2003 v70 D5 - BCM 0133 warning anti skid service required

[bigbrain]

OK - so the big swede had been behaving very nicely up until a few weeks ago.....I've had problems with the BCM in the past but all was fixed about a year or so ago....the car does have DSTC which can cause additional problems!
The new problem I have is an intermittent anti skid service required flashing up on the DIM. The error codes are as follows:
BCM - 0133 Brake pressure sensor 2 too low
BCM - 0136 Brake sensor...1 & 2...

I've cleared the codes and for now they've stayed off but from past experience with these cars I know it's prudent to nip problems in the bud early on.

So has anyone seen this before....also is this a genuine BCM error or a symptom of some other issue. For example when my BCM broke the last time around the codes were for a wheel sensor which I foolishly believed and replaced!