Questions tagged [p0301]

The P0301 is a Diagnostic Trouble Code (DTC) for "Cylinder #1 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 OBD-II scan tools, include the obd-ii tag too.

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Rough idle or slight miss at idle in relation to purge valve

I'm working on a 2006 Chrysler 300, with the 2.7L v6 (the internal water pump one). I just replaced the EGR valve due to a P0404 and surging while driving (verified with a scan tool the EGR valve ...
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Astra MK6 - when warm, rough idle and shudders while accelerating

Here's a video: https://youtu.be/wYyaW9wRt6U For a couple of months now my car has had a rough idle and shudders while accelerating - Vauxhall Astra J Exclusiv MK6, 4 years old 61k miles spark plugs ...
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72 views

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 ...