engine check light

[qwerty12]

Hi , around 4 days ago i had to remove a hose pipe from the thermostat to the back of the car due to a leakage of water. so prior removing the hose i had to remove the battery and left the car without the battery for 4 days. after i tried to start the car it didnt want to come on and i charged the battery and the problem was solved , car started. Now as i start the car im getting an orange error 'check engine - need repair'. can anyone suggest what the problem might be or how do i can fix a reset or something. thanks

 

[dumdum]

it needs a fault code read as a bare minimum, and then further work depending what that shows up, no one can guess whats wrong with your car from what you've written

 

[RZC2010]

id check that all the wires that were disconected have been put back on.

air mass meter/ battery monitering, and all the other cables. ive not long done the same coolant hose and there were quite a few cables that i removed/ unbolted.