Although he was behind the shadow of higher profile defencemen in Washington, such as Scott Stevens, Rod Langway, Kevin Hatcher, Al Iafrate and Sergei Gonchar, he was a solid contributor for the club.

In the 1992–93 NHL season, Johansson was part of the defense core in Washington that set a new record for team defence scoring.

Johansson was part of the Washington team that made their improbable run to the Stanley Cup finals in 1998, but the Capitals were defeated by the Detroit Red Wings.

After retiring the second time around, Johansson continued to work as a colour commentator and did studio analysis during game intermissions on Swedish Canal+.

He was doing both Elitserien and NHL games and was one of the two main colour commentators at Canal+, the other one being former Tre Kronor coach Anders "Ankan" Parmström.