Johnson was helped off the field after suffering an unspecified injury late in Sunday's 26-17 loss to the Raiders, Field Yates of ESPN reports.
Johnson logged a 9-105-0 stat line on 12 targets in the contest, but now the focus turns to his status for next Sunday's game against the Bengals. If he's out or limited next weekend, James Washington presumably would see added WR snaps behind Chase Claypool and JuJu Smith-Schuster.