P0456 on Ford Fusion
EVAP System Leak Detected (very small leak)
Methodology: Reviewed against the SAE J2012 generic DTC definition and NHTSA owner-complaint patterns, then scoped to Ford Fusion context without treating complaints as confirmed diagnoses.
Sources: SAE/OBD-II definitions, manufacturer service information, and public reliability reports (including NHTSA where applicable).
- SAE J2012 Diagnostic Trouble Code Definitions — Generic diagnostic trouble code definition reference for P0456.
- NHTSA recalls, complaints, and manufacturer communications — Used to check public owner complaint context, recall status, and safety-related manufacturer communications by VIN or vehicle.
Limits: Guidance is informational and may not match every model-year or revision. Confirm with the official manual and diagnostics before replacing parts. For safety-critical or electrical work, use a qualified technician.
What P0456 Means on Your Ford Fusion
P0456 is a diagnostic trouble code indicating: EVAP System Leak Detected (very small leak). This code relates to the emission controls system. The vehicle's computer detected a condition outside normal operating parameters and stored this code.
Real Ford Fusion Owner Reports
Source: NHTSA Complaints Database
"When i purchased the vehicle at 43,000 miles a check fuel fill inlet warning appeared. i main tended the inlet system and the warning and check engine light would disappear. as time went on i noticed that when i would merge onto a busy highway, my car would barely move."
"My 2010 fusion car had been using quite a bit of gas, the check engine symbol came on, . i took my car to the dealer and was told i needed to replace the evap canister and the purge valve for 800.00 as i had p0456 code, and a p2169 code and has raw fuel leakage."
"My 2010 fusion has experienced multiple issues with the check engine light. it is always the same pcm code of p0456 which deals with evaporative emissions system."
"Purge valve failure, ford claims they could not provide the part when requested."
"Recall code p0456 was repaired by dealer. sent back to dealer to be told they gave me a faulty part. code comes back on, so i sent car to different dealer for repair. it was repaired but now code cane back on for the 3rd time now. code is on now after repaired a week ago."
All reports filed by vehicle owners directly with the U.S. Department of Transportation.
📊 Complaint Trend by Model Year
Common Causes on Ford Fusion
Based on NHTSA complaint component analysis for this vehicle.
What To Do Next
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1
Check for recalls on YOUR VIN
Go to nhtsa.gov/recalls and enter your VIN. If your vehicle is covered, repairs are free.
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2
Get a proper diagnosis
A code alone doesn't tell you the exact failed part. A diagnostic at a shop ($50–$150) pinpoints the root cause before you spend money on parts.
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3
Compare repair quotes
Get 2–3 quotes. Dealer vs. independent shop prices often differ 30–50% for the same repair.