May 5, 2024 · P2A00 / HO2S troubleshooting h2os nox1 nox2 p2a00 1 reading Jump to Latest 11K views 11 replies 7 participants last post by mudmaker Dec 1, 2025

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 …

May 21, 2025 · 2018 2500 HD P2A00 and P026D fuel injector map sensor nox sensor p026d p2a00 Jump to Latest 1.3K views 2 replies 3 participants last post by duramaxdoctor_539 May …

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 …

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 …

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. …

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 …

Dec 16, 2012 · If any combination of DTCs DTCs P0101, P0299, P0712, P11CC, P11DC, P2002, P2463, P2627, P2A00, P2459, P22B6, P200C, P200E, P0263, P0266, P0269, P0272, P0275, …

Dec 24, 2016 · It's most likely code P2A00. It's an exhaust sensor that doesn't sense enough air flow through the exhaust system and throws the check engine light on. Once that light is on, it …

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 …