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

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

CAR REPAIR CONTRIBUTOR
54,189 POSTS

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).

Images (Click to enlarge)

Oct 19, 2024 at 9:29 AM