it has to be reset if you disconnect the battery for a few minutes should do it
There is another problem. see related questions.
If an engine light is still on after replacing a fan's radiator sensor in a RFW engine the coolant sensor should also be checked. If the coolant sensor is bad it will send an error code to the car's computer.
There are pages and pages of things that can cause a check engine light. You need to have it checked with a scantool. Then the code can be diagnosed and repaired.
If the same code resets, then you have a wiring problem.
I had the same problem, so I changed the throttle position sensor and the camshaft sensor as well...it worked for me, hope it works for you too. also change the map sensor that was the reason the light was on
Did you reset the light? I don't know what gasket you changed, but undoubtedly that was not the problem. The check engine light comes on when there is a problem with the emissions system.
try checking EGR valve
There are hundreds of things that can couse a check engine light. You need to have it checked for codes.
i have replace the crankshaft sensor but the code cannot be erased
yes it can. i had a 2004 ford mustang that kept reading that the camshaft position sensor was the cause. Changed the cps and still same code. changed alternator and the code cleared itself!
Clean the MAF. Then clear the code.
If the check engine light is still on there is still a problem. When you fix the problem the light will go out by its self and the fault code will stay in the ecm as a stored code until it's reset.