P0300 Chevrolet -

Question

receiving po 300 and po 101 replaced cat o2 sensor map sensor still have rough idle and stalling

Answer 1

Hi Jim

The code is for the maf sensor, the mass air flow sensor would cause the P0300 multiple misfires as well. If the engine is creating the wrong mixture because of a faulty reading from the maf sensor it could be to rich or to lean which will cause multiple misfires.