As far as I know you can't. It's telling you something is wrong. You may see a mechanic for a diagnostic test to see if it's an oxygen sensor that's gone bad or if your car has a lot of miles on it sometimes they come on when they hit a certain number of miles. Ours does all the time. Then it goes off for a few days and then comes back on.
Disconnect negative on battery for 10 min ...
With the car off, push the odometer button and hold while turning on the car. Keep pushing the button while car is on and light will go out after about 60 seconds.
With the ignition switch off, remove the BACK UP fuse in the passenger's under-dash fuse relay box for more than 10 seconds.
Drive the vehicle for several minutes in 1st, 2nd, 3rd, and 4th gears in 1 position.
Recheck for code p0780.
Drive the vehicle for several minutes in 1st, 2nd, 3rd, and 4th gears in 1 position.
Recheck for code p0780.