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P043F fault code: what it means

P043F: EVAP leak detection reference orifice high flow: the canister pump module self-test failed, usually a faulty module.

Engine and gearbox (powertrain) · Minor

Usual causes, most likely first

  1. failed canister pump module
  2. damaged reference orifice or hose

P043F by make

Toyota

EVAP leak detection reference orifice high flow: the canister pump module self-test failed, usually a faulty module.

Usual causes: failed canister pump module; damaged reference orifice or hose

Not sure what P043F 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.