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Code P0302, engine light and trac off light on, just replaced spark plugs?

Tiny
PAULAKRISTENM
  • MEMBER
  • 2013 TOYOTA COROLLA
  • 0.9L
  • 4 CYL
  • 4WD
  • AUTOMATIC
  • 197,500 MILES
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?
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Friday, October 18th, 2024 AT 7:00 PM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 46,907 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).
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Saturday, October 19th, 2024 AT 9:29 AM

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