While Discussing OBD II Systems: Technician a Says If a Misfire

Multiple Choice

While discussing OBD II systems: Technician A says if a misfire condition threatens engine or catalyst damage, the PCM flashes the MIL. Technician B says the PCM illuminates the MIL if a defect causes emission levels to exceed 1.5 times the emission standards for that model year. Who is correct?

A) A only
B) B only
C) both A and B
D) neither A nor B