Ok, remembering I know nothing about ABS and brake fluid, where is the reservior cap located? Will check that and then plug this fault reader in to see what that is saying.
I am not using my car alot at the moment anyway.
The fact that "occasionally" and I mean occasionally, the handbrake light does go out again (just not as often), would that point the fault towards any particular direction do you think?
Thanks for everyones help, much appreciated