Code P0302

2003 TOYOTA CAMRY
211,000 MILES • 2.4L • 4 CYL • 2WD • AUTOMATIC
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DUTCHGIRL
  • MEMBER
  • 17 POSTS
I've already changed the spark plugs. There seemed to be a little bit of oil on the old ones. Normal?
Is there anyway you could tell me what all I should check and in what order so that I can fix this?
I'm good at changing parts. It's the diagnosis part I haven't learned yet.

Thanks in advance!
Jul 23, 2021 at 6:41 PM
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JACOBANDNICKOLAS
  • CERTIFIED EXPERT
  • 110,175 POSTS
Hi,

The first thing I need you to do is check for spark to the new plug. If you follow the directions in this link, it will explain how it's done.

https://www.2carpros.com/articles/how-to-test-an-ignition-system

Next, when you replace the spark plug, you remove an ignition coil from it. What I would like you to do is switch that coil (cyl 2) with a different coil on the engine. Then clear the code and run the engine to see if the misfire changes from cyl 2 to the one you switched the coil to.

If it does, then replace the coil.

Let me know what you find or if you have other questions.

Take care,

Joe
Jul 23, 2021 at 10:44 PM