Question

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

a. p0455
b. p0410
c. p0416
d. p0473

Explanation:

• P0455: This Diagnostic Trouble Code (DTC) is specifically associated with a large leak in the EVAP (Evaporative Emission Control) system.
• P0410: This code is related to the secondary air injection system, not the EVAP system leak.
• P0416: This code pertains to the secondary air injection system's switching valve, not an EVAP leak.
• P0473: This code is for the exhaust pressure sensor circuit, not relevant to an EVAP system large - leak detection.

Answer:

A. P0455