p0456
Easy Fix
Ford · SUVs
Evaporative Emission System Very Small Leak Detected
Quick Answer
Error code P0456 on your Ford SUVs means: Evaporative Emission System Very Small Leak Detected. This is usually fixable — see the step-by-step guide below.
Affected Models
Applies to all models
BRNCOBRNCSEDGEESCPEEXPDNEXPLREXPLRHBronco Badlands 2024Bronco Base 2024Bronco Big Bend 2024Bronco Raptor 2024Bronco Sport Badlands 2024Bronco Sport Base 2024Bronco Sport Big Bend 2024Bronco Wildtrak 2024Escape Active 2024Escape Platinum 2024Escape ST-Line 2024Expedition King Ranch 2024Expedition Limited 2024Expedition Platinum 2024Expedition XLT 2024Explorer Base 2024Explorer Limited 2024Explorer Platinum 2024Explorer ST 2024Explorer XLT 2024MACHE
Likely Causes
How to Fix It
1
Remove fuel cap, inspect the seal, and reinstall or replace
2
Perform an EVAP smoke test to pinpoint the leak location
3
Inspect all EVAP hoses and connections for cracks or loose clamps
4
Check the EVAP charcoal canister for cracks
5
Inspect the fuel filler neck for corrosion or cracks
Pro Tip
This is a common issue that most users can resolve without specialized tools. Try the first step before moving on to more complex solutions.
Parts You May Need
Fuel cap
EVAP hoses
EVAP canister
Vent valve
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