A fuel injector issue commonly causes multiple cylinder misfire error codes on the IS200 engine, this is more likely than two coil packs failing at the same time.
As Zotto stated above try some injector cleaner, although that doesn't always fix injector issues, and try moving the coil packs, e.g. move cylinder 1 or cylinder 2 to see if the error code moves to help diagnose the issue - cheaper than just purchasing new coil packs.