Which of the following ESTs can be used to access active diagnostic codes?

A) flash codes
B) PC and OEM software
C) NEXIQ iQ
D) all of the above

ESTs

A generic term that could refer to various concepts depending on context, such as Environmental Stress Testing or Electronic Service Tools.

Diagnostic Codes

Specific codes that are generated by a vehicle's onboard diagnostics system (OBD), indicating issues or malfunctions within the vehicle.