Intermittent dashboard lights on 2001 Subaru Outback

Why would a check engine light come and go? When it's on it
checks out as a knock sensor. Also, the brake light is similar, but I can occasionly turn it off by using the handbrake. ....

Asked by for the 2001 Subaru Outback
1 answer
the check engine light comes on whenever there is an engine management system failure. you can either repair that problem or you can ignore it.