Question

Tech A says that the onboard diagnostics II (OBDII) system is designed to set fault codes if the vehicle exceeds the limits programmed within the vehicle system. Tech B says that the EPA Federal Test Procedure pass and fail points are the same for every vehicle. Who is correct?

Answer 1

Technician A is correct because the onboard diagnostics II (OBDII) system is designed to set fault codes if a vehicle exceeds the programmed limits within the vehicle system.

What is an onboard diagnostics (OBD) system?

An onboard diagnostics (OBD) system can be defined as an electrical circuitry that is designed and installed on vehicles, so as to enable self-diagnostic and reporting functionalities within the vehicle system.

This ultimately implies that, onboard diagnostics (OBD) system is typically configured to indicate proper function and calibration of a vehicle's main components and emissions pollution control systems.

In conclusion, Technician A is correct because the onboard diagnostics II (OBDII) system is designed to set fault codes if a vehicle exceeds the programmed limits within the vehicle system, which would cause the DTC/MIL to illuminate.

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