Question

what dtc will be set by the pcm if the ecm detects a small leak in the evap system?

a. p0456
b. p0411
c. p0417
d. p0474

Explanation:

• Diagnostic Trouble Codes (DTCs) are used to identify problems in a vehicle's systems.
• For the EVAP (Evaporative Emission) system, specific codes are assigned for different issues.
• Code P0456 is specifically for a small leak in the EVAP system.
• Code P0411 is related to the secondary air injection system.
• Code P0417 is for a secondary air injection system (air pump) circuit malfunction.
• Code P0474 is for an exhaust pressure control valve performance issue.

Answer:

A. P0456