# P0456 on the 2019 Chrysler 300

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

- [11012184](https://open.wenmarpro.com/bulletins/11012184), 2025-01-03: "Flash: Powertrain Control Module \(PCM\) Updates Customers must experience a Malfunction Indicator Lamp \(MIL\) illumination and the vehicle must exhibit/set one or more of the following Diagnostic Trouble Codes \(DTCs\): ● \*\*P0420 \- Catalyst System Efficiency Below Threshold Bank 1. ● P0430 \- Catalyst System Efficiency Below Threshold Bank 2.\*\* ● P0456 \- EVAP System Small Leak. NOTE: If DTC P0456 is present use the wiTECH Small Leak Verification test \(SLVT\) to determine if a leak is present in the system. This bulletin involves reprogramming the PCM with the latest available software."
- [10236933](https://open.wenmarpro.com/bulletins/10236933), 2023-05-30: wiTECH Small Leak Verification Test \(SLVT\) \- P0456\-EVAP SYSTEM SMALL LEAK
- [10220071](https://open.wenmarpro.com/bulletins/10220071), 2022-09-15: wiTECH Small Leak Verification Test \(SLVT\) \- P0456\-EVAP SYSTEM SMALL LEAK
- [10175732](https://open.wenmarpro.com/bulletins/10175732), 2020-05-26: Flash: Powertrain Control Module \(PCM\) Updates This bulletin involves reprogramming the PCM with the latest available software. Customers may experience a Malfunction Indicator Lamp \(MIL\) illumination. Upon further investigation the technician may find that the followingDiagnostic Trouble Code \(DTC\) has been set:P0456 \- EVAP System Small Leak.If DTC P0456 is present use the wiTECH Small Leak Verification Test \(SLVT\) to determine if a leak is present in the system. Customers may also experience the following:Noise heard from the drivetrain while stationary and vehicle is in Sport/Track modes.
- [10169219](https://open.wenmarpro.com/bulletins/10169219), 2019-12-16: wiTECH Small Leak Verification Test \(SLVT\) \- P0456\-EVAP SYSTEM SMALL LEAK
- [10168500](https://open.wenmarpro.com/bulletins/10168500), 2019-12-02: Flash: Powertrain Control Module \(PCM\) Updates This bulletin involves reprogramming the PCM with updated software. Customers may experience a Malfunction Indicator Lamp \(MIL\) illumination. Upon further investigation the technician may find that the following Diagnostic Trouble Code \(DTC\) has been set: P0456 \- EVAP System Small Leak.If DTC P0456 is present use the wiTECH Small Leak Verification test \(SLVT\) to determine if a leak is present in the system.Perform this software flash only on vehicles with less than 57 miles on the odometer.
- [10168480](https://open.wenmarpro.com/bulletins/10168480), 2019-12-02: Flash: Powertrain Control Module \(PCM\) Updates This bulletin involves reprogramming the PCM with the latest available software. Customers may experience a Malfunction Indicator Lamp \(MIL\) illumination. Upon further investigation the technician may find that the following Diagnostic Trouble Code \(DTC\) has been set: P0456 \- EVAP System Small Leak.