L5p nox sensor

L5P FUEL RAIL PRESSURE SENSOR LOCATION. Bodine1479; Jul 17, 2021; 5 32K Jul 30, 2023. by artygarcia93. 1 1 of 4 Go to page. Go. 4. L5P TSB (service bulletins, recalls, updates) 2.2K posts 1.4M views Postings of Tech Service info for any New L5P engine issues. ...

The problem: in affected trucks, the 6.6L L5P V8 Duramax diesel engine may have a damaged nitrogen oxide sensor connector wire. The hazards: a nitrogen oxide sensor is used to monitor the...Jul 24, 2022 · Replaced nox sensor 1 and ran the system bay test. Test was aborted due to nox sensor 1 nox concentration too low. Just wondering if anyone has ran into this issue before and might have some insight for me. I have sensor 2 on the way just in case both the sensors were faulty, still waiting on the part. Thank you for any info. 4093 posts · Joined 2009. #2 · Jan 2, 2021. Most likely it is the MAF (Mass Air Flow) sensor, located between the air filter and turbo. Usually doesn't need much attention unless you are running an aftermarket oiled ail filter. Use only MAF cleaner if you decide to clean it!NEW L5P Duramax DPF Front Upstream NOx Sensor | 12673516, 12676705, 12718675 | 2017+ L5P Duramax 6.6L NEW L5P Duramax DPF Rear Downstream NOx Sensor | 12676706, 12718676, 12673517 | 2017-2019 GM Duramax 6.6LNEW L5P Duramax DPF Rear Downstream NOx Sensor | 12676706, 12718676, 12673517 | 2017-2019 GM Duramax 6.6L. Item #: 12676706. Price: $299.00. Sale: $199.95. Buy in monthly payments with Affirm on orders over $50. Learn more. Free Shipping.NEW 2020-2022 L5P Duramax DPF Front Upstream NOx Sensor part number 12708005, 12695881. This part features a one year warranty.

Also the same code. After reading forums I drained the def, replenished, replaced NOX sensor 2, did the cycles through Gretio, and cleared it. Code came back, looked at sensor reads and everything seemed normal, except for a couple of malfunctioned tests. Got the code to clear then was good for a few weeks. Code came back and tool to …Oct 13, 2019 ... My 2020 Duramax had less that 500 miles on it when the engine light came on. Took it in twice for the same code and it was recalibrated, ...The battle is heating up between Tesla and its Chinese challenger XPeng as the latter makes clearer its stance on the future of autonomous driving. Over the weekend, XPeng, which c...Apr 9, 2013 ... ... nox sensor recall and I thought to myself but I'm deleted. Isn't that sensor on the exhaust? cuz I'm straight piped And how do you replace a .....There are two NOx sensors in an HD truck’s aftertreatment system, one on either side of the SCR. The inlet sensor measures the nitrogen oxide (NOx) levels in the exhaust before it passes through the SCR and reports this data to the ECU. Based on this, the ECU determines how much DEF the doser should inject into the exhaust gas.GM ought to include the DEF sensor on the L5P 6.6L Duramax on the 2017-2019 truck too. ... 3rd indirect injector (inside the DPF), replaced about 5 NOX sensors, 2nd EGR valve… List goes on ...L5P P0191 Code & Fuel Pressure Sensor Replacement. Wainer12; Sep 7, 2021; 37 ... Question: L5P Duramax NOX Sensor #1 and codes. Durob18; Dec 19, 2021; 6 ... (L5P) 6.3K posts 4.4M views Discuss the sixth generation of the 6.6L Duramax diesel engine & associated components. Engine related discussion ONLY.If a NOx Sensor Sensing or Current Performance (P1004, P11D5, P11DC, P22A7,P 22FE) and/or NOx catalyst efficiency DTC (P20EE, P249D, P249E, P2BAA) has set, can the issue be duplicated on an extended drive in which the P20EE OBD DTC successfully runs? Parts Information Description Part Number Qty NOX Sensor 1 12676705 1 NOX Sensor 2 12676706 1

By B R Oniango / November 12, 2022. The P11DB diagnostic trouble code is set when there is a problem with the nitrogen oxide (NOx) sensor. It indicates an issue with the NOx sensor current performance bank 1 sensor 1 in Chevrolet or GMC diesel vehicles. The possible causes of the P11DB code include a faulty NOx sensor, an open or shorted …Dec 21, 2018 · Parts of the Emissions Reduction System such as the emissions reduction fluid tank, injectors, sensors including NOX and exhaust, and the Exhaust Particulate Filter. Glow Plug Control System: Control/glow plug assembly, glow plugs, cold advance relay, and engine control module. The fuel injection control module, integral oil cooler ... Procedure to reset NOx learns: 1. Document any codes that are in the ECM. 2. Clear the codes in the ECM 3. Using GDS2, perform a NOx sensor 1 reset and a NOx sensor 2 reset. 4. Perform a Reductant System Malfunction Warning Service Bay test. • If the test passes, there is a high likelihood that the NOx sensors learned incorrectly in the new ...Dec 18, 2021 · #1 · Dec 18, 2021 (Edited) Hi guys, the check engine light appeared on my truck panel and I used the scanner and it showed this. Also I bought an original NOX sensor, I erased the code and replaced it but the problem continues. Someone with the same problem?, any answers will be appreciated. Thank you. 1. 2018 Chevy Silverado 2500 HD L5P.

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previous: 2021 LM2 CC std box 4x4 ; '18 2500 L5P CCSB 4x4; '11 LML, '10 LMM and 04.5 LLY. Save Share. Like. S. SouthFloridaGMC. ... "The NOx Sensor is on the way out when you drive it out of the lot" Save Share. Like. Show more replies. 0 Reply. Grasshopper101. 952 posts ...The U029E code is related to the reductant system in an automobile. The system uses two NOx sensors to monitor the amount of NOx in the engine’s exhaust gas. The second NOx sensor is located between the SCR and the DPF and monitors NOx levels downstream of the SCR. The ECM sets a DTC when a serial data message is received from the NOx sensor ...findthehumorinthings. #2 is easy to find. Look on the outside of the main truck frame on the passenger side about where the truck bed starts. You’ll see a heat sink bolted to the frame with a wire going toward the exhaust. Follow that wire. The heat sink is the NOx heater and the sensor screws into the body toward the back of the DPF.#1. We were driving down a steep grade using the exhaust brake yesterday and got a CEL. I used my Banks iDash to see that it is a P20EE code, which means, " …$238.57. - +. Add to Cart. WARNING: Cancer and Reproductive Harm - www.P65Warnings.Ca.Gov. NOx Sensor, Position 2, Downstream. Fits 2020-2022 …

To fix an oil sensor leak, locate the oil pressure sensor, remove the leaking sensor, and replace it with a new sensor. Replacement of the oil pressure sensor is the only way to fi...24. 14K views 3 years ago. 2017 Chevrolet 2500 L5P Duramax position 2/ downstream NOx sensor replacement 2018 2019 2019 when reading these sensors they should show a constant slowly changing...GM OEM L5P Nitrogen Oxide Sensor (NOx SENSOR) (Downstream) (2020-2023) (0) Reviews: Write first review. SKU: 12708006. Fits: 2020-2023 GM/Duramax Pricing: $191.00. Qty: Add to Cart Add ... GM Duramax - 2017-2024- L5P VIN Code Y - Emission System/Diesel After Treatment; Emission System/Diesel After Treatment; Shipping …- - L5P - Silverado 2500/3500 HD 2020 2021 GMC Sierra 2500/3500 2017 2019 Sierra 2500/3500 HD 2020 2021 Involved Region or Country North America and Israel ... reduction by looking at the NOx 1 and NOx 2 sensor readings. The ECM also looks at other sensors to predict what the NOx reduction should be. Certain things can influenceJul 20, 2021 · Bought a 2021 Chevy Silverado 3500 HD SRW, CC 4x4 with the L5P in April. Back to the dealer @ 3600mi with cel and code P20ee. They diagnosed with “ Nox sensor, false reading” reflashed the ECU and cleared the code. A week and 150mi later cel and same code (now reads as a permanent code). They’ve had it for a week now, got GM engineering ... Apr 8, 2021 · 2021 Chevy 3500 6.6 Duramax. 3900+ miles DEF Sensor engine code. Dealer had for over a week. 13000 miles NoX Sensor issue, have taken to dealer 3 times and still no fix. 1st time dealer had 1 week ... NorskeNY, when it checks the 'result' at sensor 2 and determines the NOx was not reduced as expected it then assumes the def is 'poor quality'. This is why a faulty sensor results in the poor def message. 2023 LZO CC std box 4x4. previous: 2021 LM2 CC std box 4x4 ; '18 2500 L5P CCSB 4x4; '11 LML, '10 LMM and 04.5 LLY.wanderer69 Discussion starter. 15 posts · Joined 2012. #1 · Apr 28, 2022. Have 2019 3500 Duramax with 73k on the mileage that I had a check engine light come on. Dropped it off at the Chevy dealer yesterday and they have notified me that it was a bad #1 Nox Sensor. Problem is they don't have it in stock and are on backorder with no date in stock.Chevy / GMC Duramax 2017+ L5P Forums. 2017-19 GM T-K2 Platform Powertrain HELP (Code P2ADA) 2017 L5P. Jump to Latest ... The NOx sensors incorporate an electric heater that is controlled by the NOx module to quickly bring the sensors to operating temperature. As moisture remaining in the exhaust pipe could …

GM OEM L5P Nitrogen Oxide Sensor (NOx SENSOR) (Upstream) (2020-2023) (0) Reviews: Write first review. SKU: 12708005. Fits: 2020-2023 GM/Duramax Pricing: $178.31. Qty: Add to Cart Add to Wishlist. Item Inquiry Tell a Friend. Description; Details; Shipping; Reviews; Description. OEM Replacement Upstream (Position 1) NOx sensor. This NOx …

2017 L5P nOX sensor removal. position 2. I'm at a loss. I have been trying for hours to remove this sensor. It wont budge. Seems to be some temp sensors right next to the sensor. Working around those sensors. Any help or reference to a video on how to get it removed would be great. 0. 1 Share.NOx Sensor, Position 1, Upstream Fits 2020-2022 Silverado/Sierra 2500HD/3500HD L5P Part# DMAX-8005 Replaces GM Part# 12708005 *Contact us for current lead times* OEM Replacement Upstream(Position 1) NOx sensor. This NOx sensor is located upstream in the downpipe. GM Replacement Part#12708005 Note: Reset procedure requiJan 22, 2022 · 1824 posts · Joined 2020. #5 · Jan 22, 2022. NOX sensor 2. It's going to be bolted to the passenger side frame rail in front of the rear tire.. Square silver box with wires going to the exhaust system.. I have a 2015.5 Chevy 3500 single rear wheels. In today’s rapidly advancing technological landscape, businesses and organizations are constantly seeking innovative ways to improve efficiency, productivity, and overall operation...NOx sensor 2. measures NOx levels exiting the SCR catalyst. The SCR assembly contains a catalyst brick that requires DEF, or diesel exhaust fluid, for activation. A PCM controlled pump and doser valve are used to meter DEF into the exhaust system upstream of the SCR brick. With the exhaust heat, the DEF will decompose into ammonia and carbon ...2021 Chevy 3500 6.6 Duramax. 3900+ miles DEF Sensor engine code. Dealer had for over a week. 13000 miles NoX Sensor issue, have taken to dealer 3 times and still no fix. 1st time dealer had 1 week ...According to a new report, Southwest is making changes to a sensor believed to have played a role in the Lion Air crash on some of its Boeing 737 MAX planes. In the wake of the Lio...ACDelco NOx (Nitrogen Oxide) Sensor - 12718742. Part #: 12718742. Line: ACD. Check Vehicle Fit. NOx (Nitrogen Oxide) Sensor Upstream. 2 Year LIMITED WARRANTY. Shop for the best NOx (Nitrogen Oxide) Sensor for your 2018 GMC Sierra 2500 HD, and you can place your order online and pick up for free at your local O'Reilly.L5P NOx Sensor, Upstream (2018-2019) $245.50 Availability: Call for Availability . Add to Wish List WARNING: Cancer and Reproductive Harm - p65warnings.ca.gov. Part#: DMAX-8742: Ask About This Item. Description Reviews. NOx Sensor, Position 1, Upstream. Fits 2018-2019 Silverado/Sierra 2500HD/3500HD L5P ... Diesel Particulate Filters DPF, Diesel Oxidation Catalysts DOC, Selective Catalytic Reduction SCR - Emission Sensors: NOX, EGT, O2, Particulate Matter, Pressure - Nitrous Oxide (NOx) Sensors; Chevy/GMC Duramax Parts - 2017+ Chevy/GMC Duramax L5P 6.6L Parts - Diesel Particulate Filters, DOCs, SCRs | 2017+ Chevy/GMC Duramax L5P 6.6L

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S&B MAP Sensor Spacer Installation for 2011-19 Ford 6.7L Powerstroke. Watch on. The amount of soot that builds up on the L5P MAP sensor is unreal. Our MAP Sensor Spacer keeps your sensor clean and one less thing to worry about.To fix the automobile fault code p11cc, follow these steps: 1. Check the possible causes mentioned above. 2. Visually inspect the wiring harness and connectors related to the fault code. 3. Look for any damaged components. 4. Check for broken, bent, pushed out, or corroded pins in the connectors.To fix the automobile fault code p11db, follow these steps: 1. Check the possible causes mentioned above. 2. Visually inspect the wiring harness and connectors related to the fault code. 3. Look for any damaged components. 4. Check for broken, bent, pushed out, or corroded pins in the connectors.NOX & O2 SENSORCleaningTemperature sensors are essential devices used in various industries to measure and monitor temperature changes accurately. They play a crucial role in ensuring the safety and effi... The automobile fault code P30B5 has an estimated repair time of 1.0 hour. The cost of fixing this fault code is influenced by the repair time. Most auto repair shops charge between $75 and $150 per hour for their services. Therefore, the fixing cost of P30B5 will be between $75 and $150, depending on the repair time required. GM ought to include the DEF sensor on the L5P 6.6L Duramax on the 2017-2019 truck too. ... 3rd indirect injector (inside the DPF), replaced about 5 NOX sensors, 2nd EGR valve… List goes on ...INFORMATION. This vehicle is equipped with a DEF Quality sensor that is integrated into the DEF tank. The value of this sensor can be read in the reductant data as the Reductant Concentration. If this concentration falls below 26%, the Exhaust Fluid Quality Poor message will be displayed on the DIC. The NOx Catalyst Reductant-Load Adaptive ... ….

The assembly uses two NOx sensors: the first sensor (referred to as NOx sensor 1) is located near the turbo downpipe and measures engine out NOx. The second sensor (referred to as NOx sensor 2) measures NOx levels exiting the SCR catalyst. The SCR assembly contains a catalyst brick that requires DEF, or diesel exhaust fluid, for activation.Don't forget to Like and Subscribe for more! - https://goo.gl/XtV9CJCheck out our Merch! - https://thedieseler.myteespring.co/O2/NOx Sensor Socket - https://...NOx Sensor, Position 2, Downstream Fits 2020-2022 Silverado/Sierra 2500HD/3500HD L5P Part# DMAX-8006 Replaces GM Part#12708006 *Contact us for current lead times* OEM Replacement Downstream(Position 2) NOx sensor. This NOx sensor is located downstream in the exhaust system. GM Replacement Part#12708006 Note: Reset procDuramax L5P Engine Problems. MAP Sensor Failure. Allison 1000 Transmission. Fuel Injector Failure (#4 Injector) Finding 3 problems with the L5P was difficult. While these engines are still relatively new, they seem to be extremely reliable so far with very few “common” problems that haven’t been solved or addressed.Steps for resetting Duramax NOx sensors. Step 1: Turn off the engine. This is crucial to ensure your safety while working on the sensors. Step 2: Disconnect the battery. This will prevent any electrical current from flowing through the sensors while you work on them. Step 3: Locate the NOx sensors.2017 L5P Duramax Code P026D. Jump to Latest Follow 41 - 60 of 68 Posts. 1 3 of 4 Go to page. Go. 4. M. Mmecsics · Registered. 2021 Denali HD ... Im with ya bud, 18 GMC with constant CEL and now the dreaded P289 code which is DEF quality, or a NOX sensor or some other unknown. Ive read where dealers throw a NOX sensor at it and …NOX & O2 SENSORCleaningDescription. GM OEM Nitrogen Oxide Sensor (NOx SENSOR). Downstream. Position 2. This NOx sensor is located Downstream in the exhaust. May We Suggest. GM OEM L5P Nitrogen Oxide Sensor (NOx … This video covers the first two modifications that you should perform if you have a L5P Duramax. 17-19 L5P DMAX TRANSMISSION COOLER THERMOSTAT BYPASS PLUGhtt... #1. Hey guys, I’m new here and I’m looking for info. I have a 2018 L5P and It has custom tuning and has for the last 2+ years and 25k+ miles, I was driving the other … L5p nox sensor, LML NOx Sensor, Downstream (2011-2014) NOx Sensor, Position 2, Downstream. Fits 2011-2014 Silverado/Sierra 2500HD/3500HD LML. Part# DMAX-1388. OEM Replacement Downstream (Position 2) NOx sensor. This NOx sensor is located in the exhaust system. GM Replacement Part#12671388., 22 posts · Joined 2020. #5 · Mar 16, 2021. After about a 45 minute wait in hold I did get through to a tech at Edge. He acted as surprised as I am to find out that the CTS3 does not have a PID that will display the NOx sensors’ values. This is a serious fail. OBD Fusion will show them and it is only costs a few bucks., Dec 15, 2021 ... I'm not sure if it would be worth a try but I have seen some aftermarket chicom sensors on eBay. When I saw them I was wondering how long it ..., This condition may be caused by a damaged NOx2 sensor, as shown in the graphic above. Correction If the sensor is found to be damaged, replace the NOx 2 sensor Service Procedure Refer to Nitrogen Oxides Sensor Replacement - Position 2in SI. Parts Information Causal Part Description Part Number Qty X SENSOR, NOX (POSN 2) 12695882 1, Mar 30, 2021 · I highly highly highly suggest cleaning your TMAP sensor as a part of your preventative maintenance program. My '18 has 18,300 on it and I was getting codes P0106 for "manifold absolute pressure" followed shortly there after by an unclearable P00C7. L5P TMAP sensor is both temp and pressure. , 17 posts · Joined 2019. #2 · Sep 28, 2022. Check all of the other NOX/EGT sensors and check for voltage at the plug, I lost bank EGT 1 and it read infinite with an ohm meter so I replaced. 2016 cc standard box GMC Sierra 2500HD 4x4 Iridium base stock. This is an older thread, you may not receive a response, and could be reviving an old thread., The battle is heating up between Tesla and its Chinese challenger XPeng as the latter makes clearer its stance on the future of autonomous driving. Over the weekend, XPeng, which c..., Fits 2017 Silverado/Sierra 2500HD/3500HD L5P. *Contact us for current lead times*. OEM Replacement Upstream (Position 1) NOx sensor. , Nox Player is a powerful Android emulator that allows users to run mobile apps and games on their computers. Whether you are a gamer looking to play your favorite mobile games on a..., Looking for info on the Duramax NOx sensor information and found this: Diesel NOx sensor technology | Search Autoparts. Like oxygen sensors, NOx sensors …, Duramax L5P Engine Problems. MAP Sensor Failure. Allison 1000 Transmission. Fuel Injector Failure (#4 Injector) Finding 3 problems with the L5P was difficult. While these engines are still relatively new, they seem to be extremely reliable so far with very few “common” problems that haven’t been solved or addressed., Dec 18, 2021 · #1 · Dec 18, 2021 (Edited) Hi guys, the check engine light appeared on my truck panel and I used the scanner and it showed this. Also I bought an original NOX sensor, I erased the code and replaced it but the problem continues. Someone with the same problem?, any answers will be appreciated. Thank you. 1. 2018 Chevy Silverado 2500 HD L5P. , Exhaust and tuned. From Google search (and learned something myself since i'm not familiar with tuning an L5P): "L5P Plugs will replace the nox and def module when the exhaust/def is removed from the L5P for racing. They will keep the CAN-BUS alive to the fuel tank and maintain normal ECU operation for fuel tank/lift pump data., S&B MAP Sensor Spacer Installation for 2011-19 Ford 6.7L Powerstroke. Watch on. The amount of soot that builds up on the L5P MAP sensor is unreal. Our MAP Sensor Spacer keeps your sensor clean and one less thing to worry about., P20EE: SCR NOx Catalyst Efficiency Below Threshold Bank 1. 2013 GMC Sierra Duramax with 100,000 miles. Went on vacation to Florida from East Texas pulling my 30 TT. All ran fine and pulled great. On the trip home on Friday the engine light came on and stayed on the whole trip. Once we got home and got unhooked and unloaded, the engine …, 2017 L5P Duramax Code P026D. For those folks who may have the check engine light come on and the following code comes up: P026D, I want to let you know that, for me, it was the MAP sensor being dirty. It has happened twice in the last few months, and I have been able to clear the code by cleaning the sensor., To fix the automobile fault code p11db, follow these steps: 1. Check the possible causes mentioned above. 2. Visually inspect the wiring harness and connectors related to the fault code. 3. Look for any damaged components. 4. Check for broken, bent, pushed out, or corroded pins in the connectors., doc898 Discussion starter. 1 post · Joined 2015. #1 · Nov 27, 2020. Hello, My brand new l5p has a nasty knock at idle. Dealer says it's normal, and that there is a bulletin on it. I have a really hard time believing that GM would consider this knock "normal". Switched from being a hard core Powerstroke guy, to the D-max a few years back, and ..., NEW L5P Duramax DPF Front Upstream NOx Sensor | 12708005, 12695881 | 2020-2022 GM Duramax 6.6L NEW L5P Duramax DPF Rear Downstream NOx Sensor | 12708006 | 2020-2022 GM Duramax 6.6L 17+ L5P 6.6L Duramax Diesel Particulate Filter (DPF) | 1 Year Warranty | 2017+ GMC / Chevy Duramax L5P 6.6L , Are you in search of the perfect Android emulator to run your favorite mobile apps and games on your computer? Look no further than Nox Player. With its powerful features and user-..., This video covers the first two modifications that you should perform if you have a L5P Duramax. 17-19 L5P DMAX TRANSMISSION COOLER THERMOSTAT BYPASS PLUGhtt..., In a previous video (link below) I detailed the service regeneration procedure. This video shows you the diesel particulate sensor (a.k.a. Particulate Matte..., When calibrating the ambient light sensor, ensure to maintain a stable ambient light environment (Ex: inside the garage). If the lighting changes as the calibration takes place, auto-dimming will change inconsistently and calibration will need to be performed again. ... April 6, 2018 Billy Bergman Comments Off on Derringer L5P Tuner for the ..., 2017 Duramax 6.6 L5P Nox Sensor Replacement - YouTube. Drews Shop Life. 1.89K subscribers. Subscribed. 76. 13K views 8 months ago. Replacing the rear nox sensor on a 2017 chevy silverado 2500..., Aug 17, 2013 · The block for the sensor at the back/top of the motor is on the LHS of the firewall. The block for the DPF sensor is frame mounted. They are about $380 each (in Canada). If you've still got warranty, u you might as well use it. 2023 LZO CC std box 4x4. previous: 2021 LM2 CC std box 4x4 ; '18 2500 L5P CCSB 4x4; '11 LML, '10 LMM and 04.5 LLY. , Ask the Diesel Experts. Email Us Get answers from the pros. 920-361-7700 Mon-Fri: 8am - 5pm (CST) Sat-Sun: Closed. Fits: 2020-2023 GM/Duramax., Diesel Particulate Filters DPF, Diesel Oxidation Catalysts DOC, Selective Catalytic Reduction SCR - Emission Sensors: NOX, EGT, O2, Particulate Matter, Pressure - Nitrous Oxide (NOx) Sensors; Chevy/GMC Duramax Parts - 2017+ Chevy/GMC Duramax L5P 6.6L Parts - Diesel Particulate Filters, DOCs, SCRs | 2017+ Chevy/GMC Duramax L5P 6.6L, Both those codes could be (and based on given the many, many repairs documented here probably are) caused by malfunctioning NOx sensor(s). 2023 LZO CC std box 4x4 previous: 2021 LM2 CC std box 4x4 ; '18 2500 L5P CCSB 4x4; '11 LML, '10 LMM and 04.5 LLY, The latest, being the U029E code which, per a web search, is a "Lost Communication With NOX Sensor B". The CE lamp also activates on the instr panel. Further, I am also getting intermittent displays of a DEF level failure that comes and goes (corresponding IP indicator sets & resets), which also displays 2 different messages related to "miles ..., Chevy / GMC Duramax 2017+ L5P Forums. 2017-19 GM T-K2 Platform Powertrain P20ee. Jump to Latest Follow ... They diagnosed it as a bad NOX Sensor and replaced #1 - at a cost of $737, now that I am off the extended warranty, at 122,000.(FYI...GM extended the warranty, at least on 2013's to 120,000 for emissions …, L5P DEF Injector and NOX Sensors. Hello, I have a stock 2018 L5P 140k miles and am getting code P20EE. I have replaced both nox sensors and def injector with no change in nox performance, reset sensors with snap on scanner. At highway speeds nox1 is usually around 200-300ppm and nox 2 is almost always higher, rarely even with 1 and sometimes as ..., Dasbecan 68210084AA Nox Nitrogen Oxide Upstream Sensor Compatible with Ram 2500 3500 4500 5500 6.7 2013-2018 Cummins 6.7L Replace# 904-6030 dummy ACDelco GM Original Equipment 12680215 Nitrogen Oxide Sensor, Mar 9, 2019 · 2017 Silverado, L5P w/81K miles. Starting to get code P20EE which suggests a "low catalyst efficiency". I can clear the code with my Edge and drive for a certain number of miles without the code reappearing- but, it eventually returns. I've seen some owners claim the #2 NOx sensor or the DEF injector may be the culprit.