This appears to be a diode, and tests out as one, if you look closely at the photo (diode shown with yellow arrow pointing to it), you will see a dull grey stripe near the black end of the diode (between the blue dot and black area).
The diode I am trying to identify the type and parameters of, is identical to this one, except that the grey stripe is black. (it shattered after a short) - It has the same 4 blue dots in the white area - but like the one photographed, no numbers or letters on it. So identical to photo, except black stripe rather than faint grey stripe, near black end, and 4 blue dots in the white area. Found on Nissan engine computer.