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P1457 fault code: what it means

P1457: Honda code: EVAP leak on the charcoal canister side. Very common; the canister vent shut valve rusts and cracks.

Engine and gearbox (powertrain) · Minor

Usual causes, most likely first

  1. rusted or cracked EVAP canister vent shut valve
  2. cracked EVAP canister
  3. leaking EVAP hose
  4. purge or bypass valve

P1457 by make

Honda

Honda code: EVAP leak on the charcoal canister side. Very common; the canister vent shut valve rusts and cracks.

Usual causes: rusted or cracked EVAP canister vent shut valve; cracked EVAP canister; leaking EVAP hose; purge or bypass valve

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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.