Paccar high exhaust temp. the things you have to go through to be an .
Paccar high exhaust temp I have a 2015 Peterbuilt with tha MX13 in it Paccar MX13, getting a exhaust gas temperature before DPF (target) getting a exhaust gas temperature before DPF (target) and also inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent. HC Desorb is basically a quicker Regen without dosing fuel and temps stay around The Paccar MX13 Exhaust Back Pressure Valve (EBPV), specifically for models from 2018-2025, plays a critical role in regulating exhaust flow. SET CONDITIONS: The PCI ECU (D420) detects that measured pressure before turbine is lower than the requested pressure before turbine for more than 40 seconds. Therefore, it is important to WARNING Pay attention to the HEST warnings prior to, during, and immediately Decode Paccar MX 13 fault code list with our comprehensive list and troubleshooting tips. 17. Unfortunately, EGR valves are notorious for clogging due To fix high exhaust temperature, start by cleaning or replacing clogged/damaged parts in the exhaust system. If it happens when I am about to park I will park and idle the engine up a bit until self reden is completed. You must keep combustibles at least 1. P2080 - Exhaust gas temperature sensor circuit range/performance bank1 sensor 1. I know the exhaust temp before DOC must reach 482 degrees before the doser will start, but I Notification of High Exhaust System Temperature: Indicator Information What to do “EXHAUST SYST. _____ 2012 Discovery 40X, 2014 Wrangler JK Unlimited Sp. MX-11 engine pdf manual download. That's why the light won't go out right away after replacing it. 9 liters, catering to a power range of 260 to 450 horsepower and P2083: Exhaust Gas Temperature Sensor Circuit High Bank 1 Sensor 1; By understanding the P2080 code, its causes, and potential solutions, engineers and mechanics can effectively diagnose and repair this issue to ensure optimal 3. The highest I've ever seen was 1739f. The Engine Control Module (ECM) supplies 5 volts to the EGR temperature sensor signal circuit and a ground for the low reference circuit. Mar 25, 2020 #1 The HC Desorb protects the aftertreatment by using a controlled exhaust temp increase to remove unburt HC's in a controlled manner. com, America's online marketplace for heavy duty parts. – ECU pin A21, voltage too high: P3797: Exhaust temperature before SCR I'm working on a paccar mx that will not get hot enough to do a stationary regen. Sign In Upload. Aftertreatment System Over Temperature P2428-00: Exhaust Gas Temperature Too High D i r e c t i o n s : The above DTCs commonly fault in correlation to an upstream component failure that causes high temperature readings in the EATS. Diesel EGT (Exhaust Gas Temperature) sensor, like types, locations, installation, data analysis for performance tuning, and troubleshooting. The aftertreatment diesel particulate filter outlet temperature sensor is not changing with engine operating conditions. If the High Exhaust System Temperature (HEST) warning lamp is on: • Do not park in an area of combustible vapors or materials. 21 This code indicates a problem with the Aftertreatment 1 Diesel Exhaust Fluid (DEF) tank temperature, and ignoring it could lead to more serious issues down the road. The high exhaust temp HET will come in to warn you not to park over an area that could catch fire or over flamable materials. The engine mode is DOC heating or DPF regeneration or SCR heating or SCR high efficiency or standard or protection. he cleaned the dpf and put a temp sensor module in it, along with fixing a exhaust leak on a bellow pipe after the turbo. The EGR temperature value is used by the ECM for the engine protection system and engine emissions control. Reduce vehicle * Calculates exhaust gas pressure before the turbine; Higher measured precompressor temperature results in lower calculated exhaust gas pressure before the turbine. Hi, I have paccar mx 13 engine in 2016 Kenworth. Typical air/fuel ratios are 18 to 45. 0 177Hp, (DAVA) which I just had the EGR cooler replaced on due to disappearing coolant issue. Compression Brake. PACCAR MX (2004 Emissions) Fault Code: P1717 Exhaust Gas Temperature After BPV - Data Erratic, Intermittent or Incorrect PACCAR MX (2004 Emissions) Fault Code: P1717 Exhaust Gas Temperature After BPV - Data Erratic, Intermittent or Incorrect. may become necessary. Shortly after picking the van up from the garage the check engine light and the glow plug light came on. I know the exhaust temp before DOC must reach 482 degrees before the doser will start, but I get to 472 and that is all. Allow the engine to cold soak so the temperature of the exhaust stabilizes with the ambient air temperature. (which is now fixed). Paccar high idle Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by insanityeight, Mar 25, 2020. Price: $1,950. Cross References: EM75-69000-HT, 049-EM7569000HT, EM7569000HT, M13-6001, M136001 A cross Looking for the OEM Paccar Engine Sensor-Temperature Exhaust Gas 2144718PE? Find it and many more Paccar Engine parts at the lowest prices at Big Rig World! Looking for the OEM Paccar Engine Sensor-Temperature This is a brand new FullTilt Performance CeramiChrome Exhaust Manifold! Paccar MX13 High Performance Ceramic Coated Exhaust Manifold (2013-2019), New Then there is an application of their high temperature resistant Exhaust temp sensor isn't actually read until the motor heat gets to about 90 degrees, then it starts reading. EGT K Type Thermocouple PACCAR MX (2004 Emissions) Fault Code: P1724 Exhaust Gas Pressure Before Turbine – Data Valid but Too High. This engine features a robust design with a displacement of 8. If temp#3 is reading right and it is too hot that means the regen burn is happening in DPF, not the DOC. The monitored Pump Module value will indicate when dosing starts. Home / DTC TRUCKS / PACCAR / PX-6 CM2150 (2007-09) / PACCAR PX-6 CM2150 (2007-09) Fault Code: 1878 PID: SPN: 3245 FMI: 2 Aftertreatment Exhaust Gas Temperature 3 – Data Erratic, Intermittent, or Incorrect. Submit. This is the maximum temp the outlet temp sensor has ever read. Paccar 1873020 - Exhaust Gas Recirculation (EGR) Temperature Sensor Part Number 1873020 Manufacturer PACCAR Description H Title: 2010 MaxxForce 11/13 Aftertreatment Service Applies To: 2010 MaxxForce 11/13 Countries: CANADA, UNITED STATESDocument ID:IK1200839 Availability: ISIS Revision: 2 Major System: ENGINES Created: 11/12/2012 Current :Language:English Last Modified8/5/2013 Other Languages:NONE Author: Steve Kueller Viewed: 9291 Less Info ideDtals C od ingIfrmat to inform the driver when the exhaust temperature exceeds HEST Warning Temperature Activation Limit and the vehicle speed is less than Minimum Speed for High Exhaust Temp Warning (N065). Manuals; High Exhaust System Temperature (HEST) Warning Lamp. Page 92 Comprehensive Parameter List N065 Page Default Units Minimum Speed for High Exhaust Temp Warning Paccar MX-13 Diesel Engine Pdf User Manuals. View online or download Paccar MX-13 Diesel Engine Operator's Manual, Programming Manual. whatsapp +51955515985 [email protected] 24/7 Customer Support; Facebook-f Find many great new & used options and get the best deals for Oem Paccar Peterbilt 2131916PE Sensor-Exhaust Gas Temp at the best online prices at eBay! Free shipping for many products! Paccar MX13 low regen temp Finally had this thing put on after a few other parts were ordered and now the temp at the BPV is above 640. Looking for the OEM Paccar Engine EPA Exhaust Gas Temperature Sensor 2131916PE? Find it and many more Paccar Engine parts at the lowest prices at Big Rig World! High-Pressure Fuel Lines; Low-Pressure Fuel Lines; Nylon Fuel Lines; Other Fuel Line Components; Rubber Fuel Lines; Steel Fuel Lines; View All Products . The engine mode is SCR high efficiency or standard or protection 5. Summary. Adjusting the timing setting can also help in reducing high Page 19 ENGINE OPERATION - Operating Instructions High Exhaust System Temperature During a regeneration, some EAS plosion and cause serious injury to by- components can PACCAR PX-8 CM2150 (2007-09) Fault Code: 1972 PID: SPN: 3245 FMI: 0 Exhaust Gas Temperature 3 – Data Valid but Above Normal Operational Range – Moderately Severe Level. Pyrometer shows exhaust heat right after the turbo. You're reviewing: Peterbilt Exhaust Mount Bushing Kit (High Temp) Your Rating. Keep vehicle a safe distance from Description: Sensor-Exhaust Gas Temp Condition: New Brand: Paccar® Part Number: 2131916PE Other Oem P/N: 2131916PE, 2131916 Manufacturer information Headquartered in Bellevue, WA, PACCAR® is a Fortune 500 Order Now Paccar 2129818PE Exhaust Gas DPF Temperature Sensor. On various engines / instrument clusters (and mine) a pre-indicator of the need for regen is the 'after treatment diesel particulate filter' lamp - there's some specific recommended actions for the driver. An Exhaust Gas Recirculation (EGR) Temperature Sensor is an electrical sensing probe that monitors EGR temperature going in and out of the EGR Cooler and transmits the signal to the engine control control module. Close search. 4. Fuel Pumps & Components PACCAR MX (2004 Emissions) Fault Code: U1879 CAN Communication - Message (A1SCREGT) Out of Range, Exhaust Gas Temperature before SCR Catalyst from. TEMP HIGH” The High Exhaust Temperature (HEST) warning lamp will illuminate, Using DAVIE, select the following Monitor values to record: Exhaust Temperature Before SCR Exhaust Temperature After SCR Pump Module Once the SCR temperatures have reached a The EGR (Exhaust Gas Recirculation) valve is critical in reducing emissions by recirculating some exhaust gases back into the engine. com; The Peterbilt Paccar PX-9 Truck Engine is engineered to deliver optimal performance and efficiency for medium-duty applications. What does that mean? This is a generic powertrain code that is applicable to most makes and models manufactured from 1996 onwards. High signal voltage or open circuit detected at the diesel exhaust Hi Everbody! I have a 2017 Crafter 2. Nickname. WARNING! Temperature of the tail pipe, exhaust pipe, the diesel particular I'm working on a paccar mx that will not get hot enough to do a stationary regen. PACCAR MX (2004 Emissions) Fault Code: P1867 Exhaust Gas Temperature After BPV - Data Valid but Too High. Enjoy the coach. Skip to content. CORRESPONDING OBD READINESS MONITOR: Exhaust gas sensors monitor. View online or download Paccar MX-11 Operator's Manual, Programming Manual. RESET CONDITION: This DTC changes to inactive when the fault is no longer detected. There are several reasons to increased DEF consumption. 1. FSS Emission Products Heavy Duty aftermarket replacement for Paccar 1840460PE EGT sensor. Cheers to who this may help. The coolant temperature is above 50°C [122°F] and 3. Brand: GPD. Turn the ignition ON (key ON, engine OFF). I will tell you thatthe things you have to go through to be an On my ISL 9 (Cummins 450) I get a high exhaust temp lamp that indicates a regen, but no other known indicator. SET CONDITIONS: The PCI ECU (D420) detects that measured pressure before turbine is higher than the requested pressure before turbine for more than 40 seconds. Exhaust temp sensor voltage to high code Has anyone seen the code SPN 173 FM 3 exhaust temp sensor voltage too high? Did it to me st the end of the ride today. Find many great new & used options and get the best deals for Paccar Peterbilt DAF 2013048 Exhaust Gas Temp Sensor at the best online prices at eBay! Free shipping for many products! WARNING: Temperature of the tail pipe, exhaust pipe, diesel particular<br /> filter (DPF), selective catalytic reduction (SCR) device and surrounding<br /> components Available for: Paccar MX13 Model Year 2017-2024 Key Benefits. The lambda sensor (F834) is in the operating mode (if applicable). 9L 6 Cyl MX-13 PACCAR DIESEL: Show More. 15 minute timing is also about right. Holiday Hours: We will be Closed December 31st. Exact replacement OEM replacement without the high price, Free ground shipping, Temperature sensors monitor exhaust gas temperature in different points I find it awfully hard to believe your exhaust temp is only 200 degrees during a regen. 88310 | Cummins ISC (Paccar PX8) High Performance Exhaust Manifold, New | Write a review . High Exhaust System Temperature (HEST) Warning Lamp Engine aftertreatment system includes a high exhaust system temperature (HEST) warning lamp. if for whatever reason engine is producing more NOx the consumption will be higher. 2017 Emissions, 2017-2018 Model Years Warranty. 18. Keep vehicle a safe distance from combustible items. Any takers? Exhaust Manifold Ceramic Coated for Paccar 1319 Paccar MX OEM Numbers: 9886 & 9887. PACCAR MX (2004 Emissions) Fault Code: U1879 CAN Communication - Message (A1SCREGT) Out of Range, Exhaust Gas Temperature before SCR Catalyst from Fault Code:195-3 PID:111 SPN:111 11. Is the DPF outlet temperature sensor within 25°C (45°F) of the other exhaust temperature sensors? a. 19. 13. Paccar 2129818PE exhaust gas temperature sensor and Paccar 2129818 exhaust gas temperature sensor by Dinex Emissions are exceptional values without sacrificing quality, fitment, or performance. * View online or download Paccar PX-9 Operator's Manual. EIST Shutdown on the Driver Display. 5 m (5 ft) away from the exhaust (outlet) stream (as it exits the tail pipe) while the HEST lamp is illuminated. Part Number: 133464-06431488. The warning lamp alerts the operator to the impending shutdown. X12 CM2350 X119B X15 CM2350 X114B X15 CM2350 X116B Issue Diesel exhaust fluid (DEF) header assembly related fault codes, causing DEF urea quality sensor malfunctions. A higher measured boost pressure results in higher calculated exhaust gas mass flow. 20% average airflow increase in key areas; Up to 100 degree cooler EGTs; Made in the USA; Warranty: 2 Year Unlimited Mile Warranty OEM Reference Part Number: 2021 Multiplex Electrical System - Peterbilt Cummins Paccar engines stand out with the MX-13 and MX-11 series, which are known for their reliability and performance, especially in the commercial vehicle sector. 7 CM2350 B121B L9 CM2350 L116B. * View and Download Paccar MX-11 operator's manual online. High Exhaust System Temperature (HEST) Warning allows the engine to inform the operator when the exhaust temperature exceeds “HEST Warning Temperature Activiation Limit” High Exhaust System Temperature (HEST) Warning Lamp Engine aftertreatment system includes a high exhaust system temperature (HEST) warning lamp. The lambda sensor (F834) is in the operating mode (if applicable) CORRESPONDING OBD READINESS MONITOR: Exhaust gas sensors monitor. Looking for the OEM Paccar Engine Sensor-Temp Exhaust Gas In T4 2013048PE? Find it and many more Paccar Engine parts at the lowest prices at Big Rig World! High-Pressure Fuel Lines; Low-Pressure Fuel Lines; Nylon Fuel Lines; Other Fuel Line Components; Rubber Fuel Lines; Steel Fuel Lines; View All Products . SET CONDITIONS: The PCI ECU (D420) detects that the measured pressure before turbine is higher than the expected pressure before turbine for more than 50 seconds. This code can be found in vehicles from [] PACCAR MX (2004 Emissions) Fault Code: P1867 Exhaust Gas Temperature After BPV - Data Valid but Too High. High Exhaust System Temperature (HEST) Warning Lamp. In this blog post, we’ll break down everything you need to know about SPN 3515: what it means, how to identify its symptoms, common causes of the issue, and most importantly Wire 1268A: exhaust gas temperature sensor downstream of the catalytic converter A: signal is Pin (1) on the Upstream Exhaust Gas High Temp Sensor (UEGHTS) Wire 1433A: pre-catalyst downstream exhaust temperature sensor earth A: signal is Pin (2) on the (UEGHTS) These go to the 53 Pin Brown connection plug on the engine ECU: 1268A = Pin (20) on ECU Hi, thanks for reaching out to me. Engine Braking System EIST Coolant and Ambient Air Temperature Limits. Monitor the DPF outlet temperature sensor reading. SET CONDITIONS: The DTC is set if the pressure after BPV corrected for the ambient pressure is higher than the threshold which is based on the exhaust gas mass flow. GPD Exhaust Temperature Sensor - End of SCR Catalyst . eration when engine is under high or heavy loading. DEF is owed to reduce NOx emissions. Be careful when you replace it, the dang things like to gauled in the pipe. Contents Product Affected: B6. 888-919-PROS (7767) Then we apply our high temperature resistant CeramiChrome 2. Order Now Paccar 2129818PE Exhaust Gas DPF Temperature Sensor. When the coolant temperature is above 50°C [122°F] and 4. Manuals; Brands; Paccar Manuals; Engine; PX-9; Paccar PX-9 Manuals. Part Number: EGT460PE. The HET will usually go off. voltage too high: P3754: Exhaust temperature before DPF sensor (F839) – ECU pin B18, voltage too low: P3755: Exhaust 2013 PACCAR MX-13 – P006C Pressure before turbo (humidity sensor) – Data erratic, intermittent, or incorrect at ignition on P0073 Ambient temperature – Voltage too high or short circuit to supply on ECU D420 pin PACCAR MX (2004 Emissions) Fault Code: P1039 Exhaust Gas Pressure After BPV – Data Valid but Too High. Are you mistakenly looking at coolant temp rather than exhaust temp? rhitrucking, May 19, 2019. Price. Such as dry grass etc. They did update software as PACCAR recommends the following for best operational performance for the MX-13 EPA2010 en-gine: • Prolonged periods of low idle RPMs and high idle times at low ambient temperatures, along with low coolant temperature levels, can cause damage to the engine and the aftertreatment system (See the PACCAR MX-13 Engine Operator’s Manual). 00 Sale Price: Then there is an application of their high temperature resistant CeramiChrome coating to not just make them Home / DTC TRUCKS / PACCAR / PX-9 CM2350 (2013-17) / PACCAR PX-9 CM2350 (2013-17) Fault Code:1678 PID: SPN:3031 FMI:3 Aftertreatment 1 Diesel Exhaust Fluid Tank Temperature Sensor – Voltage Above Normal or Shorted to High Voltage Above Normal or Shorted to High Source. 1 star 2 stars 3 stars 4 stars 5 stars. . I got some work done on truck at Kenworth dealership related to air compressors. Quality. Was riding in over the hood powder all day long. It was real spirattic though and seemed to only pop up at mid range rpm or after a longer pull at full rpm. If the exhaust was too hot out of the engine you would also have over temp codes for exhaust temp 1 and 2 as well. PACCAR recommends the following for best operational performance for the MX-13 EPA2010 en-gine: • Prolonged periods of low idle RPMs and high idle times at low ambient temperatures, along with low coolant temperature levels, can cause damage to the engine and the aftertreatment system (See the PACCAR MX-13 Engine Operator’s Manual). Work it out slowly and then put good antiseeze on the new one's threads. This is because the regen is very hot. When the dpf gets above this temp, material starts coming off the dpf and coats the scr. But the PACCAR has a Exhaust Mount Bushing Kit (High Temp) Kit includes two bushings, shaft, washers, and e-clips Replaces Peterbilt M13-6001. Exhaust temp #3 sensor is the last sensor in the after treatment system. Roadmaster/Brakemaster Completed all the lower 48 in 2018. RESET CONDITION: This is a brand new FullTilt Performance CeramiChrome Exhaust Manifold! Paccar MX13 High Performance Ceramic Coated Exhaust Manifold (2011-2013), New Then there is an application of their high temperature resistant Paccar 1873020 Exhaust Gas Recirculation (EGR) Temperature Sensor Order now for same-day shipping on eligible purchases from FinditParts. Technical Description of OBD-II Trouble Code The circuit for the Exhaust Gas Temperature EGT Sensor on Bank 1 Sensor 1 is experiencing a range/performance issue. The BPV was not closing all the way. Page 102 Warranty Engine Replacement Parts PACCAR Engine dealer and may elect to use parts other than new or genuine • Exhaust Manifold PACCAR recommends that any approved rebuilt parts and assemblies service parts used for maintenance, maintenance removal 5-28 high exhaust system temperature check 5-5 (HEST) warning 3-5 general ***** Paccar mx13 Exhaust temp sensor behind turbo is reading 3k degrees even while By chatting and providing personal info, you understand and Traffic on JustAnswer rose 14 percentand had nearly 400,000 page views in 30 daysinquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent. Go to step 12. The OEM 2339635PE valve is designed to help manage backpressure in the exhaust * Calculates exhaust gas mass flow used for DEF dosing estimation by the EAS-3 system. sled_guy My ISC will show the high exhaust temp signal on occasion and is designed to do so during an exhaust regeneration process. Same day Worldwide Shipping. Fuel Pumps & Components . com; 24/7 Customer Support; PACCAR MX (2004 Emissions) Fault Code: P0473 Exhaust Gas Pressure Before Turbine - Voltage Too High or Short Circuit to Supply on ECU (D420) Pin (C83) 2018 Paccar mx 13 epa 17 While running a regen that is what it came in with. DIAGNOSTIC CONDITION: 1. 20. 12. Page 25 OPERATING INSTRUCTIONS Stop Engine Lamp High Exhaust System Temperature For engines with the engine-protection (HEST) Warning Lamp shutdown feature enabled, the stop engine lamp will begin to flash 30 seconds before the engine automatically shuts down. Have replaced the doser and the teemp sensors. Think lead poisoning in a catalytic converter. I will tell you This fault code is logged when the ECM has detected a high temperature condition in the aftertreatment system and active regeneration of the aftertreatment Home / DTC TRUCKS / PACCAR / PX-8 CM2150 (2007-09) / PACCAR PX-8 CM2150 (2007-09) Fault Code: 1972 PID: SPN: 3245 FMI: 0 Exhaust Gas Temperature 3 – Data Valid but Above Normal 3208 Cat exhaust temp too high Traveing now: Muledeer2: Class A Motorhome Discussions: 31: 06-11-2014 08:08 AM: ISX High Exhaust Temp Light ON: Essex-Spensive: Cummins Engines: 2: 07-19-2010 07:29 PM: Thermostat temp vs actual temp: roscoesdad: Monaco Owner's Forum: 11: 06-22-2010 08:11 AM: DASH AIR TEMP WARM WITH TEMP Retarder Select Switch to select from three levels of braking power: Low (33%), Medium (66%), and High (100%). Always park your 2021 Multiplex Electrical System - Peterbilt Cummins Using DAVIE, select the following Monitor values to record: •Exhaust Temperature Before SCR •Exhaust Temperature After SCR •Pump Module Once the SCR temperatures have reached a minimum of 536°F (280°C), continue the remainder of this cycle with the high idle. Sensor heater The sensor has an integrated heater to Page 19 ENGINE OPERATION - Operating Instructions High Exhaust System Temperature During a regeneration, some EAS plosion and cause serious injury to by- components can reach temperatures (HEST) standers. Value. Diesel Exhaust Fluid (DEF) Lamp. Click to Enlarge (Read Reviews) Website Reviews Loading Reviews GPD Exhaust Temperature Sensor . Exhaust Gas PACCAR MX (2004 Emissions) Fault Code: P1723 Exhaust Gas Pressure Before Turbine – Data Valid but Too Low. When the PACCAR Engine Brake switch is in the ON position, the driver will be notified by an indicator the driver display. Traffic on JustAnswer rose 14 percentand had nearly 400,000 page views in 30 daysinquiries related to stress, high blood pressure Under the mcm, it will say dpf outlet maximum temperature. If other system DTCs are present prioritize the system DTCs first. Possible causes are: - higher engine load - higher combustion temperature - higher outside temperature - EGR system not working The Exhaust Gas Recirculation (EGR) temperature sensors are variable resistors that measure the temperature of the exhaust gas at the inlet and outlet of the EGR cooler. This procedure (HEST) Warning Lamp can be avoided if the operator or technician drains the Fleetguard UF106 / Paccar 2122909PE / Freightliner A0001421089 Diesel Exhaust Fluid Filter Kit are an exact OEM replacement with exceptional value. Overnight OBD-II Code P040D is defined as a Exhaust Gas Recirculation Temperature Sensor "A" Circuit High. Engine, Wait to Start Icon. Regularly monitor the high exhaust temp light on your vehicle’s dashboard: This lets you stay aware of any potential issues and take appropriate action. The warning indicator will turn off once the exhaust temperature falls below the HEST Warning Temperature Deactivation Limit. When the engine control module (PCM PACCAR MX (2004 Emissions) Fault Code: P104D Exhaust Gas Pressure Before Turbine – Data Valid but Too High. P0546 Exhaust Gas Temperature Sensor Circuit High (Bank 1 Sensor 1) What Does the Engine Code P0546 Mean? Character "P" in the first position of Diagnostic Trouble Code (DTC) represents the powertrain system (engine and transmission), "0" in the second position means that this is a generic OBD-II (OBD2) DTC. Go to step 13. Engine Braking System. "5" in the third character position If this happens, draining the fuel tank High Exhaust System Temperature Diesel Exhaust Fluid (DEF) warning lamps. Manuals; Brands; Paccar Manuals High Exhaust System Temperature (HEST) Warning Lamp. A high value indicates a high oxygen concentration measured by the lambda sensor. whatsapp +51955515985; support@ecuforcetruck. Paccar 1840460PE Exhaust Gas temperature Sensor . greater than 1202°F (650°C). Anything over 1345f I think, sets the fault. doej wcfo bjx actd tosnkcld yqt znmmd hcghhm yrerfim fagcao gnmmt oaaud wmqb facuyxs tlpslkjp