Technical Doblo esp trouble

[marts dobbie]

Hi all,I have a 2011 doblo mpv,bought about a year ago,on several occasions,the esp light has flashed up,with a slight loss of power,more of a soft juddering power loss.
If i'm really lucky,the hazards will flash as well.
Has anyone experienced this problem and found the solution to fix it.
I'm going to guess,it may be a wheel sensor,any suggestions will be greatly appreciated.
Martin

 

[marts dobbie]

Could be the dreaded brake light switch, Which I have just changed,see how things pan out,fingers crossed.