West Yorkshire PC Amjad Ditta, 35, also known as Amjad Hussain, appeared at Bradford Magistrates’ Court to face a charge of sexual touching.
He and 15 others are charged with offences against three girls in the Halifax area between 2006 and 2009.
All were given bail and a provisional trial date was set for 14 September. West Yorkshire Police have previously said that he is a police constable based within their protective services operations.
Hussain, who has also been known by the surname Ditta, has been suspended from duty, a force spokesman has previously said. He has carried out work in Bradford in recent years.
He was not required to enter a plea to a single charge of sexual touching when he appeared in court on Monday, but 13 of his co-accused entered not guilty pleas to all the charges that they face.
The charges they face relate to the alleged abuse of three teenage girls in Halifax between 2006 and 2009.
The alleged victims were aged between 13 and 16 at the time.
The offence Hussain stands accused of is said to have taken place in 2009, when he was a serving officer.
He and his co-defendants, who are all from Halifax, were given bail and a provisional trial date was set for September 14.
Those who entered not guilty pleas today were: – Mohammed Vaqaas Abbas, 30, who denied three counts of rape and three of supplying a class C drug – Nadeem Adalat, 34, who pleaded not guilty to four charges of rape and four of supply of a class C drug – Sajid Adalat, 44, who denies rape – Waseem Adalat, 33, denied two counts of rape, as well as single counts of trafficking, supply of a class C drug and common assault.