Pietersen was charged with breaching the ICC code of conduct by the on-field umpires Darrell Hair and Simon Taufel and TV umpire AV Jayaprakash after he showed dissent upon being given out on day four of the match.
He subsequently pleaded guilty to breaching the code at a hearing conducted by ICC match referee Ranjan Madugalle.
Though the incident took place on Sunday, the hearing was conducted after the end of the match on Monday. The hearing was attended by Pietersen, England captain Andrew Flintoff, coach Duncan Fletcher and the match umpires.
This type of offence carries a minimum penalty of an official reprimand and a maximum penalty of a 50 percent fine of a player's match fee. The decision was final.
India's nine-wicket win in the second Test on Monday put them 1-0 up in the three-match series.