Part of the generic P0301 overview — this page covers the Honda meaning specifically.
OBD-II Diagnostic Trouble Code
P0301
Misfire No.1 cylinder
P
Powertrain
engine / trans
engine / trans
0
Generic
SAE standard
SAE standard
3
Ignition / misfire
01
Misfire No.1 cylinder
Severity · general guide
High
Misfire — address promptly
Code type
Honda
System
Powertrain
Model
Insight
Years
2010