P0301 is a misfire at cyl no.1 -check the spark, compression and injector
Honda Tech 1818
December, 3, 2010 AT 7:44 AM
It could be two problems
1st- The PGM-FI software misinterprets inputs, causing the
DTCs to set. Need to bring it to the dealership and have them update the PGM-Fi software.
2nd- If the engine taps/raps loudly when going into VCM mode it will causes misfire codes. The rear bank VCM rocker arm pins sticking. In this case the rear intake and exchaust rocker arms needs replacement.
Most likely you only need the PGM-FI software update.