Hi guys, I realise this is probably a long shot, but has anyone had much experience with PID 24 on the OBD II protocol?

I am specifically interested in diesels which report on this PID, has anyone been able to receive useful information? I am having some limited success with 2 vehicles so far.

Anyone who has experience let me know. Anyone with an elm327 cable and MS hyperterminal let me know, as I would be interested for them to try a few things.

Kind regards.