  We study one pion production in both charged and neutral current neutrino
nucleus scattering for neutrino energies below 2 GeV. We use a theoretical
model for one pion production at the nucleon level that we correct for medium
effects. The results are incorporated into a cascade program that apart from
production also includes the pion final state interaction inside the nucleus.
Besides, in some specific channels coherent pion production is also possible
and we evaluate its contribution as well. Our results for total and
differential cross sections are compared with recent data from the MiniBooNE
Collaboration. The model provides an overall acceptable description of data,
better for NC than for CC channels, although theory is systematically below
data. Differential cross sections, folded with the full neutrino flux, show
that most of the missing pions lie on the forward direction and at high
energies.
