2003 Kia Sorento runs good, but backfires codes P0300, P0301. P0303, P0304, P0727?

Question

2003 Kia Sorento runs good but backfires codes are P0300, P0301. P0303, P0304, P0727 any suggestions?

Answer 1

Hi there,

P0300-304 are misfire codes. This could indicate that the timing belt has jumped time and is causing a small backfire and should cause some rough running. It's also possible the issue is with the ignition coils and wires.

The P0727 is a transmission code. It means there isn't any engine speed input for the transmission. This could be a problem with the tcm or the pcm as well as the wiring between the two.