I'm pretty sure you're confusing the "Check Engine Light" with the "Check" light. They are two different things. The "Check" light (not check engine light) is supposed to come on temporarily when there is a fault somewhere in the OBC, which is what you are experiencing with the brake circuit failure.
1998 BMW 328is
1966 Pontiac GTO
2007 Subaru Impreza 2.5i 5-door
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