The truck show lack of performance. Corroded or damaged vane sensor plug. Takes lots of time before boosting. Faulty turbocharger. Discharge black smoke before boosting. Defective vane control solenoid. Sticky turbo vanes. Engine power decreased. Let’s know p003a duramax code reasons and their solutions in detail.Pcscout Discussion starter · Jul 13, 2021. 2019 GMC 2500 6.6 / 55,000 Miles. Was on a road trip last night and got a DIC warning that I had 175 miles until I was limited to 65 mph. Stopped and put in 2.5 gallons of DEF. After driving another 75 miles or so and trying several on/off with the ignition it didn't reset, so I topped it off with ...Check engine light with p21dd and p20b9. Indicates problem with heater circuit in the def tank . Easy repair , fast diagnosis.I'm still stuck at 4 miles per hour limp mode. I have an Innova scanner but I can't clear the P20B9 code. Says permanent. ... Chevrolet 3500hd: 2011 duramax- I have a persistent leak at. 2011 duramax- I have a persistent leak at the joint where my turbo exhaust outlet mates to exhaust downpipe.This is a brand new complete replacement heater kit for Mazda CX7 diesel. XeMODeX replacement fixes diagnostic trouble code P20B9.From the service manual..... Cold Weather Operation reductant = DEF Fluid As reductant will freeze at temperatures below 0°C (32°F), there are 2 reductant heaters. Reductant heater 1 is in the reductant reservoir and reductant heater 2 is in the supply line to the reductant injector. The reductant control module monitors the reductant temperature …Common Problems That Trigger the P20B9 Code. Glow plug control module failure; Reductant tank heater failure; Wiring issue. More OBD-II Codes. P20B8.Feb 19, 2014 · 6.5L Diesel Engine Duramax First Generation: 2001-2004 (LB7) Duramax Second Generation: 2004.5-2005 (LLY) 6.2L Diesel Engine Suspension & Steering - 2001 - 2010 Top Contributors this Month View All The reductant heater 1 in my 2011 just took a crap with code P20B9 and I tried to bypass it with a 2.2ohm 1 watt metal film resistor. When commanding the the active test on all three heaters, the test for open circuit on heater one all of a sudden kept showing fail and would not clear.2011 duramax the exhaust light is blinking I filled the def tank still there. I have codes p0463, ... code P20B9, and a message to service the system. After changing the DEF heater in the tank, the check engine light is gone but now have a warning that says "175 miles to 65 ...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.For the Chevy Duramax Diesel, the code P20B9 indicates an issue with the DEF reservoir heater. More often than not, it will be the heater itself that must be replaced, and I show you how to do...May 5, 2015 · saw31526 Discussion starter · May 5, 2015. Few days ago, my Service Exhaust Fluid System message came on and not long after CEL with P20b9 code (Reduction heater a cap or somewhere along those lines). Cleared the code and drove with just the Service EFS message on with hope it might just clear itself. Scheduled an appointment after a few days ... Apr 15, 2018 · Find the large connector above the DEF tank. Actuate the lever and separate the connector. Measure the resistance of the reductant heaters. The pins are the large pins in the center of the connector. There are three pairs. If the circuit shows a high resistance, the heater needs replaced. Each heater is different. Mar 27, 2020 · Try commanding the DEF heaters on then off for 10 seconds each. Sometimes clearing the related code isn’t enough and the heaters have to be cycled to clear the latched message. 2011 Silverado 1500. GM automotive mechanic, with Duramax experience. Come join the discussion about duramax engines, performance, builds, modifications, classifieds, troubleshooting, maintenance, and more! Full Forum Listing. Explore Our Forums. 6.5L Diesel Engine Duramax First Generation: 2001-2004 (LB7) Duramax Second Generation: 2004.5-2005 (LLY) Closed / Archived Marketplace Ads …P2510 duramax code p20b9 DTC P is a Type A DTC. Conditions for Clearing the DTC DTC P is a Type A DTC. Special Tools J Relay Puller Pliers Circuit/System Verification. If any DTCs other than DTC P are set, diagnose those DTCs first. Refer to Diagnostic Trouble Code (DTC) List - Vehicle. See: Diagnostic…GMC DTC P20C1. Reductant Heater 3 Control Circuit. P20B9, P20BD, or P20C1 DTC P220B is not set. The DEF heater is commanded ON. The glow plug control module temperature is less than 123°C (254°F). The glow plug control module battery voltage is between 7-16 V. The DTCs run continuously once the above conditions are …Oct 2022 code P20B9 Reductant Heater A Control Circuit OPEN, kept driving it and code went away, returned twice in November, went away. Ordered tank heater kit and on shelf Dec 2022. Jan 2 2023 tank heater code returned and would not self correct. Replaced heater, cleared code and speed reduction self cleared after short drive. Tank 100% full ...Equipped with 6.6L Duramax™ Diesel Engine (RPO LGH and LML) Attention: This Bulletin also applies to any of the above models that may be Israel Export vehicles. ... Group 3: P20B9, P20BD, P20C1 Group 4: P242D, P2033, P2047, P208A, P20A0 2. 2012 Not Tamper Group 1: P20BC, P20C0. P20C4.Chevy / GMC 2500HD Duramax - P20B9-00 Reductant Heater Problem - Part II. South Main Auto Repair LLC. 811K subscribers. Subscribe. 6.7K. 193K views 7 years ago. NOTICE: After the first video...2013 chevy Silverado 2500hd 6.6 lml. Codes p204b, p20a0, and…. DTC P204B is a Type A DTC. The ECM inhibits the reductant system. The ECM commands the engine to operate in Reduced Engine Power mode. The driver information center may display the Engine Power Is Reduced message. Todd M and 87 other Chevy Specialists …NOTICE: After the first video played GM saw it and immediately took action to help the customer and take up matters with the dealer to resolve all the issues...12 août 2016 ... Code P20B9-00 While hitching up last weekend to return home, I started the truck (2012 Silverado 2500HD/Duramax LML) and immediately got ...The truck show lack of performance. Corroded or damaged vane sensor plug. Takes lots of time before boosting. Faulty turbocharger. Discharge black smoke before boosting. Defective vane control solenoid. Sticky turbo vanes. Engine power decreased. Let’s know p003a duramax code reasons and their solutions in detail.ford_doctor · #2 · Apr 16, 2016. Warren, both DTC's P20BD and P20BE are specific to the reductant line heater. Yes, the line going from the DEF tank to the injector on the exhaust filter is indeed heated. Since you are not reporting any glow plug system or tank heater DTC's we can hone right in on the line heater.P20B9, P204C, P208A, P208B, P208C, P203B, P205B, P21CD and/or U02A2 in the powertrain control module (PCM). This may be due to water intrusion within connectors C3613 and/or C4851/C3610 on the reductant harness going to the reductant pump/heater assembly and the reductant level sensor/quality module.Jun 2, 2022 · Replace/Repair These Parts To Fix Code P20B9. Temperature Sensor - Illumination of the check engine light and DPF light show that the temperature sensor is defective. Get rid of it as soon as possible. Diesel Exhaust Fluid - If the DEF is dirty, it can block the filter and can cause pressure and temperature differentials which affects the whole ... 2015 Chevy 3500 6.6 Duramax Diesel Reductant Tank Heater/Temperature Sensor Replacement Real Time 42:16 min 320 kbps 58.04 MB Downlod Now. P205B P205C .DEF Tank Temperature Sensor Bypass. Обманка для датчика температуры мочевины ... P20B9 Duramax - Full Repair Of DEF HeaterFeb 5, 2021 · Technician. Diploma. 7,750 satisfied customers. I just had a code P133A show up. Check engine light came on. Good Morning! I just had a code P133A show up. Check engine light came on this morning and that was the code. Is this something i need to be … read more. What Does the P20B9 Code Mean? As reductant will freeze at temperatures below -11°C (12°F), there are 2 reductant heaters located in the reductant tank. One heats the reductant in the tank, and one heats the reductant supplied to the reductant injector supply pipe. The Engine Control Module ( ECM) monitors the reductant temperature in the ... • P20B9: Reductant Heater 1 Control Circuit • P221E: Reductant Tank Heater 3 Low Current Some technicians may also find when commanding one of the heaters on, that there is no current, 0 amps in GDS2 or unable to command the heaters on. Cause This condition may be caused by a poor connection at the Emission Reduction Fluid Tank electrical ...After replacing the wiring harness on the Diesel Exhaust Fluid (DEF) tank on some 2020-2022 Silverado 2500HD/3500HD and Sierra 2500HD/3500HD trucks equipped with the 6.6L Duramax diesel engine (RPO L5P), several DTCs may set. DTCs P20B9 (Reductant Heater 1 Control Circuit) and P20C1 (Reductant Heater 3 Control Circuit) may be caused by a wiring ...1 fév. 2021 ... ... P20B9 which is a def heater issue. I decided to investigate the issue myself and repair the heater for that price. Long story short after I ...Common Problems That Trigger the P20B9 Code. Glow plug control module failure; Reductant tank heater failure; Wiring issue. More OBD-II Codes. P20B8.Apr 15, 2018 · Find the large connector above the DEF tank. Actuate the lever and separate the connector. Measure the resistance of the reductant heaters. The pins are the large pins in the center of the connector. There are three pairs. If the circuit shows a high resistance, the heater needs replaced. Each heater is different. Jun 30, 2017 · Code P20b9 shows up on the scanner. I'm 275 kms from home. So finished the trip, in limp mode and took it to the dealer who informed me that my extended warranty does not cover the DEF system PERIOD! P21DD & p20B9 The failed DEF tank heater has put the car in reduced power mode, dropping max speed at every 75 miles down to a max of 4mph. ... 2002 Duramax 2014 ...What Does the P20B9 Code Mean? As reductant will freeze at temperatures below -11°C (12°F), there are 2 reductant heaters located in the reductant tank. One heats the …After replacing the wiring harness on the Diesel Exhaust Fluid (DEF) tank on some 2020-2022 Silverado 2500HD/3500HD and Sierra 2500HD/3500HD trucks equipped with the 6.6L Duramax diesel engine (RPO L5P), several DTCs may set. DTCs P20B9 (Reductant Heater 1 Control Circuit) and P20C1 (Reductant Heater 3 Control Circuit) …07 duramax codes p0087, p0128, p0672, p0673, p0676, p0671 07 duramax cab & chassis, throwing codes; po087,po128, po672,po673,po676,po671...the main concern is the po087 code.trouble diagnosing the problem. w/o scan tool narrowed down to cp3 fuel pump/ or small outside chance of the rail pressure sensor faulty.truck has 135,200miles...; 2008 vw …Check the ECM thoroughly if the P2149 code comes on your car screen. Take an expert’s aid to replace the old ECM. Restore the Power Control Module PCM) Replacing an outdated PCM solves the P2149 code most of the time. Update the PCM software to resolve the code. Sometimes fixing the broken PCM module fixes the P2149 code. The reductant tank temperature sensor measures the amount and temperature of the reductant in the diesel exhaust aftertreatment system. It provides accurate readings for the powertrain control module (PCM). The PCM uses the data as a reference for any adjustments it has to make to various engine and exhaust processes.Lower vehicle and perform camshaft and. crankshaft timing relearn procedure as follows: ² Connect the DRB scan tool to the data link. (diagnostic) connector. This connector is located in. the passenger compartment; at the lower edge of. instrument panel; near the steering column. ² Turn the ignition switch on and access the “miscellaneous”.The code P20b9 on Duramax is a bit intimidating, especially if you’re reading it for the first time. No worries, the first thing you should look for is a clear understanding of what the code means on Duramax. In technical terms, the code P20b9 stands for “Reductant Heater “A” Control Circuit/Open”.What does OBD-II fault code P20B9 mean? Diesel Exhaust Fluid (DEF) is used to assist in converting leftover exhaust particles to harmless gases. In order to burn off those particles, the temperature of the exhaust system needs to increase. the injection of DEF Fluid into the exhaust stream brings Diesel Particulate Filter (DPF) up to temperature.DTC P02C1, P21DD, P221C, P10D9, P10F3, P143C, P20B9, and/or P221E Brand: Model: Model Year: VIN: Engine: Transmission: from to from to Cadillac Escalade Models 2021 2021 LM2 Chevrolet Silverado 1500 2020 LM2 Silverado 2500HD/3500HD 2020 L5P Suburban 2021 LM2 GMC Sierra 1500 2020 LM2 Sierra 2 500HD/3500HD 2020 L5P Yukon Models 2021 LM2 Involved ...The code p20b9 is still showing. also replaced the glow plugs. Level is - Answered by a verified Chevy Mechanic. We use cookies to give you the best possible experience on our website. ... 2014 duramax, message said poor def quality, power was reduced to 65 then 55. Dealer tested quality and OK.GMC 2011 3500HD Duramax DEF light on followed by engine check light, Fault codes P2047, P208A, P204C, P205D, U010E. all can be cleared and return at start up. Have removed DEF tank, cleaned system with water, checked wire harness continuity OK, New tank heater, New DEF injector to exhaust, New DEF fluid.P20B9. 737 Views 5 Replies 2 Participants Last post by SuperBlackTruck, ... Enjoy banner ad-free browsing with Chevy and GMC Duramax Diesel Forum Plus. Learn more. Chevy and GMC Duramax Diesel Forum. A forum community dedicated to Chevy and GMC Duramax diesel owners and enthusiasts. Come join the discussion about …If the P20BA code does return, we will need to test the heater and its associated circuits. Typically, there are 2 wires at the DEF Supply Line Heater. For this code, the easiest thing to do unplug the DEF Supply Line Heater connector. With the scan tool hooked up, see if code P20B9 DEF Supply Line Heater Circuit High Input is now active after ...2 sept. 2014 ... Equipped with 6.6L Duramax™ Diesel Engine (RPO LGH and LML) ... Tamper Group 4: P20B9, P20BB, P20BD, P20BF,. P20C1, P20C3. 2013-2015. Tamper.Faulty Reductant Heater Reductant Heater harness is open or shorted Reductant Heater circuit poor electrical connection Faulty Reductant Pump and Sensor …P20B9 GMC Information for specific makes. GMC Vehicle:GMC Acadia,GMC Canyon,GMC Envoy,GMC Savana 1500,GMC Savana 2500,GMC Savana 3500,GMC Sierra 1500,GMC Sierra 2500 HD,GMC Sierra 3500 HD,GMC Terrain,GMC Yukon,GMC Yukon XL 1500,GMC Yukon XL 2500, Categories Uncategorized Post navigation.2 sept. 2014 ... Equipped with 6.6L Duramax™ Diesel Engine (RPO LGH and LML) ... Tamper Group 4: P20B9, P20BB, P20BD, P20BF,. P20C1, P20C3. 2013-2015. Tamper.32,822 Satisfied Customers. GM Grand Master Technician 2007. 14 years experience. GM Tech (Cam) is online now. Related Chevy Questions. 2011 duramax the exhaust light is blinking I filled the def. 2011 duramax the exhaust light is blinking I filled the def tank still there. I have codes p0463, p20b9, p2205, p2420, and p2471 … read more.3 jui. 2017 ... For the Chevy Duramax Diesel, the code P20B9 indicates an issue with the DEF reservoir heater. More often than not, it will be the heater ...Diesel engines use the selective catalytic reduction method to reduce NOx emissions. This method is done by injecting diesel exhaust fluid (DEF) into the exhaust stream, triggering a chemical reaction that breaks down NOx into nitrogen and hydrogen. The DEF is stored in a tank where it’s kept warm by a reductant heater.Dec 6, 2004 · GMC DTC P20C1. Reductant Heater 3 Control Circuit. P20B9, P20BD, or P20C1 DTC P220B is not set. The DEF heater is commanded ON. The glow plug control module temperature is less than 123°C (254°F). The glow plug control module battery voltage is between 7-16 V. The DTCs run continuously once the above conditions are met. P20B9, P20BD, or P20C1. Nov 19, 2015 · Norskeole · #17 · Dec 14, 2015. Have had the code, P205B, come and go the past 2 weeks. Have a little over 48,000 miles on the truck. One time the truck remote start did not work (truck started and then stopped) - CEL light was on when I entered the truck. So I monitored the parameters with my Edge Insight CTS. saw31526 Discussion starter · May 5, 2015. Few days ago, my Service Exhaust Fluid System message came on and not long after CEL with P20b9 code (Reduction heater a cap or somewhere along those lines). Cleared the code and drove with just the Service EFS message on with hope it might just clear itself. Scheduled an …The reductant heater 1 in my 2011 just took a crap with code P20B9 and I tried to bypass it with a 2.2ohm 1 watt metal film resistor. When commanding the the active test on all three heaters, the test for open circuit on heater one all of a sudden kept showing fail and would not clear.Faulty Reductant Heater. Reductant Heater harness is open or shorted. Reductant Heater circuit poor electrical connection. Faulty Reductant Pump and Sensor Assembly. Faulty Reductant Control Module. ⚠ Does your Car have Safety Recalls? → Check here. How to Fix the DTC P20B9?May 10, 2014 · a have a 2011 duramax 3500 dually with code p20b9..anyone have any idea if there is a way around taking it to the dealer..i also have a 2001 with 270,000 very hard miles and was very pleased with truck bought a 2011 not so happpy As a foreword, I have been working 12-15 hours a day, 7 days a week since mid-december, so getting my truck to the dealership hasn't been possible until this week. I started getting the CEL and 65mph countdown this past winter. Scanner always showed two codes; P20BE, and B20BE (permanent). Reductant heater B performance.Labor: 1.0. The cost to diagnose the P21DD 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 P21DD Questions and Answers: Search here →.Code P20b9 shows up on the scanner. I'm 275 kms from home. So finished the trip, in limp mode and took it to the dealer who informed me that my extended warranty does not cover the DEF system PERIOD! And the repair will be minimum $1000, or they could do a single stage delete for $1500 which they said wouldn't affect the rest of my extended ...A stored code P205B means that the powertrain control module (PCM) has detected an abnormal degree of voltage in the reductant tank temperature sensor circuit. This code is exhibited in vehicles with a clean burning diesel engine, exclusively. The catalyst system is responsible for reduction of (basically) all exhaust emissions although certain ...P20B9 Reductant Heater Control Circuit Open. obd-codes.com. How to easily diagnose repair and info on causes of P20B9 trouble code that indicates detected open state in the reductant heater control circuitReplace/Repair These Parts To Fix Code P20B9. Temperature Sensor - Illumination of the check engine light and DPF light show that the temperature sensor is defective. Get rid of it as soon as possible. Diesel Exhaust Fluid - If the DEF is dirty, it can block the filter and can cause pressure and temperature differentials which affects the whole ...What Does Code P2463 Mean? OBD II fault code P2463 is a generic code that is defined as “Diesel Particulate Filter Restriction – Soot Accumulation”, and is set on all diesel applications when the PCM (Powertrain Control Module) detects an excessive accumulation of solid particulate matter (diesel soot) in the diesel particulate filter ...i have a 2014 duramax with 31,000 miles on it. THE CODE SHOWED UP , P20B9 ON MY WAY TO WORK, STATING 99 MILES TILL SPEED LIMITED TO 65 …P20B9. 737 Views 5 Replies 2 Participants Last post by SuperBlackTruck, ... Enjoy banner ad-free browsing with Chevy and GMC Duramax Diesel Forum Plus. Learn more.Chevy / GMC 2500HD Duramax - P20B9-00 Reductant Heater Problem - Part II. South Main Auto Repair LLC. 811K subscribers. Subscribe. 6.7K. 193K views 7 years ago. NOTICE: After the first video...Chevy / GMC 2500HD Duramax - P20B9-00 Reductant Heater Problem - Part II. South Main Auto Repair LLC. 811K subscribers. Subscribe. 6.7K. 193K views 7 years ago. NOTICE: After the first video...Apr 11, 2018 · 1 - 11 of 11 Posts. dougmac · #2 · Apr 12, 2018. If the pump module was replace, you need to perform the Tech-2 Reductant System Reset. Each one of the three DEF heaters needs to be commanded on for 10 seconds. 2013 Chevrolet 2500HD LTZ Z71. The reductant heater 1 in my 2011 just took a crap with code P20B9 and I tried to bypass it with a 2.2ohm 1 watt metal film resistor. When commanding the the …saw31526 Discussion starter · May 5, 2015. Few days ago, my Service Exhaust Fluid System message came on and not long after CEL with P20b9 code (Reduction heater a cap or somewhere along those lines). Cleared the code and drove with just the Service EFS message on with hope it might just clear itself. Scheduled an …Check engine light with p21dd and p20b9. Indicates problem with heater circuit in the def tank . Easy repair , fast diagnosis.2017 duramax l5p reductant pressure too low closed loop code. I have cleared but it’s stored permanently and light comes - Answered by a verified Chevy Mechanic. We use cookies to give you the best possible experience on our website. ... Chevy Truck 2500 6.6 Duramax, P20B9 Reductant Heater Control.
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P20B9 Reductant Heater Control Circuit Open. obd-codes.com. How to easily diagnose repair and info on causes of P20B9 trouble code that indicates detected open state in the reductant heater control circuitTry commanding the DEF heaters on then off for 10 seconds each. Sometimes clearing the related code isn’t enough and the heaters have to be cycled to clear the latched message. 2011 Silverado 1500. GM automotive mechanic, with Duramax experience.2011 duramax the exhaust light is blinking I filled the def tank still there. I have codes p0463, p20b9, p2205, p2420, - Answered by a verified Chevy Mechanic We use cookies to give you the best possible experience on our website.Dec 5, 2015 · NOTICE: After the first video played GM saw it and immediately took action to help the customer and take up matters with the dealer to resolve all the issues... Dec 13, 2015 · P20b9. 4795 Views 2 Replies 2 Participants Last post by dieselman723 , Dec 14, 2015 Jump to Latest. D. dieselman723 Discussion starter · Dec 13, 2015. Got the good ol service exhaust fluid system message the other day. Scanned it and got codes for 3 glow plugs and P20B9 which from what I've found out is open circuit for def tank heater. Aug 26, 2016 · If the P20BA code does return, we will need to test the heater and its associated circuits. Typically, there are 2 wires at the DEF Supply Line Heater. For this code, the easiest thing to do unplug the DEF Supply Line Heater connector. With the scan tool hooked up, see if code P20B9 DEF Supply Line Heater Circuit High Input is now active after ... NOTICE: After the first video played GM saw it and immediately took action to help the customer and take up matters with the dealer to resolve all the issues...GMC 2011 3500HD Duramax DEF light on followed by engine check light, Fault codes P2047, P208A, P204C, P205D, U010E. all can be cleared and return at start up. Have removed DEF tank, cleaned system with water, checked wire harness continuity OK, New tank heater, New DEF injector to exhaust, New DEF fluid.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. Upon startup "sometimes" DIC displays emissions issue going into limp mode in 146 miles or so and changes to 46,869 miles with a few seconds then disappears, this display is coupled with the engine light being on. Codes are P20BB and P20BF. Reductant heater B and A control circuit low. Engine light might go off hours later or at a startup or ...DEF temp was 10 degrees this afternoon - only heated up to 13 degrees - fluid still frozen. With it frozen the DEF pump never cycled on. Reductant heater 1 is in the reductant reservoir, reductant heater 2 is in the supply line to the reductant injector, and reductant heater 3 is at the reductant pump.1. 2. Billybob#10 · #21 · May 1, 2020. I HAVE A 2014 DURAMAX WITH 31,000 MILES ON IT. THE CODE SHOWED UP , P20B9 ON MY WAY TO WORK, STATING 99 MILES TILL SPEED LIMITED TO 65 MPH, THEN, 70 MILES TILL SPEED LIMITED TO 55 MPH, ACCORDING TO THE #'S IN 40 MILES I WILL BE LIMITED TO 55 MPH. I AM PARKED BOUT 150 MILES FROM HOME .P20B9, P204C, P208A, P208B, P208C, P203B, P205B, P21CD and/or U02A2 in the powertrain control module (PCM). This may be due to water intrusion within connectors C3613 and/or C4851/C3610 on the reductant harness going to the reductant pump/heater assembly and the reductant level sensor/quality module.Dec 5, 2015 · NOTICE: After the first video played GM saw it and immediately took action to help the customer and take up matters with the dealer to resolve all the issues... Jan 18, 2022 · A day after picking up though my engine light came on. Just got a code reader and this is the code P20B9-Reductant Heater A control circuit/open. Also getting a code for P2509 - Power Input Signal Intermittent. ( I did u plug the negative terminals to try and clear the engine light so perhaps that’s for that code) P203E, P20BA, P20B0, P20B9, P205C, P205D if present replace reductant heater and sender assembly, and vent valve, and reprogram the PCM to the latest level. 20M02C 1.8 Hours 2016-2019 Check for DTCs P2043, P203A, P203B, P203C, P203D, P203E, P20BA, P20B0, P20B9, P205C, P205D, if present replace reductant heater and sender assembly, and vent valve Hello i have a 2013 gmc 2500 hd duramax., i had a p20b9 and a p21dd code. It was the heater, i fixed it sun. Mechanic's Assistant: Have you checked the coolant level? Has there been any leaking from the hoses? It was low in the tank but the message wasnt reading fluid low g. Mechanic's Assistant: Are you fixing your GMC 2500 yourself? …Rvn4me · #2 · Sep 13, 2019 (Edited) P204b DTC Description: Reductant Pressure Sensor Circuit Range/Performance. P205b Reductant tank temp sensor. P205b which I believe is similar/related and GM ended up replacing my entire DEF/heater/tank and module. This is for 2011-2012 This special coverage covers the condition for a period of 10 years or ...FORD F250 6.7L Powerstroke diesel P221C reductant heater B current to low, how to replace the pressure line heater.The FORD part number is HC3Z-5J249-CCNick....
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