p1457
Moderate
Honda · Sedans
EVAP Emission Control System Leakage - EVAP Canister System
Quick Answer
Error code P1457 on your Honda Sedans means: EVAP Emission Control System Leakage - EVAP Canister System. This is usually fixable — see the step-by-step guide below.
Affected Models
Applies to all models
CV3CV4FC1FC4FE1FL5ZC5Accord EX 2024Accord EX-L 2024Accord Hybrid EX-L 2024Accord Hybrid Sport 2024Accord Hybrid Touring 2024Accord LX 2024Accord Sport 2024Accord Touring 2024Civic EX 2024Civic Hybrid Sport 2025Civic Hybrid Sport Touring 2025Civic LX 2024Civic Si 2024Civic Sport 2024Civic Touring 2024Civic Type R 2024ZE4
Likely Causes
How to Fix It
1
Perform a smoke test on the EVAP system starting from the charcoal canister
2
Inspect all EVAP hoses and connections near the canister for cracks, dry rot, or loose clamps
3
Test the canister vent shut valve for proper operation by applying vacuum; it should hold vacuum when energized
4
Check the charcoal canister for fuel saturation (often caused by overfilling the fuel tank)
5
Inspect the fuel filler neck and cap for cracks or damage
Pro Tip
This fix requires some technical knowledge. If you're unsure about any step, consider contacting support or a qualified technician.
Parts You May Need
EVAP canister vent shut valve
Charcoal canister
EVAP hoses and clamps
Fuel filler cap
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