P2A00 / HO2S troubleshooting - Chevy and GMC Duramax Diesel Forum
May 5, 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 …
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 …
2018 2500 HD P2A00 and P026D - Chevy and GMC Duramax Diesel …
May 21, 2025 · dusty7nm D 2018 GMC 2500 4WD V8 6.6L DSL Turbo Initially, told us to replace Fuel Injector Connection & Injector #4 Then codes P12A6 and P026D Replaced MAP sensor, fuel filter, …
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 …
P026D Issue - Chevy and GMC Duramax Diesel Forum
Jun 24, 2020 · So after this new ECM program recall that I had a couple weeks ago I have had 3 codes pop up. Two of them I cleared last week and haven’t seen again and now this one. I called Chevy …
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 …
2016 Colorado check engine light came on at 400 miles
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 disables …
P22FB Code - Chevy and GMC Duramax Diesel Forum
Feb 19, 2023 · 2022 Silverado 2500HD 6.6L Duramax Hey everyone! I installed the Banks Derringer tuner, Pedal Monster, and Ram Air Intake (still have the boost Tube Upgrade and Monster Exhaust …