Hyundai engine light problem ?

Question

about 3 weeks ago my car's engine light comes on and there is grey smoke is coming out from the exhaust .i went to dealership and they fixed it by the reset the codes but after 2 days light came back again .and the point is that when i turn on the cooler in the car the light is turning on .please help me if you have any good advice for that

thanks .

Answer 1

my car was doing the same also have a santa fe 2003 the macanic saw it the first thing he said was change the valves seals he change them and the smoke was gone.

Answer 2

Take it back to the dealership, it could be nothing more than a sensor, but it could be something else. better safe than sorry.