Hybspec

P0411

Średni

Secondary Air System — Incorrect Flow (VAG)

OBD-II (EN): Secondary Air Injection System Incorrect Flow Detected

Code P0411 — Secondary Air System — Incorrect Flow (VAG). Symptoms: check engine light after cold start. Possible cause: faulty secondary air pump (common problem in 1.8T/2.0 TFSI). Professional diagnosis recommended.

Symptoms

Check engine light after cold start, noise from secondary air pump

Possible causes

Faulty secondary air pump (common problem in 1.8T/2.0 TFSI), stuck combi valve, blocked hose, component corrosion

Affected systems

Silnik spalinowyUkład wydechowy

Related codes

Does code P0411 require professional diagnostics?

The code alone is not enough. To find the cause, you need to read live data, check freeze frame conditions, and compare with vehicle behavior. Book a diagnostic session.