Question

The cause of a logged fault code in an electronic diesel engine has just been repaired. Technician A says that the codes should be cleared before releasing the vehicle. Technician B says that the customer's password should be reset before releasing the vehicle. Who is right?

(A) A only
(C) Both A and B
(B) B only
(D) Neither A nor B

Answer 1

Technician A is correct; after repairing a fault in a diesel engine, fault codes should be cleared. Resetting the customer's password is not a standard post-repair procedure unless directly related to the repairs.Option A is the correct answer.

Step-by-step explanation:

The subject of the question pertains to the procedures followed after repairing a fault code in an electronic diesel engine. In the context of this question, Technician A is correct. After a fault has been diagnosed and repaired, the corresponding fault codes should typically be cleared from the electronic control module (ECM) to reset the system and to ensure the vehicle's diagnostic systems are starting afresh.

This process helps in confirming that the issue has been resolved, and no residual codes remain that might clutter future diagnostics. On the other hand, resetting the customer's password is not generally part of standard post-repair protocols unless the repair specifically involved the vehicle's security or infotainment systems that may require a password reset.