I have a 2003 Ford Expedition. The door open light is staying on on my OBD. How do i check which sensor is damaged? Thank you

Start with switch on the inner door casing.

Spray wd-40 in the doorlock

Make sure all your doors are closed correctly drive the car until the lights turn off once the lights shut off stop the car and put it on park start by opening the driver door if the lights do not turn on then you know that's your bad door sensor if the lights do turn on then you know that sensor is good and you will have to repeat the process again one door at a time until you open the door that the lights does not turn on then you will know thats you're bad sensor telling you your door is open and leaving your lights on good luck