Credov

P2404 fault code: what it means

P2404: EVAP leak detection pump sense circuit makes no sense. No drivability change.

Engine and gearbox (powertrain) · Minor

Usual causes, most likely first

  1. faulty leak detection pump (V144)
  2. pump supply voltage fault

P2404 by make

Audi

EVAP leak detection pump sense circuit makes no sense. No drivability change.

Usual causes: faulty leak detection pump (V144); pump supply voltage fault

Porsche

EVAP leak detection pump sense circuit out of range.

Usual causes: system leak or blockage; faulty leak detection pump; short to positive in signal line

Skoda

EVAP leak detection pump sense circuit makes no sense. No drivability change.

Usual causes: faulty leak detection pump (V144); pump supply voltage fault

Volkswagen

EVAP leak detection pump sense circuit makes no sense. No drivability change.

Usual causes: faulty leak detection pump (V144); pump supply voltage fault

Not sure what P2404 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.