Technician A says that OBD-II includes generic as well as vehicle manufacturer's specific DTCs and data displays. Technician B says that OBD-II have common DTCs. Who is right?
A) Technician A only B) Technician B only
C) Both technicians A and B D) Neither technician A nor B
Question 2
Which item is NOT important to know before starting the diagnosis of an engine performance problem?
A) List of previous repairs
B) The temperature of the engine when the problem occurs
C) Type of gasoline used
D) Brand of engine oil used
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