OBD-II Generic P0492: How to Fix Secondary Air Injection Insufficient Flow B2

Q: Can I drive with error code P0492?

Yes, but it may cause increased emissions and could lead to failed smog checks. It's best to fix it promptly to avoid other issues.

Q: How much does it cost to fix code P0492?

Costs vary widely: a vacuum hose repair may cost $20-50, while replacing a secondary air pump can be $200-500, including labor.

Q: What does Bank 2 mean?

Bank 2 refers to the side of the engine that does not contain cylinder #1. For V-shaped engines, it is the opposite side; for inline engines, Bank 2 may not exist.

Q: Will clearing the code fix P0492 permanently?

No, clearing the code only turns off the check engine light temporarily. The code will return if the underlying issue is not repaired.

Abstract

The P0492 error code indicates that the secondary air injection system on Bank 2 is not flowing enough air to properly reduce emissions during cold starts. This can cause your check engine light to come on and may lead to increased emissions or failed smog tests.