Check engine Light on and Flashin when driving

Error codes P0300 Random cylinder misfires within a predeteermined period of time. P1305 Igniter No. 2 Circuit Malfunction P1310 Igniter No. 3 Circuit Malfunction P1320 Igniter No. 5 Circuit Malfunction P1340 Igniter N0. 8 Circuit Malfunction No idea why the error codes. The truck runs fine, no loss of power.