Home >> Mazda >> 2002 >> MX-5 Miata Base, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics >> Diagnostic Tests >> DTC P0301: CYLINDER No. 1 MISFIRE DETECTION, DTC P0302: CYLINDER No. 2 MISFIRE DETECTION, DTC P0303: CYLINDER No. 3 MISFIRE DETECTION OR DTC P0304: CYLINDER No. 4 MISFIRE DETECTION >> Possible Cause