SPN 102/FMI 18. DescriptionThis Fault Code Sets When the Intake Manifold Pressure is Lower Than Expected While The Engine is Under a Load. Monitored ParameterIntake Manifold Pressure. Typical Enabling ConditionsEngine Coolant Temperature greater than 65°C … un mundo maravilloso • SPN 94/FMI 15 or 16 Fuel Filter Plugged • SPN 157/FMI 1 Rail Pressure too High • SPN 164/FMI (All) Rail Pressure Sensor Faults • SPN 174/FMI 0 Fuel Temperature too High • SPN 1077/FMI 5 or 6 Quantity Control Valve Current • SPN 1077/FMI 14 High Pressure Leakage Too High • SPN 520251/FMI (All) PCV High Side Error mangafox manga 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). I took time and looked the code up and it read low pressure in fuel rail, also I must add the truck was running and starting just fine. About a week went by, the truck didn’t want to start, when we got the truck started it was ... Detroit DD15 GHG14 (2014-16) Fault Code: SPN 157 FMI 17 (MCM) Minimum Rail Pressure Not Achieved While the Engine is Cranking. DESCRIPTION: ... Allison $ 18.00. Rated 0 out of 5. SERVICE MANUAL International Engines MaxxForce DT 9 10 (2014 & Newer) INTERNATIONAL ENGINES $ 17.00. cheryl ann only fans leaked Car Questions. Truck Repair. It’s showing this code spn 520268 fmi 16. Dd 15. Refer to troubleshooting for SPN 157/FMI 16. Refer to section "SPN 157/FMI 16 - EPA07 - EPA10 - GHG14" .Feb 18, 2021 · SPN 4364/FMI 18 - EPA10 Selective Catalyst Reduction NOx Conversion Low Table 2. SPN 4364/FMI 18 Description This fault code sets when the Aftertreatment Control Module (ACM) detects that the NOx conversion is lower than a calibrated threshold Monitored Parameter Selective Catalyst Reduction (SCR) Inlet NOx sensor, SCR outlet NOx sensor Typical ... fedex drop off ormond beach SPN 157/FMI 17 - GHG14. Description Minimum Rail Pressure For Injection Not Achieved. Monitored Parameter Fuel Rail Pressure. Typical Enabling Conditions Always Enabled. Monitor Sequence None. Execution Frequency MIL. Typical Duration DD13 - 90 Seconds of Cranking. DD15 - 60 Seconds of Cranking. DD16 - 60 Seconds of Cranking. Dash Lamps MIL ... espn picks week 4 Adriana DIAS | Cited by 7 | of Universidade Federal da Paraíba, João Pessoa (UFPB) | Read 12 publications | Contact Adriana DIAS craigslist virginia hampton roads SPN 51/FMI 2, 10, 18 August 2013 Additions, Revisions, or Updates Publication Number / Title Platform Section Title Change DDC-SVC-MAN-0084 DD Platform SPN 51/FMI 2 – All Years Most steps have been updated. GHG14 DD Platform SPN 51/FMI 10 – GHG14 Updated DDDL version. SPN 51/FMI 18 – GHG14 8 03-13 All information subject to change without ... Engine: DD15 GHG14 (2014-16)MCM PID: N/A SPN: 157 FMI: 10. Description: Under-Capacity in the High Pressure Circuit Troubleshooting: NOTE: The motor control module (MCM) monitors the rail pressure and when rail pressure deviation is greater than 200 bar, the MCM sets the code. POSSIBLE CAUSES: 1.SPN#157, FMI#18 ― Fuel Pressure Lower Than Commanded Pressure. MALFUNCTION. TEST OR INSPECTION. CORRECTIVE ACTION. 1. Multiple fault codes. 1. Install fuse … houses for rent in jackson ms craigslist Feb 18, 2021 · SPN 4364/FMI 18 - EPA10 Selective Catalyst Reduction NOx Conversion Low Table 2. SPN 4364/FMI 18 Description This fault code sets when the Aftertreatment Control Module (ACM) detects that the NOx conversion is lower than a calibrated threshold Monitored Parameter Selective Catalyst Reduction (SCR) Inlet NOx sensor, SCR outlet NOx sensor Typical ... High pressure pump internal failure Fuel injector (amplifier or needle) leakage Fuel Contamination Rail pressure sensor Motor Control Module (MCM) NOTE: It is important to obtain information from the customer on when the check engine lamp occurs and if there were any performance concerns or exhaust smoke. vlp wichita ks An FMI 9 failure code is an issue with the CAN communication where data is not being sent and received in a timely way by the engine computer. An example is a slow response or non-response from a VGT actuator or EGR valve, this will cause FMI 9 fault. FMI 10 means that a computer is receiving data but is expecting changes and not getting them ...PACCAR PX-9 CM2350 (2013-17) Fault Code:3634 PID: SPN:5484 FMI:4 Engine Fan Clutch 2 Control Circuit – Voltage Below Normal or Shorted to Low Source DTC TRUCKS Rated 0 out of 5 walmart asset protection manager salary Oct 23, 2020 · Truck Diagnostic Technician. Vocational, Technical or Tra... 3,031 satisfied customers. I have a freightliner Columbia and I'm getting this codes. hi I have a freightliner Columbia and I'm getting this codes low 128 157 01 sht lo 128 164 04 SAM SA33 spn520909 CHASS SA71 SPN520604 … read more. gadsden times obituaries past 30 days We came across one that read SPN 111 FMI 18 that also was triggered by the coolant level issues. Sometimes this code will read SPN 111 FMI 1/18. That tells you more specific information but also tells you that you may get 18 to 20 different code numbers for SPN 111. The ECM will take 20 seconds to turn the alert off after it detects the right ...5 Sep 2012 ... This low power condition and/or the SPN157 Code are a result of low fuel pressure which could be caused by a restriction in the fuel system ...