Check engine light 1996 land Rover Discovery/California
Hello everyone. I recently was having some brake problems (pedal to the floor), so I installed a new brake master cylinder and got the brakes working again

but in this process of playing around with my brakes I wanted to test drive the rover with the ABS electrical plug disconnected, and again reconnected. However when I disconnected the ABS plug the engine was running. (I should have shut it off) So now my check engine light is on

just in time for a smog check that is due Now

how can I get it off?? any ideas.. Thank you , Kevin 1996 Land Rover Discovery 150k