P0456 on NISSAN SENTRA — EVAP System Leak Detected (very small leak)

Q: "What does P0456 mean on a NISSAN SENTRA?"

"P0456 indicates: EVAP System Leak Detected (very small leak). This is a emission controls code. 2 NISSAN SENTRA owners have reported this to NHTSA."

Q: "What are the most common causes of P0456 on NISSAN SENTRA?"

"Based on 2 NHTSA reports, the most commonly cited components are: Engine, Fuel/Propulsion System. These percentages are based on the component field in owner complaints."

Q: "Is P0456 serious on my NISSAN SENTRA?"

"Of 2 NHTSA reports for this code on NISSAN SENTRA, none involved a crash or fire. However, any diagnostic code should be evaluated by a qualified mechanic."

Q: "What should I do if my NISSAN SENTRA 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 NISSAN SENTRA

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.

2 NISSAN SENTRA owners have reported this issue to NHTSA across model years 2013-2015. Most reports come from the 2013, 2015 model years. The most commonly reported component is Engine (50.0% of reports).

Real NISSAN SENTRA Owner Reports

Source: NHTSA Complaints Database

"Tl* the contact owns a 2013 nissan sentra. the contact stated that the check engine light illuminated and remained illuminated. the contact also stated that an odor of fuel was sometimes perceived."

— 2013 NISSAN SENTRA owner · ENGINE · Filed 05/09/2019

"Starting on 1/23/19 then again 3/26/19 and on 4/17/19 code p0456 keeps coming on and i have also replaced gas cap still doing it. this has to be a recall of some kind."

— 2015 NISSAN SENTRA owner · FUEL/PROPULSION SYSTEM · Filed 01/23/2019

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

📊 Complaint Trend by Model Year

1

'13

1

'15

Common Causes on NISSAN SENTRA

Based on NHTSA complaint component analysis for this vehicle.

ENGINE 50%

FUEL/PROPULSION SYSTEM 50%

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 NISSAN SENTRA? ▾

P0456 indicates: EVAP System Leak Detected (very small leak). This is a emission controls code. 2 NISSAN SENTRA owners have reported this to NHTSA.

What are the most common causes of P0456 on NISSAN SENTRA? ▾

Based on 2 NHTSA reports, the most commonly cited components are: Engine, Fuel/Propulsion System. These percentages are based on the component field in owner complaints.

Is P0456 serious on my NISSAN SENTRA? ▾

Of 2 NHTSA reports for this code on NISSAN SENTRA, none involved a crash or fire. However, any diagnostic code should be evaluated by a qualified mechanic.

What should I do if my NISSAN SENTRA 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.