Do you really know cars?

This test your true knowledge of cars.

1 What do you do if you see the battery light on your dash come on?
2 What is the referance voltage for most of your engine sensors?
3 What does code PO301 mean in an obd2 system mean?
4 What is a catalytic converter made of?
5 What measurement refers to the forward or rearward tilt of the steering axis?