I have an old Camry 2010 LE 2.5 4 cylinder. It’s been having some issues. It had been losing power randomly due to a p0420 code. This code got corrected. The car started throwing a p0301 code an misfiring on cylinder 1 after a couple of weeks driving. I replaced the spark plug in this cylinder and the issue was corrected. About a week or so later cylinder 3 started misfiring some I just replaced all 4 plugs at once this time. At this point cylinder 2 begin to misfire and bad the car losses power sometimes when this happens to the point it won’t accelerate again until it is turned off an back on.
I have swapped coil packs and spark plugs with cylinder 1 and still get the code for cylinder 2. I have tested all the connections to the coil packs with a multi meter. I tested the connections for the fuel injectors. I swapped fuel injector one and 2 and still get the same misfire. I even reset the pcm on the car and drove it about 10 miles. The idol feels good!! but it still misfires while driving. The o2 sensors were all replaced not too long ago as well. I’m not sure what my next step should be. I attached a report from my scanner hopefully it helps I’m still new to all of this. Any advice would be greatly appreciated. Thank you!!

 

Might try toyotanation.com

For $25 one can access service info for 2 days from the Toyota website.

https://techinfo.toyota.com/techInfo...a.com%3A443%2F

Check wiring connections and grounds.