"Trips" can be hard to define when they aren't directly spelled out as to what the PCM is looking for. For instance, this is directly from Mitchell 1 regarding the P0300.So if it dint came back with the p0421 yesterday, it should not be an issue now? not sure what a two trip fault means
Set Condition: When more than a 2% (2.5 LEV) misfire is measured during two trips. Above 3000 RPM 1 trip, less than 3000 RPM 2 trip.
What does that mean? Idk. I'm sure someone more experienced than me can make more sense of it.