2021 Rogue - P0300 Code

[Ptroiano]

The P0300 multiple cylinder miss fire code came up on my Rogue. The car seemed to be running fine, no fast idle, hesitation or anything. I went ahead a replaced the spark plugs (car has 91000 miles). The code came back the next day. There are no other codes just the one. One of the coils had a little white dust on it so I replaced that one coil. Its been 3 days and so far no error codes. I really find it had to believe one coil would cause multiple cylinders to miss fire but you never know. I would think someone relevant to all cylinders would be the most likely fix, like cam or crank sensors, Air mass sensor or vacuum leak. I didn't find any vacuum leaks. If this error returns what is the best way to narrow it down other than just replacing parts? Can I drive the car without causing damage since it really shows no signs of an issue other than the code.

Thanks,
Paul

[VStar650CL]

You may have more than one coil going south. The misfire coding in the ECM doesn't reflect relative counts, you can have 20 events on one cylinder and 2 on another and you'll still get a P0300. Use voltage drop to check your engine grounds, that's the number one cause of premature coil failure. More than 50 millivolts (0.05V) between the block and negative battery post is trouble and will cause the engine to "eat" coils.

[Ptroiano]

Thanks, Ill check it out and let you know. Still no codes so maybe that one I replaced was bad.

[CAROL111]

Quick question — is yours the standard Rogue or Rogue Sport?

I’ve been comparing some fitment details across 2021+ Rogue models lately and was curious.