TypePowertrain - Ignition System or Misfire - ISO/SAE Controlled Description Cylinder No. 1 - misfire Cause Wiring, mechanical fault, fuel system, EGR valve, injector, intake/ignition system, CKP sensor, HO2S front, ECM Try also:https://www.obd-codes.com/p0301...
A misfire for one specific cylinder should prompt you to check that cylinder compression/sparkplug and injector Misfires can be caused by worn or fouled spark plugs, a weak spark (weak coil, bad spark plug wire), loss of compression, vacuum leaks, anything that causes an unusually lean fuel...