Which EVAP code indicates a large leak?

Which EVAP code indicates a large leak?

• A. P0440.
• B. P0442.
• C. P0455.
• D. P0441.

Answer: (C)

In the EVAP system, the onboard computer measures leaks and categorizes them by size. A large, or gross, leak creates a significant pressure drop that the system flags as a large-leak fault. That specific code is used to indicate a substantial breach in the EVAP system, hence it’s the best answer for “a large leak.” Other codes correspond to different issues: a general EVAP malfunction, a purge-flow problem, or a very small leak. So they’re not describing a large leak, which is why the large-leak code is the correct choice.

In the EVAP system, the onboard computer measures leaks and categorizes them by size. A large, or gross, leak creates a significant pressure drop that the system flags as a large-leak fault. That specific code is used to indicate a substantial breach in the EVAP system, hence it’s the best answer for “a large leak.”

Other codes correspond to different issues: a general EVAP malfunction, a purge-flow problem, or a very small leak. So they’re not describing a large leak, which is why the large-leak code is the correct choice.