OBD-II Generic Error Code P0415: How to Fix It

Q: Can I still drive my car with a P0415 code?

Yes, you can usually drive, but you may fail an emissions test. In some cases, it can affect engine performance during cold starts. It's best to fix it promptly.

Q: How much does it cost to fix P0415?

If it's a simple wiring fix, it could be free (DIY) or up to $100 at a shop. If the valve needs replacement, parts cost $50-200, plus labor. A new secondary air pump may cost $200-500.

Q: Is P0415 the same as P0410?

No. P0410 refers to the secondary air injection system malfunction overall, while P0415 is specific to the valve B circuit.

Q: What causes P0415?

Common causes include a faulty secondary air injection valve, damaged wiring or connectors, a blown fuse, or a defective secondary air pump.

Abstract

Error code P0415 indicates a problem in the electrical circuit of the secondary air injection valve B. This system pumps fresh air into the exhaust to reduce emissions during cold starts. A faulty valve or wiring issue can trigger this code and may affect your vehicle's emissions test.