The Pakistan Cricket Board (PCB) said Fakhar breached Article 2.14 of the code of conduct, which relates to illegally changing the condition of the ball.
The incident occurred in the closing stages of the match, when the on-field umpires penalised Lahore Qalandars five runs and changed the ball before the final over of Karachi Kings’ innings.
Although Fakhar denied the charge and contested it at a full disciplinary hearing, match referee Roshan Mahanama upheld the offence after reviewing the evidence and hearing his case.
Lahore captain Shaheen Shah Afridi, team director Sameen Rana, and manager Farooq Anwar were also present at the hearing.
As a result, Fakhar will miss Lahore Qalandars’ next two PSL matches against Multan Sultans on April 3 and Islamabad United on April 9.
Under PSL rules, a first Level 3 offence carries a penalty ranging from a one-match to two-match ban.