engine lights

What is your question?

engine inspections lights - how do I check and clear. this is car i just bought and it has two insp. lights showing. Rear taillight pops on screen each time I drive. I've checked and found the rear right passenger tail light intermittedly comes on and off. Is this just a loose wire? I've also had a cracked oil pan (since replaced) is there supposed to be a protection plate to prevent such occurances?