Credov

P1456 fault code: what it means

P1456: Honda code: EVAP leak on the fuel tank side (fuel cap, filler neck, tank). A CHECK FUEL CAP message may show first.

Engine and gearbox (powertrain) · Minor

Usual causes, most likely first

  1. loose, wrong or worn fuel cap
  2. fuel filler neck leak
  3. leaking fuel tank seal or hose

P1456 by make

Honda

Honda code: EVAP leak on the fuel tank side (fuel cap, filler neck, tank). A CHECK FUEL CAP message may show first.

Usual causes: loose, wrong or worn fuel cap; fuel filler neck leak; leaking fuel tank seal or hose

Not sure what P1456 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.