Cylinder 1 is misfiring. 300 indicates a problem with all cylinders and 301 or 302 would indicate a problem with cylinders 1 or 2 respectively
Trouble code P0301 means:Cylinder 1 misfire detected
Trouble code P0301 means:Cylinder 1 misfire detected
Trouble code P0301 means: Cylinder 1 Misfire Detected
Trouble code P0301 means:Cylinder 1 misfire detected
Trouble code P0301 means:Cylinder 1 misfire detected
Trouble code P0301 means:Cylinder 1 misfire detected
Trouble code P0301 means: Cylinder #1 misfire detected
Trouble code P0301 means:Cylinder 1 misfire detected
Trouble code P0301 means:Cylinder no.1 misfire detected
Trouble code P0301 means:Cylinder 1 misfire detected
Trouble code P0301 means: Cylinder 1 Misfire Detected
Trouble code P0301 means:Cylinder 1 misfire detected