My family bought this car for a good price. Well, the dealership fixed a ABS system failure and just did all the little things. Well instant I got it i had a catalytic converter efficiency bank 1. Well, changed the spark plugs and changed oil still, had the code reset many times keeps coming up. Now the low coolant light is coming on but I have fine coolant, not low. It comes on intermediately. Now, I am a high school student and I HATE it when everyone's engines are working perfectly but mine decides to be a idiot. Any help would be enjoyed.