A misfire occurs when the fuel-air mixture in the cylinder fails to ignite properly, causing a disruption in the engine's combustion process. Popular GMC Acadia fault codes along with an explanation of their meanings. I’ve got a 2011 with 155,000 Mi it’s been giving me on and off issues with misfiring. So it isn't the plug or the coil one would summarize. 5 5 reactions · 34 comments 󱎖 What causes p0300 code in 2013 gmc acadia? Lori Belk Mechanic Advice 6w · Public Nov 18, 2014 · I have a 2009 GMC Acadia SLT. Today, CEL comes back on again as well as stabilitrac light inop. Feb 27, 2022 · Engine misfires can often go unnoticed until they escalate into significant problems. Onstar always says that the code Mar 22, 2024 · Hi, I have 2011 GMC Acadia SLT with 181,000 miles I just recently replaced all the O2 sensors to clear my check engine light it stayed cleared for about 200 miles and then I got a flashing check engine light and the code was P0306, but that went away right away And now about 150 miles later my check engine is back on with codes P0430, P0301 and For More Info visit us at: https://1aau. The first is cylinder 1 misfire, the other one is cylinder 5 misfire, I didn't get a printout on the 300 but it probably is another cylinder misfire. This article will explain the meaning of the P0301 code May 27, 2014 · So, I went and had the codes pulled, I really should get my own scanner by the way, and it return three different codes. Nov 9, 2021 · Erased the code, started the engine, still smoking and hesitating, pulled the code and it read P0301 again. Jan 3, 2017 · so Christmas eve my wife's Acadia CEL came on. What causes OBD-II fault code P0301? When the engine control module (PCM) detects that cylinder one is not sufficiently contributing to keeping the engine running properly, it will set code P0301. P0301 is certainly a cause for concern and should be considered a threat to the drivability of your Acadia. But the main 4 causes are the same Scotty Kilmer, mechanic for the lat 46 years, shows how to figure out what's wrong with a car that's misfiring and has the check engine light on with code P0 Aug 19, 2024 · How to repair P0301 — Cylinder 1 Misfire Detected Jan 18, 2025 · P0301 code gets triggered when the Engine Control Module detects an engine misfire on cylinder-1. Any help with p0300 and p0301 codes? George Kazakos HHR OWNERS 2y · Public Any help would be appreciated. They were unable to start the veh Aug 15, 2018 · P0300 is a generic OBDII code that can occur with the GMC Acadia. Sep 6, 2024 · The P0301 code means that cylinder 1 is misfiring or is randomly misfiring. Fixing P0301 should be considered a high priority. I was using a new scanner and it also had an I/M readiness Dec 9, 2012 · We have been experiencing recurring check engine lights on our 2008 Acadia. Sep 6, 2024 · Code P0301 GMC Description When a GMC vehicle displays the diagnostic trouble code P0301, it indicates that a misfire has been detected in cylinder 1 of the engine. Code shows P0301 misfire. It’s an OBD2 code and indicates that your vehicle’s first cylinder is misfiring. If there are no symptoms, the simplest thing to do is to reset the code and see if it comes back. Oct 6, 2025 · If your car's ECU throws a P0301 trouble code, you have an engine misfire issue. Also you can shut vehicle off misfiring and restart it and runs perfect It throws only these two codes: P2146 and P0301 2010 GMC Acadia - 228000 miles - automatic transmission, V6, SLT I had my timing chain replaced at the dealership. When I call Onstar to have them run the onboard diagnostics, it always comes up as the P0420 trouble code. After talking to her I found out that she had the E light on for awhile and it was a blazing 25 degrees today. May 20, 2022 · P0300 multiple ignition misses error in random cylinders, and code P0301, P0302, P0303, P0304 - specific ignition misses. Here are common symptoms, causes, and how to fix code P0301 What does this mean? A P0301 GM code means that the the car’s computer has detected that one of the engine’s cylinders is not firing properly. Typically, a misfire will trigger a check engine light (CEL), alerting you that your vehicle requires attention. CEL went off after a couple of days. Now How to fix a Chevy/GMC P0301 engine code: Cylinder 1 Misfire DetectedA P0301 code is set when the computer (ECM/PCM) reads several misfires have occurred in Jul 21, 2018 · HAVING SAME ISSUES WITH RANDOM MISFIRE CODES P0300, P0304, P0302, P0306, P0301, P0303, P0305, P0420, SHUT OFF AT REDLIGHT AND WANT START BACK , ANY IDEAS WHERE TO START The P0301 GMC code means that the cylinder 1 is misfiring or is randomly misfiring. . The official title for this code is Catalyst System Efficiency Below Threshold. Check out this article to learn how to best deal with the issue. A failing battery can trigger all sorts of trouble codes.

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