The possible dismissal of the juror has been discussed by lawyers for the past week.
Lead prosecutor Maurene Comey had asked that a juror be dismissed for what she described as "a lack of candour".
The prosecution said the juror had disclosed that he recently moved to New Jersey with his girlfriend and had been staying there for most of the trial.
When he was questioned behind closed doors, the juror said he was staying in an apartment in the Bronx, New York, during the week, for four to five nights, when he was working and doing jury duty.
But the juror had said at an earlier stage, in a prospective juror interview several weeks ago, that he lived in the Bronx with his fiancé and daughter.
At one point, the juror had also mentioned living with an aunt, but later omitted her.
The judge said he had found "several inconsistencies" between the juror's answers in the court transcripts.
The inconsistencies, the judge said, could point to a desire to "shade answers" and raised serious question about the juror's "candour" and his "ability to follow instructions".
The judge noted that there were six alternative jurors to preserve the "integrity" of the court. "Removal of the juror is required, in this court's view," the judge said.
One of Combs' lawyers, Xavier Donaldson, objected to the judge's inclination, saying it is "very, very common" for New Yorkers to move between the city and New Jersey.
He said he believed the court is "equating inconsistencies with lying."
"I do believe he will be able to follow instructions," Donaldson said, adding that Juror No. 6 has been "awake - I can't say they all have been awake".
The defence's main objection related to the juror's race, with Donaldson noting that the trial's jury was the most diverse he had seen in his three-decade career.
"That part is important to me and my client," Donaldson said, adding that if the court were to dismiss the juror, it would be "a step backward."
"I don't generally play the race card unless I have it in my hand," Donaldson said.
Combs's legal team had requested a mistrial should the juror be dismissed.