P2A00 / HO2S troubleshooting - Chevy and GMC Duramax Diesel Forum
May 6, 2024 · P2A00 / HO2S troubleshooting h2os nox1 nox2 p2a00 Jump to Latest 11K views 11 replies 7 participants last post by mudmaker Dec 1, 2025
2019 GMC L5P check engine light - Chevy and GMC Duramax Diesel …
Apr 10, 2025 · I have a 2019 GMC Duramax with the L5P engine throwing a P2A00 code, NOx sensor which I have changed twice along with a new MAP sensor, all OEM. It’s been to 3 shops and still …
2018 2500 HD P2A00 and P026D - Chevy and GMC Duramax Diesel …
May 21, 2025 · Tags fuel injector map sensor nox sensor p026d p2a00 Jump to Latest 1.3K views 2 replies 3 participants last post by duramaxdoctor_539 May 21, 2025 D dusty7nm Discussion starter 2 …
P2A00 and P026D After Regen - Chevy and GMC Duramax Diesel Forum
Jul 24, 2024 · P2A00 and P026D At the beginning of the trip my regens were about every 300 miles, and now they are about every 90 miles. I checked my Banks boost tubes and all the clamps are tight and …
Nightmare in progress - Chevy and GMC Duramax Diesel Forum
Sep 17, 2018 · Hey guys I have been dealing with a nightmare with my 2017 Silverado 2500 L5P since the first day I bought it. I purchased the vehicle with 29k miles and it was certified preowned. The day …
2017 L5P Duramax Code P026D - Chevy and GMC Duramax Diesel Forum
Nov 26, 2019 · 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 …
P2A00 / HO2S-Fehlerbehebung - Chevy and GMC Duramax Diesel Forum
May 5, 2024 · NOx-Sensor 1 gemäß dem Fehler P2A00 ersetzt Bezüglich der Heizung habe ich heute noch etwas genauer nachgesehen und festgestellt, dass NOx 2 nach 30 Meilen Fahrt zeitweise -100 …
L5p bulletins, recalls and updated calibrations | Page 7 | Chevy and ...
Jan 23, 2020 · If any combination of DTCs DTCs P0101, P0299, P0712, P11CC, P11DC, P2002, P2463, P2627, P2A00, P2459, P22B6, P200C, P200E, P0263, P0266, P0269, P0272, P0275, …
L5P fuel filter failure - Chevy and GMC Duramax Diesel Forum
Mar 25, 2021 · P11D5 - Nox sensor #2 exceeded learning limit P2A00 - O2 sensor #1 performance P0172 - Fuel system rich I read the codes to the GM service writer and wrote down the explanations …
P026d - Chevy and GMC Duramax Diesel Forum
Aug 24, 2021 · Cleaned the MAP and replaced the NOX1 and did the re-learn (was also getting a P2A00 code). Got the P2A00 code resolved with the new NOX1, but still getting the P026D.