Catalyzes the omega-hydroxylation of various fatty acids (FA). Acts on saturated and unsaturated fatty acids with chain lengths from C12 to C18. Involved in the biosynthesis of 16-hydroxypalmitate. an organic molecule + O2 + reduced [NADPH--hemoprotein reductase] = an alcohol + H(+) + H2O + oxidized [NADPH--hemoprotein reductase] Expressed in stems, flowers and siliques. By abscisic acid (ABA), auxin, the etylene precursor ACC and cold treatment. Down-regulated by wounding and in etiolated seedlings. No visible phenotype under normal growth conditions, but mutant plants have reduced content of the flower polyesters 16-hydroxypalmitate, 10,16-dihydroxypalmitate and 1,16-hexadecanedioate. Belongs to the cytochrome P450 family.