Common Car Diagnostic Terms Explained
What is the definition of a "Diagnostic Trouble Code (DTC)"?
A. A code that indicates a fault in the vehicle's system
B. A code that shows the vehicle is running smoothly
C. A code that represents a recommended maintenance action for the vehicle
Answer:
A. A code that indicates a fault in the vehicle's system
Diagnostic Trouble Code (DTC) is a code that indicates a fault or issue in the vehicle's system. When a problem is detected in the vehicle, the onboard computer generates a DTC to help technicians identify and fix the issue.