Question

9. The powertrain control module (PCM) or engine control module (ECM) will automatically clear a diagnostic trouble code (DTC) if there are no

additional faults detected after
A. five key-on/key-off cycles.
O B. eighty warm-up cycles.
O C. two consecutive trips.
O D. the criteria to clear codes is reached.

Answer 1

The correct answer is:

C. two consecutive trips.

Step-by-step explanation:

The correct answer is:

C. two consecutive trips.

The powertrain control module (PCM) or engine control module (ECM) will automatically clear a diagnostic trouble code (DTC) if there are no additional faults detected after two consecutive trips. In this context, a trip refers to a driving cycle that includes starting the vehicle, driving it for a certain distance or duration, and then turning it off. The PCM or ECM monitors various parameters and systems during these trips, and if no additional faults are detected over two consecutive trips, it assumes that the issue has been resolved and clears the diagnostic trouble code.