P0456 on Nissan vehicles A very small leak in the evaporative emissions system

A model year is listed because the code is named in its own record — a bulletin filed against it, or an owner’s complaint about it — not because every one of these vehicles sets it. Counts are documents in NHTSA’s files, not failure rates.

Bulletins and campaigns Nissan filed with NHTSA whose summary names P0456. Quote the document number at the service desk — it is a diagnosis the maker has already written down.

• NTB13-097D Service bulletin
  2016-08-04 · Equipment — Other — Owners/Service/Other Manual
• "ALL MODEL YEAR 2012 AND NEWER NISSAN VEHICLES; EVAP LEAK DTC P0442, P0455, P0456 INFORMATION THIS BULLETIN HAS BEEN AMENDED. THE TITLE HAS BEEN REVISED, AND THE BULLETIN NOW INCLUDES VEHICLES IN PRODUCTION AS OF THE DATE OF THIS UPDATE. NO OTHER CHANGES HAVE BEEN MADE. PLEASE DISCARD ALL PREVIOUS VERSIONS OF THIS BULLETIN."
• NTB13-097g Service bulletin
  2019-01-29 · Fuel System, Gasoline
• ALL MODEL YEAR 2012 AND NEWER NISSAN VEHICLES; EVAP LEAK DTC P0442, P0455, P0456 INFORMATION This bulletin does NOT apply to LEAF vehicles and Titan XD vehicles with V8 diesel engine. This bulletin has been amended. See Amendment History on the last page. Please discard previous versions of this bulletin.
• NTB17-082b Service bulletin
  2019-01-29 · Engine And Engine Cooling
• NISSAN; DTC P0456 CAUSED BY EVAP LEAK AT VENT CONTROL VALVE O-RING This bulletin does NOT apply to LEAF vehicles and Titan XD vehicles with V8 diesel engine. This bulletin has been amended. See Amendment History on the last page. Please discard previous versions of this bulletin.
• NTB13-097J Service bulletin
  2022-02-07 · Fuel System, Other
• EVAP LEAK DTC P0442, P0455, P0456 INFORMATION This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
• NTB17-082a Service bulletin
  2017-08-21 · Service Brakes, Air — Supply — Check Valve
• NISSAN; DTC P0456 CAUSED BY EVAP LEAK AT VENT CONTROL VALVE O-RING This bulletin has been amended. The APPLIED VEHICLES and CLAIMS INFORMATION sections have been revised. No other changes have been made. Please discard previous versions of this bulletin.
• NTB17-082E Service bulletin
  2022-02-07 · Fuel System, Other
• DTC P0456 CAUSED BY EVAP LEAK AT VENT CONTROL VALVE O-RING This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
• NTB17-082 Service bulletin
  2017-07-21 · Equipment — Recreational Vehicle/Trailer — Lpg Systems — Tank Valve/Gauge
• NISSAN; DTC P0456 CAUSED BY EVAP LEAK AT VENT CONTROL VALVE O-RING IF YOU CONFIRM The MIL is ON in an APPLIED VEHICLE with DTC P0456 (EVAP VERY SML LEAK) AND - DTC P0456 is not caused by a loose fuel fill cap (refer to NTB13-097). - An EVAP leak has been detected where the vent control valve mounts to the canister. - The vent control valve O-ring seal is determined to be the cause. ACTION
• NTB26-006 Service bulletin
  2026-02-02 · Fuel/Propulsion System
• FUEL FILLER TUBE LOWER SEAL IS LEAKING AND DTC P0456 IS STORED IN THE ECM IF YOU CONFIRM The vehicle has a visible leak with a smoke machine test coming from the fuel filler tube lower seal, AND DTC P0456 is stored as “Active”, “Past”, or “Pending” in the ECM. ACTION 1. Remove the supplied funnel from the rear of the vehicle or trunk. 2. Insert the funnel completely in the fuel filler tube and rem
• NTB26-006A Service bulletin
  2026-05-01 · Fuel/Propulsion System
• FUEL FILLER TUBE LOWER SEAL IS LEAKING AND DTC P0456 IS STORED IN THE ECM This bulletin is no longer active. Please discard previous versions of NTB26-006.

A stored code names the test that failed, never the part that caused it. The record above is what Nissan and its owners have filed about it; the code’s page across every make has the whole file.