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Ford DTC P21DD. This DTC sets when the glow plug control module (GPCM) detects insufficient current draw from the reductant tank heater. The presence of this DTC may indicate the vehicle is operating in derate mode and may experience a loss of power. After repair, the vehicle may still display a system warning message. Issue: Some 2017-2019 F-Super Duty vehicles built on or before 1-Aug-2018 equipped with a 6.7L engine may exhibit an illuminated malfunction indicator lamp (MIL) with diagnostic …Hello..2015 Silverado HD3500 4x4silr..check Engine light call P21DD also P20B9 replace the DEF pump light steel aluminates with the same two codes Mechanic's Assistant: Hi there. Is the check engine light blinking or flashing, or is it solid?How I replace the DEF reservoir on Duramax DieselGM part number 84412924As an Amazon Associate I earn from qualifying purchases.Orange Nitrile Gloves https:/... Make sure the engine is properly lubricated and cooled. A broken connector pin can cause a Duramax P249D to not start. If the pin is bent, pushed out, or corroded, the engine could fail catastrophically. A technician must check for damaged components and look for broken, bent, pushed-out, or corroded connector pins to fix the P249D.JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals. I have a P21DD Permanent DTC code. This would be the DEF tank heater. I never anticipate needing the DEF tank heater due - Answered by a verified GMC Mechanic.p01f0 p21dd p2493. Jump to Latest Follow 2240 Views 7 Replies 2 Participants Last post by OkDually, Jan 25, 2022. danbrown1447 Discussion starter ...They said P21DD is, as we know, an issue with the reduction tank heater. Spec says it should be from 5 to 7 amps, mine is at 3.46 max. They quoted me $679 to replace, I believe the heater plus tank.2014 Chevy Cruze Clean Turbo Diesel 202K (Domenic), 1986 Mercedes 300E 5 Speed odo broken (Rammstein - Sold and then repurchased), 2017 Honda Civic Sport Hatchback 6M 7K (Gordon), 2004 Mercedes S430 4Matic 187K (Kevin) - Going to be the daily grinder for now, but I still love my Cruze!!Duramax repair, Reductant system issues. DTC P21DDNov 10, 2018 · retrmecwo · #6 · Jan 4, 2019. My engine light just came on today after getting an alignment from the dealer. Only have 27,000 miles on my 2015 2500. I pulled a 14,000 lbs 5th wheel with it on and off for the last two years and have never had an issue before. Have an appointment Mon with the dealer. Do you know which code is turning the CEL on? If you replaced the DEF reservoir, you will clear the P21DD sooner or later, but the P24AE you mentioned will still be there, since it's unrelated. When I replaced my DEF heater, I had P21DD/P20B9 together (both DEF reservoir related), and they cleared on the first engine start after replacement.While fuel economy was increased, acceleration was seriously compromised, and the loss of engine vacuum led to a dangerous loss of braking assist when the P21DD Renault Clio 2 code system was in four-cylinder mode. In addition to these issues, while the company proposed a hydraulically controlled system that could be switched from within the car, the …Labor: 1.0. To diagnose the P21DD 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.GMC 2500 diesel: P20BF Reductant Heater B Control Circuit. 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 7–16.5 V. The DTCs run continuously once the above conditions are met. GMC. …

JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals. I have a P21DD Permanent DTC code. This would be the DEF tank heater. I never anticipate needing the DEF tank heater due - Answered by a verified GMC Mechanic.P21DD, P221C, P221E The GPCM detects a heater open circuit by detecting low current in the heater. Action Taken When The DTC Sets DTCs P214F, P21DD, P221C, P221D, P221E and P221F are Type B DTCs. Conditions For Clearing The DTC DTCs P214F, P21DD, P221C, P221D, P221E and P221F are Type B DTCs. Reference Information Schematic Reference TECHNICAL SERVICE BULLETIN 6.7L -Illuminated MIL With DTCs P2074, P0401, P0402 And/Or P0170 - Built On Or Before 9-Jan-2019 19-2160 21 May 2019 This bulletin supersedes 19-2112.GMC HD2500 > Pulled code p21dd (Def Heater element problem)> Replaced Def heater > Measured resistance of element before install (approx. 2 ohms > within spec). Drained tank > filled with new DEF. DEF indicator still displayed after I used scan tool to clear Check Engine code from memory. Drove truck a few miles thinking DEF indicator would ...

Labor: 1.0. To diagnose the P21DD 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.Sponsored Links. General Motors has released a fix to address a parasitic battery drain issue that affects certain examples of the 2021 Chevy Silverado 1500 and 2021 GMC Sierra 1500 light duty ...…

Reader Q&A - also see RECOMMENDED ARTICLES & FAQs. Access to the TSB & repair information is instant. Possible cause: May 13, 2020 · Safaladi · #7 · Jun 4, 2020. Just had my DEF tank replac.