Change the wire, or coil plug
This is a Cylinder missfire code, P030x the letter x would normally be a number telling you what cylinder
it is the back cylinder (closest to the firewall) on the passenger side. If you are diagnosing a missfire code on cyl number 4, you probably have a bad ignition coil on that cylinder
that would most likely indicate that your 3rd cylinder is not firing correctly or firein late A.E. "missfire" i would first check your spark plugs, to see if their good, and if they are i would check your timing
What ever number of fuse that has blown.
It's the cylinder located all the way in the back on the passengers side. It goes 1-2-3-4 on passengers side from radiator to firewall and 5-6-7-8 on the drivers side. I'm assuming you have a missfire. Hope this helps. Good luck.
Run a compression test on #2 cylinder. You either have a burnt valve or cracked head.
It could be your O2 sensors going bad. I had the same problem. you may also want to check the ignition coil
Impossible to answer without more information as any number of faults could case a missfire.
It could be computer related, but most likely you might need either a new fuel injector or wires & plugs ..........Max ps. Also clean your injectors they have a fluid today you can just add to your gasoline .....Max
You need to check compression on #6.
If it's just one cylinder it usually indicates worn or stick rings, cracked piston or a serious valve stem seal problem.
for a 2.4 liter dohc quad 4 the casting number is 24574683-18