P0456 on FORD FUSION — EVAP System Leak Detected (very small leak)

Q: "What does P0456 mean on a FORD FUSION?"

"P0456 indicates: EVAP System Leak Detected (very small leak). This is a emission controls code. 9 FORD FUSION owners have reported this to NHTSA."

Q: "What are the most common causes of P0456 on FORD FUSION?"

"Based on 9 NHTSA reports, the most commonly cited components are: Engine,Fuel/Propulsion System, Fuel/Propulsion System, Power Train,Electrical System,Vehicle Speed Control. These percentages are based on the component field in owner complaints."

Q: "Is P0456 serious on my FORD FUSION?"

"Of 9 NHTSA reports for this code on FORD FUSION, none involved a crash or fire. However, any diagnostic code should be evaluated by a qualified mechanic."

Q: "What should I do if my FORD FUSION shows P0456?"

"1) Check for recalls on your VIN at nhtsa.gov/recalls. 2) Get a professional diagnosis — a code alone doesn't identify the exact failed part. 3) Get 2-3 repair estimates to compare."

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.

9 FORD FUSION owners have reported this issue to NHTSA across model years 2010-2020. Most reports come from the 2010, 2011 model years.

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."

— 2010 FORD FUSION owner · POWER TRAIN,ELECTRICAL SYSTEM,VEHICLE SPEED CONTROL · Filed 05/16/2012

"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."

— 2010 FORD FUSION owner · ENGINE · Filed 01/17/2014

"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."

— 2010 FORD FUSION owner · FUEL SYSTEM, GASOLINE · Filed 06/05/2011

"Purge valve failure, ford claims they could not provide the part when requested."

— 2011 FORD FUSION owner · ENGINE,FUEL/PROPULSION SYSTEM · Filed 02/27/2022

"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."

— 2011 FORD FUSION owner · UNKNOWN OR OTHER · Filed 09/23/2020

All reports filed by vehicle owners directly with the U.S. Department of Transportation.

📊 Complaint Trend by Model Year

3

'10

3

'11

2

'19

1

'20

Common Causes on FORD FUSION

Based on NHTSA complaint component analysis for this vehicle.

ENGINE,FUEL/PROPULSION SYSTEM 22.2%

FUEL/PROPULSION SYSTEM 22.2%

POWER TRAIN,ELECTRICAL SYSTEM,VEHICLE SPEED CONTROL 11.1%

ENGINE 11.1%

FUEL SYSTEM, GASOLINE 11.1%

What To Do Next

1
Check for recalls on YOUR VIN
Go to nhtsa.gov/recalls and enter your VIN. If your vehicle is covered, repairs are free.
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.
3
Compare repair quotes
Get 2–3 quotes. Dealer vs. independent shop prices often differ 30–50% for the same repair.

Frequently Asked Questions

What does P0456 mean on a FORD FUSION? ▾

P0456 indicates: EVAP System Leak Detected (very small leak). This is a emission controls code. 9 FORD FUSION owners have reported this to NHTSA.

What are the most common causes of P0456 on FORD FUSION? ▾

Based on 9 NHTSA reports, the most commonly cited components are: Engine,Fuel/Propulsion System, Fuel/Propulsion System, Power Train,Electrical System,Vehicle Speed Control. These percentages are based on the component field in owner complaints.

Is P0456 serious on my FORD FUSION? ▾

Of 9 NHTSA reports for this code on FORD FUSION, none involved a crash or fire. However, any diagnostic code should be evaluated by a qualified mechanic.

What should I do if my FORD FUSION shows P0456? ▾

1) Check for recalls on your VIN at nhtsa.gov/recalls. 2) Get a professional diagnosis — a code alone doesn't identify the exact failed part. 3) Get 2-3 repair estimates to compare.