# P0456 on the 2020 Hyundai Sonata

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

- [10177134](https://open.wenmarpro.com/bulletins/10177134), 2020-07-08: This service campaign information is related to an Electronic Control Module \(ECM\) software update to revise the logic for DTC P030X: Cylinder “X” Misfire Detected and P0456: EVAP System Leakage Detected – Very Small Leak. This Service Campaign T5A will replace Service Campaign T4N.
- [10177133](https://open.wenmarpro.com/bulletins/10177133), 2020-07-08: This bulletin provides information related to an Electronic Control Module \(ECM\) software update to revise the logic for DTC P030X: Cylinder “X” Misfire Detected and P0456: EVAP System Leakage Detected – Very Small Leak.
- [10172146](https://open.wenmarpro.com/bulletins/10172146), 2020-03-06: This service campaign provides information related to an ECM software update to revise the logic for DTC P0456: EVAP System Leakage Detected Very Small Leak.
- [10172145](https://open.wenmarpro.com/bulletins/10172145), 2020-03-06: This bulletin provides information related to an Electronic Control Module \(ECM\) software update to revise the logic for DTC P0456: EVAP System Leakage Detected Very Small Leak.