Questions tagged [p0300]

The P0300 is a Diagnostic Trouble Code (DTC) for "Random or Multiple Cylinder Misfire" from a vehicle's On-Board Diagnostics-II (OBD-II) system. Also include tags for your vehicle's make and model. If your question also relates to proper use of OBD-II scan tools, include the obd-ii tag too.

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Misfire issue on a 2014 Infiniti QX 60

I have some issues with a 2014 Infiniti QX60 (3.5 V6) that the car repair show is unable to find. I have a misfire code P0300 (random misfire detected). Here are the issues with the car: Car is ...
Calipix974's user avatar
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P0300 code (random misfire, all cylinders) but only after cold start

The past couple of times I've started my car for the first time in the day, I've had a problem with the engine running rough and sputtering, and being really down on power alongside a P0300 code ...
el_zilcho's user avatar
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1 answer
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troubleshooting Cylinder 2 misfire on Toyota MR2 Spyder

I am dealing with Cylinder Misfire p0300/P0302/P0304 codes on my Toyota MR2 Spyder and trying to get to the bottom of the issue. Here is what I have tried so far: Changed all 4 Spark plugs Changed ...
Asdfg's user avatar
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how long does it take to erase OBD codes after unplugging the battery

I have been dealing with Engine Misfire codes (P0300 to P0304) on my 2003 Toyota MR2 Spyder. I changed the spark plugs and engine coils. That did not clear the codes. I used OBD scanner to erase the ...
Asdfg's user avatar
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Chasing 05 Chevy Express Flashing Engine Light P0300

Alright, I'll try to keep it brief (been through tons of threads and I thought I had it). 4 mechanics have looked at it to no avail. 2005 Chevy Express 3500 4.8L V8 130k miles Code P0300 (not sure ...
Beefi1123's user avatar
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1 answer
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P3431 P0304 but engine does not feature cylinder deactivation?

2010 Dodge Grand caravan 3.8L (I think) CEL light came on and codes pulled were p0304 p0300 and p3431 , I'm curious as to what's up with the p3431. Looking it up on the typical obd sites say that it'...
David Scheiber's user avatar
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Intermittent overheating and P0300 at high rpm

I'm hoping someone might have some insight as to what's going on here. https://youtu.be/rhZzZZyLbd4 This is a friend's 2001 Xterra that came in with an intermittent overheating issue. While trying to ...
David Scheiber's user avatar
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2013 Subaru WRX P0300

On a Subaru 2013 since 70,000 miles I've had the fun P0300 code activated and my check engine light on, cruise and traction control disabled. I do not have any other misfire codes being shown(unlike ...
David Rogers's user avatar
5 votes
2 answers
10k views

Random misfires and 2+3 cylinder misfires on 2009 Accord

I have a 2009 Honda Accord 2.4 L. It is reporting random misfires and cylinders 2+3 misfires. There was a thread posted about this same exact problem but was never resolved. Any help would be ...
mwilliams's user avatar
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Smog test fail, lack of oil?

I have a 2001 Toyota Corolla. It failed a smog test and it misfires. It has a code that the vehicle repair shop doesn't recognize, could this be because of lack of oil in my car? My stepson has never ...
Susan A Peterson's user avatar
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2 answers
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How to fix P0300 and P0304 error codes for Hyundai Accent 2009?

Make: Hyundai Model: Accent Engine: 1.6L Year: 2009 Error codes: P0300,P0304 Knowledge level: I know little about cars Help needed: Please help me find out what is going on and how to fix it.
user6625191's user avatar
3 votes
1 answer
3k views

How to fix P0300 and P0302 error codes for Hyundai Accent 2008?

Make: Hyundai Model: Accent Engine: 1.6L Year: 2008 Error codes: P0300,P0302 Knowledge level: I know little about cars Help needed: Please help me find out what is going on and how to fix it.
user334891's user avatar
13 votes
3 answers
41k views

2009 Honda Accord 2.4l P0300 P0302 P0303 P0339

This one came in today with a check engine light on and a complaint of running rough and won't accelerate past 30MPH. Checked the codes. Some misfire freeze frame. Reset and went for a test drive. ...
Ben's user avatar
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7 votes
2 answers
4k views

2004 Saturn ION with Ecotec 2.2: Engine misfire with code P0300, ICM problem?

Car came in with a misfire complaint and check engine light on with code p0300. Looking at misfire history confirms high misfire counts on cylinders 1 and 4 along with lower counts on cylinders 2 &...
Ben's user avatar
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