# P0456 on the 2011 Kia Optima

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

- [10186044](https://open.wenmarpro.com/bulletins/10186044), 2021-02-02: TECHNICAL SERVICE BULLETIN: COMBINATION TSB / SERVICE ACTION: AIR FILTER AND NVLD REPLACEMENT \(SA447\) \- This bulletin provides the procedure to perform an evaporative leak test and replace the Fuel Tank Air Filter, and, if necessary, the Natural Vacuum Leak Detector \(NVLD\) on some 11\-16MY Kia vehicles listed in the table below, which may experience an evaporative leak concern with DTC P0456.
- [10109813](https://open.wenmarpro.com/bulletins/10109813), 2017-08-02: PITSTOP: MANUAL EVAPORATIVE EMISSIONS TEST FOR HARD TO FIND/SMALL LEAKS \- If the malfunction indicator lamp \(MIL\) is illuminated with DTC\(s\) P0442, P0455, P0456, or P0457 \(Evaporative Emissions System\-Leak detected\) and the evaporative \(EVAP\) leak self\-test resulted in NTF, a manual EVAP test is recommended.
- [10109658](https://open.wenmarpro.com/bulletins/10109658), 2017-08-02: PIT STOP: DTC P0456 AND CHARCOAL CANISTER LEAKS \- When addressing a concern related to a DTC P0456 \(Evaporative Emissions System ? Small Leak Detected\), and an inspection of the vapor lines, connections and fuel cap reveal no abnormalities, closely inspect the mounting holes of the charcoal canister for visible cracks.