Answer :
D. All answers are correct. A scan tool can diagnose faults in a (A) knock sensor, (B) EVR solenoid, and (C) EVAP system.
- Knock sensor: A scan tool can detect if a knock sensor, which helps prevent engine knocking, is malfunctioning by reading the error codes related to it.
- EVR solenoid: The Exhaust Gas Recirculation (EGR) solenoid can also be diagnosed using a scan tool. The tool reads trouble codes related to the EGR system to determine any faults.
- EVAP system: The Evaporative Emission Control (EVAP) system, which manages fuel vapors from the fuel tank, is another component that can be checked with a scan tool. It helps identify leaks or faults within the system.
So, a scan tool is versatile and can diagnose issues across multiple vehicle systems.
