Engine management light on?

I have a honda civic 1.6 2005 my car heats up very quick to the half way point on the temperature gauge i've realised my engine management light came on can someone help me please?

Quickly heating up to 1/2 way is normal. The thermostat will stay closed until the engine reaches normal temp, then it opens and allows some water through the radiator to keep the engine at that temperature. If it doesn't heat up to normal, or goes over normal, then you have a problem.

Check engine light will come on for all sorts of reasons. Get a mechanic to read the codes from the computer and he will then be able to tell you what's actually going wrong. May be as minor as a loose gas cap or a bad spark plug, or it may be more serious. No way to tell if there are no other symptoms.