Code p0302, engine light and trac off light on, just replaced spark plugs?

2013 TOYOTA COROLLA
197,500 MILES • 0.9L • 4 CYL • 4WD • AUTOMATIC
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PAULAKRISTENM
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Hello,

Yesterday my car's engine light and the trac off light came on and my car was rough/slowing down. I took it to my mechanic, and he changed out my spark plugs and said it's all fixed. I turned my car on, and the 2 lights were still there. My car is driving better but I still don't like that the 2 lights are on. Tonight, i did a checker and I got the p0302 code indicating cylinder 2 misfire.

Any advice?
Oct 18, 2024 at 7:00 PM
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STRAILER
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Yep, that means #2 is still misfiring, I would do a compression test and if okay replace the ignition coil on that cylinder which is a common failure.

Here is a guide to help:

https://www.2carpros.com/articles/how-to-test-engine-compression

And this guide can tell you more on misfire problems:

https://www.2carpros.com/articles/engine-misfires-or-runs-rough

Please go over these guides and get back to us. Here is how to change the coil out. Check out the images (below).
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Oct 19, 2024 at 9:29 AM