The check indicator light still light up after the engin started . please advice me.

How did you confirm oil sensor is ok ? Personally I would change to be sure

Low Engine Coolant. You perhaps have leaky coolant tank.
Check if the tank holds coolant.

Check Engine Light On you decide !

YELLOW MOTOR INDICATOR LIGHT MEANS CHECK ENGINE LIGHT HAVE VECHICLE CODE SCAN TO SEE WHAT CAUSING CHECK ENGINE LIGHT TO FLASH.

SEE IF BRAKE LIGHTS WORKING.IF NOT CHECK FUSE.BRAKE LIGHT SWITCH HAS TO HAS POWER SO THE BRAKE TRANSMISSION SHIFT INTERLOCK WILL WORK SO YOU CAN SHIFT OUT OF PARK.IF ALL IS GOOD CODE SCAN CAR FOR A ELECTRONIC TRANSMISSION CONTROL UNIT SELECTOR. FAULT CODE.

Information taken from: http://www.idavette.net/tech/oilreset.htm

[quote]
The "Change Oil" indicator is reset by using a sequence of Driver Information Center (DIC) key presses as follows:

1. Turn ignition "ON", but do not start engine. (ALDL pin "G" should NOT be grounded.)
2. Press the "ENG/MET" button and release, then, within 5 seconds, press it again.
3. Within 5 seconds of Step 2, press and hold the "GAUGES" button. While the button is held, the "Change Oil" indicator will flash.
4. Continue holding the "GAUGES" button until the "Change Oil" indicator stops flashing and goes out, indicating successful completion of the reset cycle. This should take about 10 seconds.
If it does not successfully reset, turn ignition "OFF" and repeat the procedure from Step 1.
[/quote]

check air filter for dirty , how many miles or kms have your car? , maybe need to replace spark plugs, try to reset the ecu for a momentany malfunction, remove the negative battery terminal few minutes and reconnect,start engine and drive, check if lights goes off , please write me

Sometimes if the gas cap is open while the car runs, the Check Engine Light turns on. This is common and happens on many vehicles. Try unplugging the negative part of your battery, let it sit for 10 minutes, then plug it back in and start the vehicle up. Most of the time the check engine light will disappear. If it persists, you might have to get a mechanic to clear the code and settle your check engine light.

Hello There.

These come on as a precousionary measures, even if there is a slight misfire in the engine it generates a code which can be read and inform you why it is there, most of the time these are minor things and light can be reset. The only time you need to get seriously worried is when the letters 'eml' light up with the engine light, then you have a serious problem.

Hope this helps and please don't forget to rate me.

thanks