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Old 09-07-2021, 09:42 AM   #1
Naxa
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Drives: 2008 Toyota Yaris Sedan
Join Date: Sep 2021
Location: Southeastern US
Posts: 1
Help- P0301 Code

Yesterday, I got the P0301 code upon starting up my 08' Yaris Sedan. About 7 months ago the previous owner of my car changed the spark plugs (they did not change the coils). About 4 months ago, the CEL flashed above 3000 RPM, the engine was running rough, and I turned the car on and off and I did not have this issue, and eventually the light went away.

I cleared the code yesterday and the engine has been running with no issues ever since, so I cannot get the misfire to happen consistently, only rarely.


What is my best course of action?
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