P11cb code duramax

Guided Diagnostics for SCR efficiency or NOx sensor fault codes will often result in No Fault Found. This often leads to replacement of one or both sensors despite no indication from diagnostic steps to do so. NOx sensor function is a possible cause, and is listed as such for the code description in the DTC description in Premium Tech Tool ( PTT ).

P11cb code duramax. U029D00 - Lost communication with NOX sensor A. U029D. U029D00 - Communication with nox sensor has a malfunction. U029D - Fault in Communication with the DeNOX system. U029D-00. U100600 - NOx sensor 1 Bank 1 - No Communication. 28992 U029E00 Communication missing incorrect. 053302 - NOx Sensor 1 Bank 2. U1036-000 U1036000 …

The mechanic will use the OBD-II scanner to retrieve the freeze frame data to find out what the condition of the vehicle was when trouble code P0191 was set by the power control module (PCM). Completes a test drive and uses the live data to determine whether the fuel pressure reading is normal. Uses a fuel pressure tester to make a ...

Equipped with the 6.6 Duramax Diesel Engine (RPO codes LML and LGH) This PI was superseded to remove pictures. Please discard PIP5085B. The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI. Condition/Concern Some customers may comment that the malfunction indicator lamp (MIL) is illuminated.Oct 13, 2021 · New 2015 Chev Duramax LML Tungsten Metallic 6" Procomp lift, Bushwacker fender flares, Blacked out Bowties, 35X12.50X18 Toyo R/T's, Rhino Lined bed. Huskey floor liners. So far Sold 04.5 Chev Duramax LLY 8" fabtech lift 37X13.50x18 Toyo Open Country M/T tires Edge w/ attitude rocker panels nerf bars huskey floor mats tinted glass, cognito braces, Dual Fabtech Stabilizers, Carbon fiber ... Im working on a 2013 Silverado 2500HD Duramax Diesel in my shop. Customer recently noticed a check engine light. After conecting my scan tool the code regestered was a P11CB or Manufacturer Specific c … read more Aug 11, 2020 · Thank you for holding Mark, The code P11CB on your 2015 Duramax usually sets in most cases due to a failing (NOx) sensor 1 and if you just looking to replace it without testing it to be sure it has, in fact, failed then all you would need to do is replace it and clear the code and that should do it as long as it was just a bad sensor which is likely. P11DB Code Duramax Engines: Meaning, Causes, and How to Fix 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.

Labor: 1.0. To diagnose the P11DB code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.This exhaust gas mixes with the intake air and cools the combustion process. The recirculated exhaust gas also prevents the formation of nitrogen oxides (NOx). The Diagnostic Trouble Code (DTC) will be set when the ECM detects that the actual EGR flow is lower than a calibrated value for greater than 5 s. P140C Code - Exhaust Gas …Code P11CB GMC Description. The Powertrain Control Module monitors the Nox Sensor 1. The PCM sets the OBDII code when the Nox Sensor 1 is not to factory …Labor: 1.0. The cost to diagnose the P140C GMC code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour. Search for P140C GMC Questions and Answers: Search here →.Code-switching involves not only shifting the way we speak, but also the the way you behave and express yourself. There are many reasons you may do it. If you speak multiple languages or dialects, code-switching may be a normal part of your...Nov 12, 2022 · 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 wiring ... 1,324 satisfied customers. I have a 2012 2500hd 6.6 duramax and I got a check engine. I have a 2012 2500hd 6.6 duramax and I got a check engine light with codes p2200, p2201, p2202, p2203, p11cb, and a trailer brake service … read more.AE L12 Discussion starter · Nov 3, 2021. 2016 LML GMC 2500. 6.6L: Code P01F0: coolant temp dropped below diagnostic monitoring temperature. Replaced Engine Coolant Temp sensor and cleared the code. Check engine light came back after sitting over night and warmed up before heading to work.

4,602 satisfied customers. 2015 Duramax 6.6, getting 2 codes for the EGR bypass valve. 2015 Duramax 6.6, getting 2 codes for the EGR bypass valve. Looking for diag & repair info for these two codes. P2493 & P24C4, also have a P0101 … read more.AE L12 Discussion starter · Nov 3, 2021. 2016 LML GMC 2500. 6.6L: Code P01F0: coolant temp dropped below diagnostic monitoring temperature. Replaced Engine Coolant Temp sensor and cleared the code. Check engine light came back after sitting over night and warmed up before heading to work.Jan 8, 2018 · P11CB: Component / System: NOx Sensor Performance - Signal High Bank 1 Sensor 1. Monitor Strategy Description: Detects a high deviation of the measured NOx sensor concentration from the modeled NOx concentration. The 3 images are all for P11DC, splice them if needed to read the details. 3. 2010 GMC Sierra LMM Duramax. Exhaust and tuned. 05-06-2021 #7. putergod. View Profile ... (permanent) codes are below. Any general thoughts on using HP to diagnose & fix this? No interest in removing/defeating emissions system. P0101 - permanent P11CB - history mil NOX 11 611ppm NOX 12 149ppm 12-22-2022 #20. …

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Common problems with Duramax diesel engines include air in the fuel lines, fuel starvation, water pump failure, overheating, injector failure and harness chafing. Some of these issues are preventable with certain modifications.17,890 Satisfied Customers. owner/mechanic at 3D Automotive. david craig is online now. Related Chevy Questions. 2015 Chevy 2500 HD 2015 Duramax. 85000 miles, P11CB keeps. 85000 miles, P11CB keeps randomly setting, NOx sensor 1 has been replace, EGR valve has been replace, been to dealer multiple time for this … read more. 1 Answer 0 votes answered Jun 24, 2018 by Reynaldo (12.8k points) P0101 MAF sensor performance P11CB Nox Sensor 1 performance signal high P140C Exhaust gas recirculation (slow response) The correction for these code is to start with the MAF sensor, A faulty MAF will set a P11CB and P140C..My 2012 Duramax has two trouble codes P11CB and P0101, I haven't noticed any problems with performance or starting. I have installed a fresh air intake a few months ago, what are these codes for? Vehicle: 2012 Chev 2500 Duramax. p11cb.I have a 2012 Silverado 2500hd with the 6.6 duramax. A check engine light popped on so I stuck a code reader on it and it read codes p2200, p2201, p2202, p2203, p11cb, and a trailer brake service light. I'm also getting a warning saying in 40 miles my max speed will be reduced

Save. Ramblinrodney · #8 · Mar 6, 2015 (Edited) Found this. 2013 gmc, 16,370 miles, cel on with P21dd code and is currently at dealership for def heater element replacement. Vehicle has been there since April 1st and waiting for part to show up the week of the 14th from gm.2010 Gmc 2500 Duramax 853,500 Odometer miles - sold Nov 2018 2013 LT CCSB SRW bought with 508,000 miles, now over 703,000 miles 2013 CrewCab and chassis with 9' Hillsboro aluminum flatbed 84,000 miles.6.5L Diesel Engine Duramax First Generation: 2001-2004 (LB7) Duramax Second Generation: 2004.5-2005 (LLY) Closed / Archived Marketplace Ads 6.2L Diesel Engine Top Contributors this Month View AllP01F0 code 2015 Duramax, I've cleared the code multiple times. Chevy 2500 4X4, Just clearing the code with my code - Answered by a verified GMC MechanicIf it's less, then your probably choking the engines airflow, if it's over 45 then it's to much airflow both will cause the P0101. I'm running a aFe proguard 7, when its been cleaned and oiled my MAF g/s is 40-43 if it gets to 45 I'll get the code. These numbers are at idle.Code P11CB GMC Description. The Powertrain Control Module monitors the Nox Sensor 1. The PCM sets the OBDII code when the Nox Sensor 1 is not to factory …Save GMCustomerService · #3 · Apr 1, 2015 Red675 said: CE light came on over the weekend and pulled code P11CB. Appears to be related to the NOX sensor. Light went off this morning after approx. 5 drive cycles. My question is: I'm getting ready to delete, is it worth taking it to the dealer to get fixed or just let it be?Go to Duramax r/Duramax • Posted by ... r/Duramax • p11cb codes on a 2015. r/Duramax ...Replacing NOX #2 sensor - 2013 Duramax. I gave the dealership $800 already to replace a bad indirect injector because it went in to limp mode due to a bad indirect injector. After driving it around for about 15 miles or so the check engine light came back on. This time it said the def quality is poor and went back in to limp mode.

The code is p16ab. It is a 2015 Chevy 2500HD duramax if that helps. I got this and replaced my intake heater, seems to have gone away. however i dont know thats its been cold enough for it to come back yet. Yes we believe we figured the problem out.

2018 Silverado position #1 NOX Sensor replacement, code P11DB and code P249DCheck out my Amazon store herehttps://www.amazon.com/shop/cfarmer?ref_=cm_sw_r_ap...Jan 11, 2023 · 2010 Gmc 2500 Duramax 853,500 Odometer miles - sold Nov 2018 2013 LT CCSB SRW bought with 508,000 miles, now over 703,000 miles 2013 CrewCab and chassis with 9' Hillsboro aluminum flatbed 84,000 miles. Sep 4, 2018 · P0420 Catalyst System Low Efficiency. Similar to P24A0 Diagnosis. This code commonly sets due to a Hydrocarbon Injector failure. Check EGT sensors first, see P24A0. 1) Perform the regeneration and note the exhaust temperature sensor #2 to be over 1000 degrees with temperature sensor #1 more than 600 degrees. U029D00 - Lost communication with NOX sensor A. U029D. U029D00 - Communication with nox sensor has a malfunction. U029D - Fault in Communication with the DeNOX system. U029D-00. U100600 - NOx sensor 1 Bank 1 - No Communication. 28992 U029E00 Communication missing incorrect. 053302 - NOx Sensor 1 Bank 2. U1036-000 U1036000 …P11DC code. Hey all- New to me 2019, 3500 L5P - 40k miles - I,ve only put about 170 miles on truck since I bought it a few weeks back. The other day I was getting on the highway entrance ramp & engine seemed like it stumbled a little & I see the check engine light set. I was close to AZ so they check code -P11dc, # 2 position nox sensor.This will fix check engine light code P11DBACDelco 12671387 GM Original... https://www.amazon.co... Replacement of nitrogen oxide sensor bank 1 upstream sensor. This will fix check engine light ...The DTC is unique to the control module which is not communicating and one or more control modules may set the same exact code. A loss of serial data communications DTC does not represent a failure of the control modules that contain the stored code. Conditions for Running the DTC. The system voltage is between 9–16 V.Open the hood after turning off the engine and removing the ignition key from its switch.I have a P2263 code that keeps popping up in a 2015 3500 chevy 6.6 duramax. Brand new block engine and turbo. Old engine - Answered by a verified GMC MechanicI am looking for P11cb help too. I have a 2015 Lml and I replaced nox sensor 1 and tested harness wiring and still code keeps coming back. When my buddy scanned it and watched live data it was showing the inductance was out of range. So I’m not sure if that means I should do a boost leak test.

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Seen it plenty of times for a p0420. If this dealer can't figure this out they shouldn't be touching a duramax. Min spec is 16ml and they are usually 15 to 18 when p0420 and I suspect that injector is bad. Only see one over fuel and melt the doc. 95% of the time it's not enough.I have a 2012 2500hd 6.6 duramax and I got a check engine light with codes p2200, p2201, p2202, p2203, p11cb, and a trailer brake service warning all at once. I also have a warning saying 43 miles unt …Jul 5, 2018 - GM OBD I Trouble Code Chart ; Code 15, Engine coolant temp sensor error (low temp indicated) ; Code 16, System voltage too low ; Code 17, …Regardless, P0420 is related to HC (hydrocarbon (diesel)) conversion rate not a DEF problem. As wiilydmax indicated, there is likely some problem with the 9th injector (regen injector) not spraying correctly, so the fuel isn't being converted to enough heat to get the regen done. See more. Reply. Save.Regardless, P0420 is related to HC (hydrocarbon (diesel)) conversion rate not a DEF problem. As wiilydmax indicated, there is likely some problem with the 9th injector (regen injector) not spraying correctly, so the fuel isn't being converted to enough heat to get the regen done. See more. Reply. Save.This video goes over how to replace the EGR valve and EGR cooler on a Chevy Silverado 2500 6.6L.Approximate Time: 7 HoursTools needed: 12mm Socket short and ...Nov 11, 2014 · P11CB or P11CC. * DTCs P0101, P0234, P0299, P0401, P0402, P140B, P140C, P2228, or P2229 are not set. * The DPF Regeneration is not active. * The BARO is between 75-106 kPa (11-15 psi). * The ambient air temperature is between -7 to +38°C (19-100°F). * The engine run time is greater than 30 s. * The engine coolant temperature is between -7 to ... P0420 Catalyst System Low Efficiency. Similar to P24A0 Diagnosis. This code commonly sets due to a Hydrocarbon Injector failure. Check EGT sensors first, see P24A0. 1) Perform the regeneration and note the exhaust temperature sensor #2 to be over 1000 degrees with temperature sensor #1 more than 600 degrees.P21AB, P21B0, P203D,P205B, P11CB. 2013 duramax. 115000. New def heater installed 1 year ago - Answered by a verified Chevy Mechanic. We use cookies to give you the best possible experience on our website. ... 2011 GMC 3500 Duramax, getting code P204B, Reductant system, Performance Bani 1.P11DC code. Hey all- New to me 2019, 3500 L5P - 40k miles - I,ve only put about 170 miles on truck since I bought it a few weeks back. The other day I was getting on the highway entrance ramp & engine seemed like it stumbled a little & I see the check engine light set. I was close to AZ so they check code -P11dc, # 2 position nox sensor.There are thousands of existing codes that are updated each October. The current version is CPT 2018. But with thousands of codes out there at any given time, how can medical professionals find the specific one they need?P11CB Duramax — Hi, I have a 2013 Duramax thats throwing a P11CB, pervious shop replaced both inlet and outlet NOx sensors, and DEF heater, light still coming on. brought the truck here, and I checked a few things so far, could not pinpoint the problem, any help will be greatly appreciated. I done the sensor reset and regen. ….

Regardless, P0420 is related to HC (hydrocarbon (diesel)) conversion rate not a DEF problem. As wiilydmax indicated, there is likely some problem with the 9th injector (regen injector) not spraying correctly, so the fuel isn't being converted to enough heat to get the regen done. See more. Reply. Save.The Fuel Temperature Sensor is hard to see. It is on the top of the motor, more to the rear (closer to the fire wal)l, and more on the left side (drivers side). You will see a blue, 3" dia. hose (charged air), the sensor is below that hose. 1998 GMC sierra 6.5L duramax has code P0238.Oct 19, 2015 · Chris_H Lifetime Premium · #4 · Nov 23, 2015. I have a 2013 Sierra 2500HD. I just bought it with 125,000 miles on it, and it threw the P21DD code as well. It was about 28F this morning. Went to Autozone to get the code read, because turning around to return home wasn't as convenient. The heater doesn't look too bad to replace, H&S has DEF ... Labor: 1.0. To diagnose the P11CB code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.This video is a run through of how to diagnose a bad nox sensor on an LML duramaxDTC P0108: Manifold Absolute Pressure (MAP) Sensor Circuit High Voltage. DTC P0299: Turbocharger Engine Underboost. DTC P2263: Turbocharger Boost System Performance. This condition may be caused by intermittent conditions and poor connections in the MAP sensor connector wiring harness terminal crimps.This exhaust gas mixes with the intake air and cools the combustion process. The recirculated exhaust gas also prevents the formation of nitrogen oxides (NOx). The Diagnostic Trouble Code (DTC) will be set when the ECM detects that the actual EGR flow is lower than a calibrated value for greater than 5 s. P140C Code - Exhaust Gas …Common problems with Duramax diesel engines include air in the fuel lines, fuel starvation, water pump failure, overheating, injector failure and harness chafing. Some of these issues are preventable with certain modifications. P11cb code duramax, John C. December 13, 2020. The Chevy DuRamax code p140c is for exhaust gas recirculation slow response decreasing flow. The importance of the EGR valve cannot be understated. The exhaust gas recirculation (EGR) is an effective strategy to control NOx emissions from diesel engines. The EGR reduces NOx through lowering the oxygen concentration in ..., I have a 2012 2500hd 6.6 duramax and I got a check engine light with codes p2200, p2201, p2202, p2203, p11cb, ... 2015 duramax is showing a P11CB code, my understanding its a downstream nox sensor. my question is can i replace …, dtc p11cb solved. This code does not show up on any list i have found. My dealership confirmed it was the code for a NOx sensor. Hope this helps someone out now or in the future. 2012 Chevy Silverado 2500 HD LT, CC/SB, 4x4, 6.6L Dmax LML w/Allison. BONE STOCK. With Edge Insight monitor. Remote start. 80 gallon ATTA tank., Learn the difference between source code and object code within computer programming. Each term has its own use; deciphering them can be difficult at first, but with this easy-to-follow guide, you will better understand the difference. Trus..., Labor: 1.0. To diagnose the P128E GMC code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour., P0420 and P11CB. To me, sounds like my truck needs weight reduction procedure. Would that ‘fix’ the P11CB nox sensor? What is the purpose of the nox sensor? Background: 2016 LML 3500, first duramax and I always try DIY before dropping big bucks at a dealer. , I have a 2012 2500hd 6.6 duramax and I got a check engine light with codes p2200, p2201, p2202, p2203, p11cb, and a trailer brake service warning all at once. I also have a warning saying 43 miles unt …, I threw a P11CB this morning. Looks like it is 1 of my 2 NOx sensors. I searched the DTC, but did not find too much info on recent posts. My questions are: 1) …, Save. rickmo301 · #4 · Apr 4, 2014. 3000 miles and codes already. I have a 2014 chevy 2500 3000 miles on it with duramaxtuner tuning running the sport econ tune. everytime it lugs on a long hill and builds boost (1600-1700 rpm and 17psi) it throws the p2263 code I clear it and it is fine... did this 4 times now twice with tow haul and small ..., This document provides information on diesel exhaust fluid (DEF) and the diesel particulate filter (DPF) for 2014 Chevrolet Silverado and GMC Sierra vehicles equipped with a 6.6L Duramax diesel engine. It explains the warning messages, the service procedures, and the diagnostic instructions related to these systems. It also includes some frequently asked questions and answers about DEF and DPF. , There were other codes for the glow plug circuits, but I only concentrated on the main code (U0106 -lost communication with glow plug control module). I used my Snap On Solus Pro scanner and was able to check the code and operation of the control module. There was no response from the controller., Chevrolet Silverado (Mass Air Flow Sensor) MAF is becoming the most common issues on vehicles now and days., Jun 29, 2023 · Check engine light, code P11CB, shop installed SL-N-Sensor, replaced NOx sensor 1 (1st time replacing sensor 1) 6/10/2020 - First time at new shop, the dealership I had been going to basically gave up on trying to determine the root cause after I was left in limp mode twice (gave it back to me and said "let us know when you get stranded again ... , 17,890 Satisfied Customers. owner/mechanic at 3D Automotive. david craig is online now. Related Chevy Questions. 2015 Chevy 2500 HD 2015 Duramax. 85000 miles, P11CB keeps. 85000 miles, P11CB keeps randomly setting, NOx sensor 1 has been replace, EGR valve has been replace, been to dealer multiple time for this … read more., To diagnose the P11CB Chevrolet code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour., 2003 2500hd duramax 6.6 turbo diesel crewcab 8ft box 4x4. 2014 sierra 2500hd duramax 6.6 turbo diesel 4x4 ... burning the soot (particulates) from the filter. Running out of DEF is definitely not good, but not why you have this code. Some trucks have extended coverage, I suggest taking to a dealer to find out. 2011 Silverado 1500 …, Jan 21, 2019 · I have a 2012 2500hd 6.6 duramax and I got a check engine light with codes p2200, p2201, p2202, p2203, p11cb, and a trailer brake service warning all at once. I also have a warning saying 43 miles unt … , Sep 6, 2016 · DTC P11CB LML: Jump to Latest Follow 25467 Views 9 Replies 4 Participants Last post by willydmax , Sep 7, 2016 Silver Bullet Discussion starter · Sep 6, 2016 I threw a P11CB this morning. Looks like it is 1 of my 2 NOx sensors. I searched the DTC, but did not find too much info on recent posts. My questions are: , , New 2015 Chev Duramax LML Tungsten Metallic 6" Procomp lift, Bushwacker fender flares, Blacked out Bowties, 35X12.50X18 Toyo R/T's, Rhino Lined bed. Huskey floor liners. So far Sold 04.5 Chev Duramax LLY 8" fabtech lift 37X13.50x18 Toyo Open Country M/T tires Edge w/ attitude rocker panels nerf bars huskey floor mats tinted glass, cognito braces, Dual Fabtech Stabilizers, Carbon fiber ..., 2010 GMC Sierra LMM Duramax. Exhaust and tuned. 05-06-2021 #7. putergod. View Profile ... (permanent) codes are below. Any general thoughts on using HP to diagnose & fix this? No interest in removing/defeating emissions system. P0101 - permanent P11CB - history mil NOX 11 611ppm NOX 12 149ppm 12-22-2022 #20. …, Common problems with Duramax diesel engines include air in the fuel lines, fuel starvation, water pump failure, overheating, injector failure and harness chafing. Some of these issues are preventable with certain modifications., P11CB: Component / System: NOx Sensor Performance - Signal High Bank 1 Sensor 1. Monitor Strategy Description: Detects a high deviation of the measured NOx sensor concentration from the modeled NOx concentration. The 3 images are all for P11DC, splice them if needed to read the details. 3., 2017 Chevrolet 2500 L5P Duramax position 2/ downstream NOx sensor replacement 2018 2019 2019 when reading these sensors they should show a constant slowly ch..., 2014 chevy express 6.6 duramax box truck. I have codes p2459 DPF regen frequency p2510 engine controls ignition relay feedback performance p00f5 intake air humidity sensor circuit high voltage and p01 ..., Check engine light codes for 2013 GMC 2500 diesel- P140C and P11CB. This problem has been going on off and on for a year. The P140C and P11CB. I take it in, pay and later it comes back on. The local dealer wanted $900 to fix it last time, so I took it to another dealer in a different town and they fixed for $0., CE light came on over the weekend and pulled code P11CB. Appears to be related to the NOX sensor. Light went off this morning after approx. 5 drive cycles..., P11CB: Component / System: NOx Sensor Performance - Signal High Bank 1 Sensor 1. Monitor Strategy Description: Detects a high deviation of the measured NOx sensor concentration from the modeled NOx concentration. The 3 images are all for P11DC, splice them if needed to read the details. 3., Labor: 1.0. To diagnose the P11CB code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour., Aug 6, 2021 · P11cb code. 2013 3500 6.6 duramax 62000 miles. Faulty Nox Sensor 1. Nox Sensor 1 harness is open or shorted. Nox Sensor 1 circuit poor electrical connection. Intake System Leaks. Exhaust System Leaks. 1. Ignition ON, observe the DTC information with a scan tool. DTC UXXXX should not be set. , A common problem with high-mileage 2001-2010 Duramax trucks is that the fuel filter head assembly begins to develop air leaks. The engine’s CP3 high-pressure fuel pump is capable of drawing fuel from the tank without the aid of an external lift pump as long as the system remains primed., 1,324 satisfied customers. I have a 2012 2500hd 6.6 duramax and I got a check engine. I have a 2012 2500hd 6.6 duramax and I got a check engine light with codes p2200, p2201, p2202, p2203, p11cb, and a trailer brake service … read more., GMC OBD Codes P11CB and P22FA. I have a 2013 GMC HD2500 with 16,800 miles. The check engine light came on and scan tool showed codes above. I made sure fuel cap was tight and reset light. It came back on after reaching operating temperature.