Engine check light after removing fuse box

[taybelZ]

LS Focus with 75,000kms on it.

Removed the fuse box on the passengers side to replace the aircon filter, (none in there to start off with).

Put the fuse box together (with the plugs clipped in) and engine check light is on now.

Unplugged and plugged it back twice now, and same story!

Any suggestions on what to check again before i take it to the dealer?

(I did disconnect battery for 30 minutes, but didn't do anything)

[marg99]

Ensure all the multi pin plugs sit square on the fuse box. When I replaced my pollen filter on the LT had similar issues because things were not aligned properly.