a 1 single flash would only last <1second ...a 10 flash should last about approx 2seconds

if its O2sensor you might just have to replace the sensor ... I've heard of the problem of it just stuffing up.

if your o2sensor is stuffed, you can either replace with a new one (from Honda Aus) or if you like I just pulled the o2sensor off my old d16a8 headers and can send it to you if you wish to pay postage ?