DEF Heater Failures | Chevy and GMC Duramax Diesel Forum
Jun 22, 2022 · On some 2020-2022 Silverado 2500HD/3500HD and Sierra 2500HD/3500HD trucks equipped with the 6.6L Duramax diesel engine, DTCs P20B9 (Reductant Heater 1 Control Circuit) …
Bypass fix def heater code p20b9 until delete - Chevy and GMC …
Jun 30, 2017 · OK, Message on dash says to service DEF system, 147 kilometers until reduced max speed 105 km/h. Code P20b9 shows up on the scanner. I'm 275 kms from home. So finished the trip, …
P20B9 and P20BB codes initiating when temperatures drop.
Feb 15, 2023 · I have followed the GMC maintenance manual for my 2018 GMC 6.6 duramax hd L5P. Everything functions as it is required. The codes reset and the problems go away for a while. Then …
P20B9, P20BA, and P20BB Looking for insight. - Chevy and GMC …
Mar 3, 2024 · P20B9, P20BA, and P20BB Looking for insight. Jump to Latest 1.4K views 4 replies 2 participants last post by jake615615 Mar 11, 2024 J
P20B9 what now? - Diesel Place
Sep 23, 2017 · Defects and performance for heavy duty truck emission control systems including those found in 6.6L Duramax® Diesel Engines are covered for the first 5 years or 50,000 miles, whichever …
Bypass fix def heater code p20b9 until delete - Chevy and GMC …
May 1, 2020 · OK, Message on dash says to service DEF system, 147 kilometers until reduced max speed 105 km/h. Code P20b9 shows up on the scanner. I'm 275 kms from home. So finished the trip, …
P20B9 - Chevy and GMC Duramax Diesel Forum
Apr 6, 2023 · So I understand that this P20B9 is the DEF tank heater. I had the def tank heater replaced about 25k miles ago under warranty and looks like it has crapped out again. Is there an upgraded …
P20B9 in 21 silverado 3.0 - Chevy and GMC Duramax Diesel Forum
Apr 6, 2024 · P20B9 in 21 silverado 3.0 Jump to Latest 1K views 11 replies 3 participants last post by redwngr Apr 8, 2024 S
STORED CODES P026D,P20B9.P20BB.P248A SPEED LIMITED
Jan 10, 2024 · A forum community dedicated to Chevy and GMC Duramax diesel owners and enthusiasts. Come join the discussion about modifications, towing, classifieds, troubleshooting, …
Code P20B9 - Chevy and GMC Duramax Diesel Forum
Oct 26, 2017 · Check engine light on and countdown to limp mode has begun. Code is P20B9, def heater I believe. I have found something about an extended warranty extension #14652? Anytime …