Need to know what the code is on 2003 toyato corolla- p1349vvt. check engine and oil light comes on.

engine lights come on when there is a serious problem in the engine or transmission
you should be checking the sump oil level, coolant level at the radiator cap, transmission oil level and then having the fault codes read
to continue driving without determining the cause for the light could become very expensive

These days an engine light mostly should be turned off using either a code reader or a scanner. Some might still turn themselves off when the fault is fixed but that facility tends to be related more to the old days when shorting a couple of obd socket pins would cause the engine light to blink out the codes. In those days disconnecting the battery used to clear the codes and reset the defaults.

Knowing why the engine light is on would be a helpful clue to what sort of things to test and maybe repair or replace and for that a code read is the best way, though a code should never be considered a repair instruction.
Best practice is basics first. A thorough visual check of the engine compartment and ensure the routine maintenance is up to date and competently completed. You know the coil and spark plug has been giving trouble so revisit those items, all of them, for further checking and testing the spark power and quality.

Once you are satisfied all is in order, clear the code and roadtest. If the light comes back on you will need to delve further...

Check the fuse in the fuse box.
The fuse box is under the steering wheel or under the front hood.

Same thing happened to me. Did everything I could think of and it still wouldn't work. Ended up pulling every fuse and checking them,turns out it was a blown am2 fuse (under the dash behind the steering wheel) Here's a diagram
http://madstyle1972.com/Repair/68/20i3a/parloc40.pdf

Take it to the nearest Toyota dealer or to a Bosch service centre and have them connect a diagnosic tester to determine the fault.

first get the code that is stored in the computer when the check engine light went on. Most major auto parts stores will read that code out for free. If the oil pressure is truly very low, the engine will be damaged so be careful. Changing the oil pressure switch is a safe move. But if the oil pressure remains low on the new switch you must investigate why. The oil filter could be plugged up, the oil pump could be going bad, or there could be a major internal engine problem. That is why you need the code. It could give a clue as to what is happening in the engine.

you are having a problem with the variable valve timing system which depends on oil pressure to move an actuator which changes the valve timing. this could be because the actuator is clogged or your engine oil pressure is too low. Check the engine oil level first. If the engine has the proper amount of oil, you will need to have the oil pump pressure checked. If that is good, then the variable valve timing actuator should be checked for clogging.

P 1349: VVT variable valve timing. check the document below careful and hope it gives you an idea of what you are dealing with because you need lot of details, And i think its a common problem for Corolla. Good luck bro

http://madstyle1972.com/Repair/05/200o8c05/cip1349.pdf

Hi my Name is Marcus . I have a 99 toyota corolla and i have problems with the brake lights . I have change the bulbs . I have check my fuses , i have also change the brake pad switch . I was told that i to change the brake switch with a part for Toyota Dealership . Plz help me

No,  the check engine lamp will only come on when there is a problem in engine management system, it needs to be checked with an OBDII scan tool to find the problem causing the check engine lamp to come on.