DTC P0301-P0306: Cylinder Misfire: Description

Cylinder misfire is monitored with engine running after successfully performing Crankshaft Position (CKP) sensor learn procedure. DTC will set in Powertrain Control Module (PCM) memory when more than a 2 percent misfire rate is measured during 2 trips or with a 10-30 percent misfire rate during one trip. For misfire DTC identification, see CYLINDER MISFIRE DTC IDENTIFICATION  table. Possible causes for DTC to set are: defective Camshaft Position (CMP) or CKP sensor, improper valve timing, vacuum leak, defective ignition system, engine mechanical problem, fuel contamination, improper fuel pressure or capacity, or defective fuel pump.