Spn 157 fmi 18 dd15.

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. The ECM has detected that fuel pressure is lower than commanded pressure. Possibly hard to start or low power. Engine could possibly not start

2 SPN 3058/FMI 10 - GHG17 Exhaust Gas Recirculation Slow Response Table 1. SPN 3058/FMI 10 Description This Fault Code Sets When Actual EGR Flow vs. Desired EGR Flow is Greater than a Calibrated Threshold. Monitored Parameter EGR delta P Sensor, Intake Manifold Pressure Sensor, Intake Manifold Temperature Sensor .

Codigos de falla MCM DD15 - Read online for free. Scribd is the world's largest social reading and publishing site. ... Shorted to Ground 3588 3 SID 157 1552 Ether Start, ... PID/SID FLASH SPN FMI PID/SID ID CODE FAULT DESCRIPTION 3720 15 SID 155 1625 DPF Ash Clean Request 3720 16 SID 155 1625 DPF Ash Clean Request ...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. The ECM has detected that fuel pressure is lower than commanded pressure. Possibly hard to start or low power. Engine could possibly not startDec 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 ... SPN: 157 "Engine Injector Metering Rail". How to diagnose/fix/reset ‐ directions and photos are below. Step 1: When your pump cranks , but will not start and ...

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 - …I have a 2016 DD15 with 693k miles. Last night she lit up like a Christmas tree; displaying the following two codes and message: SPN 4364 FMI 18 SPN5246 FMI 0 engine derage 25% DEF Quality poor, Check DEF Red Stop Engine light Was on as well, DEF light was blinking but couldn’t force regen. truck limited me to 5mph

2 SPN 3058/FMI 10 - GHG17 Exhaust Gas Recirculation Slow Response Table 1. SPN 3058/FMI 10 Description This Fault Code Sets When Actual EGR Flow vs. Desired EGR Flow is Greater than a Calibrated Threshold. Monitored Parameter EGR delta P Sensor, Intake Manifold Pressure Sensor, Intake Manifold Temperature SensorI 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.

Detroit DD15 motor. 3 months ago the freightliner dealer cleaned the DPF when an injector was replaced so probably not the issue. ... spn-86826 fmi 17; spn-153412 fmi 19; spn 153412 fmi 19 and spn 157 fmi 18 ... Stop Engine light, MIL, check engine on. SPN 5298 FMI 18 - Status: Active DV but below normal operating range - (Moderately …I have a fault code SPN 157 FMI 18 SA 0. It has appeared 3 times. The first time, I was able to go to a Freightliner repair facility where they connected to the insite program and determined low fuel pressure. They changed the fuel filters and cleared the code and i was on my way. Shortly after that the check engine and MLI came on.Not sure a 2015 freightliner dd15 automatic transmission. Codes for spn 520268 fmi 16 And Spn 157 fmi 16 Also engine won't start. Customer reply replied 2 years agoMake: DetroitEngine: DD15 GHG17 (2017 & Newer)PID: N/ASPN: 3217FMI: 3. Description: Selective Catalyst Reduction Inlet NOx Sensor Circuit Failed High. Troubleshooting: DESCRIPTION: This code sets when there is a short to power on the SCR inlet NOx circuit between the sensor. and ECU.


Cvs minute clinic std test

I got a 2013 Peterbilt with a Cummins isx 15. For the last two weeks I've been getting a check engine light with code spn 157 FMI18 Fuel rail pressure, code reads fuel rail pressure valid but below average. Truck sat for two weeks over holidays and I replaced both fuel filters and the fuel rail pressure sensor.

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 (149°F) Monitor ....

SPN 100/FMI 1 - GHG17 SPN 100/FMI 18 - GHG17 DDC-SVC-MAN-0193 MCM - GHG17 DD Platform MD SPN 100/FMI 0 - GHG17 Added note to diagnostic procedures. SPN 100/FMI 1 - GHG17 ... 2 SPN 100/FMI 0 - GHG17 Oil Pressure Stuck Table 1. SPN 100/FMI 0 Description This fault code sets when the engine oil pressure is higher than aFuel 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.Apr 6, 2017 · 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 ... 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 ...2 SPN 4364/FMI 18 – GHG14 SCR NOx Conversion efficiency low Table 1. SPN 4364/FMI 18 Description This code sets when the Aftertreatment Control Module (ACM) detects that the Selective Catalyst Reduction (SCR) NOx Conversion efficiency is low. Monitored Parameter SCR inlet NOx sensor and SCR outlet NOx sensor• 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

Detroit DD13 GHG14 (2014-16) Fault Code: SPN 5018 FMI 18 (ACM) Diesel Oxidation Catalyst Efficiency FaultSPN 1077 / FMI 5, 6 or 14. If only SPN 1077/7, 157/16 or 1077/31 is present, Go to step 7. NOTE: Do not reset this counter unless the PLV is being replaced. Using DiagnosticLink 8.x, check the value of Pressure Limiting Valve (PLV) openings. With key ON, engine OFF select the Actions tab in the top tool bar.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, …After repairs are complete, retest for SPN 654 FMI 18. Step 2. Check fuel for contamination. Decision. Perform Fuel Quality Check . Yes: Drain fuel tank and fill fuel tank with appropriate diesel fuel. After repairs are complete, retest for SPN 654 FMI 18.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.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 3464/FMI 18. DescriptionThis Fault Code Sets When the Intake Manifold Pressure is Lower Than Expected While The Vehicle is in Regeneration. ... For DD15 TC and DD16: Refer to section "Removal of the DD15 and the DD16 Turbocharger" . Verify repair. Printed Thu Jan 09 2020 14:00:07 GMT-0500 (Eastern Standard Time) ...

Aug 15, 2019 · Technician: Mike Mcmillan. `. SPN 157 FMI 14 - Fuel Rail Pressure Relief Valve Failure. Fault Overview. Fault code sets when Engine Control Module (ECM) detects Fuel Rail Pressure (FRP) sensor indicates a relief valve opening fault. Lamp Reaction. No Lamp. Associated Faults. SPN 157 FMI 3, 4, 20 and 21 (FRP) Jul 14, 2021 · Hope this is helpful,,I know I've been down the wrong hole from time to time. Aug 15, 2019 · Technician: Mike Mcmillan. `. SPN 157 FMI 14 - Fuel Rail Pressure Relief Valve Failure. Fault Overview. Fault code sets when Engine Control Module (ECM) detects Fuel Rail Pressure (FRP) sensor indicates a relief valve opening fault. Lamp Reaction. No Lamp. Associated Faults. SPN 157 FMI 3, 4, 20 and 21 (FRP) 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 ...Any suggestions , location of sensor. DD15 in 2012 Cascadia Fmi 16 5357 Fmi 20 3563 Fmi 1 2631 Fmi 13 108 Emil Baran, Jun 1, 2017. Emil Baran, Jun 1, 2017 #1 + Quote Reply. ... SPN 5357/FMI 16 Description Fuel Quantity High Detected ... bad-luck posted Oct 18, 2023 at 6:45 PM. Volvo D13 P006964 gman07 posted Oct 18, ...a. If other faults are active in addition to SPN 5018/FMI 18, troubleshoot those faults first. b. If only SPN 5018/FMI 18 is present, Go to step 4. WARNING: PERSONAL INJURY To avoid injury before starting and running the engine, ensure the vehicle is parked on a level surface, parking brake is set, and the wheels are blocked. WARNING: ENGINE ...157 related to the 164. 83.1 SPN 157/FMI 18 - EPA10 - GHG14. Fuel Rail Pressure Too High. SPN 157/FMI 18. DescriptionFuel Rail Pressure Too High. ... 2011 cascadia dd15 with spn 157 fmi 16 code. mil light is on and when I am at almost full throttle the check engine light comes on and I lose power. ...Spn 4374 fmi 0 Freightliner cascadia under pressure def system. Already replaced def pump complete, def line from tank - Answered by a verified Technician ... 2016 Freightliner Cascadia dd15 Detroit engine. I have a fault code on. It is txld: 61 SPN: 3556 Aftertreatment 1 hydrocarbon Doser 1 FMI 18 (low-moderate severity) ...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.


La 14 day weather forecast

1. Did SPN 157/FMI 16 or SPN 520268/FMI 16 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.

Check for active SPN 164/FMI 0. Is SPN 164/FMI 0 active? Yes; replace the quantity control valve. Refer to section "Removal of the Quantity Control Valve - Three-Filter System" . Refer to section "Removal of the Quantity Control Valve - Two-Filter System" . No; replace the MCM module. 83.1 SPN 157/FMI 18 - EPA10 - GHG14. Fuel Rail Pressure …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 ...• 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 Codes • SPN 1077/FMI 5, 6 or 14 9.a Yes; perform the associated ...Engine: DD15 GHG14 (2014-16) PID: N/A SPN: 158 FMI: 2. Description: Ignition Switch Not Plausible Troubleshooting: NOTE: Please see the step by step troubleshooting procedures for this specific code. NOTE: If inactive, clear the code, cycle the engine, and see if comes back. If it doesn’t problem solved. Otherwise, possible failures …Aug 15, 2019 · Technician: Mike Mcmillan. `. SPN 157 FMI 14 - Fuel Rail Pressure Relief Valve Failure. Fault Overview. Fault code sets when Engine Control Module (ECM) detects Fuel Rail Pressure (FRP) sensor indicates a relief valve opening fault. Lamp Reaction. No Lamp. Associated Faults. SPN 157 FMI 3, 4, 20 and 21 (FRP) Engine 2 SPN 102 FMI 18 on a DD15 Discussion in 'Freightliner Forum' started by SouthernKomfort, Jun 18, 2020. Page 1 of 3 1 2 3 Next > Jun 18, 2020 #1. SouthernKomfort Bobtail Member. 33 10. May 31, 2020 ... Engine 2 SPN 102 FMI 18 Air Intake System Problem Detected 25% Derate1 06 01-18 SUBJECT DATE SPN 520371 (ACM) (GHG17) June 2018 Additions, Revisions, or Updates Publication Number / Title Platform Section Title Change DDC-SVC-MAN-0200 GHG17 DD8 SPN 520371/FMI 16 - GHG17 Updates to the DD8 that also transfer to the DD5. DDC-SVC-MAN-0193 GHG17 DD5 SPN 520371/FMI 16 - GHG17a. 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 …Hope this is helpful,,I know I've been down the wrong hole from time to time.SPN 100/FMI 1 - GHG17 SPN 100/FMI 18 - GHG17 09 05-16 All information subject to change without notice. 3 ... 2 SPN 100/FMI 0 - GHG17 Oil Pressure Stuck Table 1.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 ...

I got a 2013 Peterbilt with a Cummins isx 15. For the last two weeks I've been getting a check engine light with code spn 157 FMI18 Fuel rail pressure, code reads fuel rail pressure valid but below average. Truck sat for two weeks over holidays and I replaced both fuel filters and the fuel rail pressure sensor.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 ... Nov 27, 2014 · Cascadia DD15 Doser Injector Discussion in ' ... It will look like SPN 3242 FMI #. ... MandoDub posted Oct 18, 2023 at 9:33 AM. 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 (149°F) Monitor ... kobalt kst 120x 06 26 Mei 2021 ... Something is causing you to have low fuel pressure ... Other than the fuel filters . Do you have one fuel tank or two ? You may have something ...SPN: 157. FMI: 0/16. Lamp: Amber. REASON: The engine control module (ECM) has detected that fuel pressure is higher than the commanded pressure. EFFECT: Engine will only idle or will shut down. Circuit Description: The engine control module (ECM) supplies voltage to open the fueling actuators for a short length of time. panda dunk size 6 CODES: Fault Code: 559. PID (P), SID (S): P157. SPN: 157. FMI: 1/18. Lamp: Amber. REASON: The ECM has detected that fuel pressure is lower than commanded pressure. EFFECT: Possibly hard to … stihl ms 362 parts diagram pdf Sep 19, 2018 · Cat C9 Code SPN 157 FMI 17. Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts. I had code SPN 157 FMI 17 come up. I bring my Motorhome to Empire Cat who say it can be a number of things but that they have a diagnostic plan based on this code that they can check to find and diagnose. parentvue long beach 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 ...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 ... varuna aveda reviews Roy. 250.1 SPN 1231/FMI 9 - EPA10 - GHG14. Aftertreatment Control Module Message Not Received or Has Stopped Arriving. SPN 1231/FMI 9. DescriptionThis Fault Code Sets when the Motor Control Module (MCM) Stops Receiving Messages from the Aftertreatment Control Module (ACM) Monitored ParameterACM Controller Area …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 ... pentair ic20 manual Number (SPN), and Failure Mode Indicator (FMI) Descriptions ... 16 Engine Fuel Filter Differential Pressure (see also SPN 1382) 18 Engine Fuel Pressure (Extended Range) 19 Engine Oil Pressure (Extended Range) ... 157 Engine Fuel 1 Injector Metering Rail 1 Pressure 158 Key Switch Battery PotentialSPN 157/FMI 10, 15, 17, 18 - GHG14 July 2013 Additions, Revisions, or Updates Publication Number / Title Platform Section Title Change DDC-SVC-MAN-0084 DD Platform SPN … pay ambetter insurance 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 33375.2 SPN 3556/FMI 18 - EPA10. Diesel Oxidation Catalyst Outlet Temperature Low (Low Temp Regeneration) SPN 3556 /FMI 18. DescriptionThis code sets when the exhaust temperature does not increase above the modeled threshold when the low temp regeneration is enabled. Monitored ParameterDiesel Oxidation Catalyst (DOC) … craigslist jobs austin texas SPN 157/FMI 10, 15, 17, 18 - GHG14 July 2013 Additions, Revisions, or Updates Publication Number / Title Platform Section Title Change DDC-SVC-MAN-0084 DD Platform SPN 157/FMI 10 - GHG14 Updating diagnostics to add both two and three-filter fuel system section references. Updating step 3b. Updating DDDL version in steps 8 and 22. SPN 157/FMI 15 ... vizio tv power cord plug in Engine: DD15 GHG14 (2014-16) PID: N/A SPN: 158 FMI: 2. Description: Ignition Switch Not Plausible Troubleshooting: NOTE: Please see the step by step troubleshooting procedures for this specific code. NOTE: If inactive, clear the code, cycle the engine, and see if comes back. If it doesn’t problem solved. Otherwise, possible failures …Series 60 - SPN 100/FMI 4 – ENGINE OIL PRESSURE OUTSIDE OF NORMAL OPERATING RANGE. This diagnosis is typically an Engine Oil Pressure Sensor circuit failed low. 26.3.1 Failed Low Circuit Check Check as follows:… craigslist pets eugene Cummins SPN 157 FMI 18? We gave you one meaning to this code but like most error codes, there is more than one meaning behind the letters and numbers. Here are three … antonyms thesaurus dictionary I have a fault code SPN 157 FMI 18 SA 0. It has appeared 3 times. The first time, I was able to go to a Freightliner repair facility where they connected to the insite program and determined low fuel pressure. They changed the fuel filters and cleared the code and i was on my way. Shortly after that the check engine and MLI came on.• SPN: 3251, FMI: 0 - DPF Pressure Out of Range Very High • SPN: 3251, FMI: 20 - DOC Inlet Pressure Sensor - Not Plausible • SPN: 102, FMI: 18 - Intake Manifold Pressure Too Low • SPN: 3556, FMI: 1 - Regen Temperature - Out of Range Low ... DD15 : D472906 D472909 . 2014 : 2015 March, 2012 to December, 2015 . Vocational Applications ...Make: DetroitEngine: DD15 GHG17 (2017 & Newer)PID: N/ASPN: 3217FMI: 3. Description: Selective Catalyst Reduction Inlet NOx Sensor Circuit Failed High. Troubleshooting: DESCRIPTION: This code sets when there is a short to power on the SCR inlet NOx circuit between the sensor. and ECU.