P0301 code subaru, Had one pro mechanic stumped so far

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P0301 code subaru, Rough driving. Had one pro mechanic stumped so far. Subaru P0301 Number 1 Cylinder Misfire Detected Description OBD-II Trouble Code Description for P0301 Subaru Cylinder 1 Misfire Detected What does this mean? OBD2 Code P0301 Subaru definition: A P0301 Subaru code means that the the car’s computer has detected that one of the engine’s cylinders is not firing properly. Here are common symptoms, causes, and how to fix code P0301 What does this mean? OBD2 Code P0301 Subaru definition: A P0301 Subaru code means that the the car’s computer has detected that one of the engine’s cylinders is not firing properly. Engine started. ECM detected a misfire in Cylinder 1 in the 200 (Catalyst) or 1000 rpm (High Emissions) revolution range. Upon driving. Symptoms Possible sumptoms of OBD code Jan 19, 2007 · 1996 Subaru Outback 2. In this case it’s cylinder #1. Improper idling. Throws code P0301 and runs and idles horribly and flashing CEL. This can lead to a lack of power, rough idling, decreased fuel efficiency, and potential damage to the catalytic converter over time. P0301 is certainly a cause for concern and should be considered a threat to the drivability of your WRX. It’s an OBD2 code and indicates that your car’s first cylinder is misfiring. Also, when the check engine light came on, the traction control light came on, and the 'cruise control light' goes on-and-off every few seconds. Aug 30, 2023 · 2007 Subaru Outback 2. Connected timing Aug 30, 2024 · Code P0301 Subaru Description When a Subaru engine's computer detects a misfire in cylinder 1, it means that the fuel-air mixture is not igniting properly in that specific cylinder. Fixing P0301 should be considered a high priority. I checked resistance of the ignition wires, which appear Jun 14, 2020 · Repair Information for P0301 Subaru code. 2K views 5 replies 5 participants last post by The OG Leonardo Jan 22, 2025 Oct 6, 2025 · If your car's ECU throws a P0301 trouble code, you have an engine misfire issue. Upon starting from a cold start the next day the car had a rough idle, low power and a misfire. It also can Make: Subaru Code: P0301 Definition: Cylinder 1 Misfire Detected Description: Engine stalls. I have done lots of diagnostic tests and replaced a couple parts with no luck. Cylinder 1 Apr 21, 2023 · P0301 Fault Code Model Years 2012 to 2017 2014 crosstrek xv p0301 Jump to Latest 7. Note: If the misfire is severe, the MIL will flash on/off on the 1st trip. Aug 9, 2024 · Hi all, I am working on a 2007 Outback 2. I changed sparkplugs and must say I could not find (like the story of Goldielocks) a socket, extension or combination of both to remove or install #4 plug. Nov 25, 2023 · Discover the meaning of Subaru OBD-II trouble code P0301, common causes of a cylinder 1 misfire, and how to diagnose and repair this issue in your Subaru vehicle. Unlike a lot of the OBDII codes, this code has to do directly with engine combustion. 5i automatic with a really bad misfire on cylinder 1. 5 Auto I have developed mis-fire codes for cylinders 1 and 2. 5L 5MT Miles: 209,394 Fault: P0301 misfire on cylinder 1 Preceding fault symptoms: car was running normally at idle and the stumbled momentarily only to recover. Learn what Cylinder 1 Misfire Detected means, location and how to repair. Nov 19, 2018 · P0301 is a fairly common trouble code with the Subaru WRX. Vehicle driven to a speed of over 3 mph. Cause: Wiring harness between ECM Mar 10, 2024 · The check engine light came on so I checked the code and it shows PO301 error-1st cylinder problem.

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