# P0456 on the 2007 Nissan Altima

The bulletins listed name this code in NHTSA's summary, or are about the same components. A bulletin or a recall listed here may apply to the model year. None of it is a diagnosis.

Nobody has written a description of this code yet.

## Bulletins for this model year that name P0456

- [10192266](https://open.wenmarpro.com/bulletins/10192266), 2021-05-10: SERVICE INFORMATION If one or more of these EVAP leak DTCs are stored \(P0442, P0455, P0456\) on a 2007 through 2011 Nissan vehicle, a loose fuel fill cap may be the cause. Use the following resources to perform diagnostics and confirm the cause of stored DTCs. ASIST: \- Appropriate Service Manual diagnostic procedures \- Applicable Technical Service Bulletins \(TSB\). Leak Test: \- With CONSULT\-III plus \- WORK SUPPORT \>\> EVAP SYSTEM CLOSE. NOTE: Use Essential Tool J\-42909 or equivalent to pressurize the EVAP system. \- With a "Smoke" leak detection machine. Refer to the machine's Operator's Manual for proper use. Make sure the customer is informed of the proper fuel filler cap installation.
- [10120566](https://open.wenmarpro.com/bulletins/10120566), 2017-10-25: 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 1. DO NOT REPLACE the vent control valve. 2. Replace the vent control valve O\-ring seal \(O\-ring\). \- Refer to SERVICE PROCEDURE on page 2.
- [10119249](https://open.wenmarpro.com/bulletins/10119249), 2017-10-15: 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.
- [10053956](https://open.wenmarpro.com/bulletins/10053956), 2013-12-07: NISSAN: A LOOSE FUEL FILL CAP IS THE CAUSE OF EVAP LEAK DTCS \(P0442, P0455, P0456\) STORED ON SOME VEHICLES. MODEL YEARS 2007\-2011. MODEL NOT LISTED. \*PE
- [10032964](https://open.wenmarpro.com/bulletins/10032964), 2010-06-18: NISSAN: THE MIL IS ON WITH ONE OR MORE OF THE FOLLOWING DTCS STORED: P0442/P0448/P0455/P0456 AND EVAP VENT CONTROL VALVE IS STUCK OPEN OR WILL NOT SEAL WHEN OPERATED/CLOSED. REPLACE VENT CONTROL VALVE; INSTALL FILTER KIT LISTED IN PARTS INFORMATION; AND CLEAR ANY DTCS STORED IN THE ECM. \*PE UPDATED 6/15/11. \*PE