Diagnostic trouble codes are being discussed. Technician A says a P0442 is a manufacturer's code and means different things, depending on what manufacturer built the car. Technician B says that a P0304 code is a universal code that means the same thing no matter what manufacturer built the car. Who is correct?
A)A only
B)B only
C)both A and B
D)neither A nor B

Question

Quizplus · Accepted Answer

P0442 is a universal code indicating a small leak in the evaporative emission control system, not a manufacturer-specific code. P0304 is also a universal code, indicating a misfire in cylinder 4, and it means the same thing across all manufacturers.

Diagnostic Trouble Codes Are Being Discussed