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P1411 fault code: what it means

P1411: Secondary air injection bank 2 flow too low. Cold-start emissions only.

Engine and gearbox (powertrain) · Minor

Usual causes, most likely first

  1. failed secondary air pump
  2. stuck combi valve
  3. collapsed vacuum hose
  4. pump fuse blown

P1411 by make

Audi

Secondary air injection bank 2 flow too low. Cold-start emissions only.

Usual causes: failed secondary air pump; stuck combi valve; collapsed vacuum hose; pump fuse blown

Porsche

Secondary air injection bank 2 below limit. Often logged with P0410; same parts to check.

Usual causes: secondary air pump not running; faulty air or electric change-over valve; vacuum leak; restricted air lines

Volkswagen

Secondary air injection bank 2 flow too low. Cold-start emissions only.

Usual causes: failed secondary air pump; stuck combi valve; collapsed vacuum hose; pump fuse blown

What the repair usually costs

Not sure what P1411 means on your car? Ask Credov.

Before you clear it

Write the code down or photograph the scanner first. A code that comes straight back after clearing points to a fault that is still there. A car whose codes were cleared just before you arrived may be hiding one: the scanner's readiness monitors show "not ready" for a while after codes are cleared.

Researched by Credov from manufacturer and workshop sources. A fault code points to where a fault may be; a workshop confirms it with a diagnosis. Browse all fault codes.