Prior to erasing DTCs on an OBD II vehicle, a scan tool should be used to perform all of these tasks EXCEPT :
A) retrieve memory DTCs
B) record freeze frame data
C) activate all active command modes
D) check monitor readiness status

Question

Quizplus · Accepted Answer

Activating all active command modes is not necessary before erasing Diagnostic Trouble Codes (DTCs) on an OBD II vehicle. The other options are important for diagnosing issues and ensuring that all relevant information is recorded before resetting the system.

Prior to Erasing DTCs on an OBD II Vehicle, a Scan