# P0456 on the 2019 Jeep Renegade

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

- [10239925](https://open.wenmarpro.com/bulletins/10239925), 2023-07-31: Flash: Powertrain Control Module \(PCM\) Updates Customers may experience the following: ? Engine Stop/Start does not work as expected and it is often automatically deactivated. Customers may also experience a Malfunction Indicator Lamp \(MIL\) illumination. Upon further investigation the technician may find one or more of the following Diagnostic Trouble Codes \(DTCs\): ? P2110 \- Electronic Throttle Control System Bank 1 \- Forced Limited RPM. ? P2173 \- High Airflow/Vacuum Leak Detected \(Slow Accumulation\). ? U0100 \- Lost Communication With ECM/PCM. ? 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. ? P1CEA \- Boost Side EVAP Purge System Performance. In addition, the customer may also experience the following: ? The vehicle will not crank if the ECM gets hotter than 50 °C \(122 °F\). ? Intermittent no\-crank when first starting the vehicle. The following DTC has been changed from a one trip fault to a two trip fault: ? P0607 \- ECU Internal Performance. 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
- [10231787](https://open.wenmarpro.com/bulletins/10231787), 2023-02-13: Flash: Powertrain Control Module \(PCM\) Updates \*\*Customers may experience the following: Stop/start function deactivated.\*\*Customers may also experience a Malfunction Indicator Lamp \(MIL\) illumination. Upon further investigation the technician may find the following Diagnostic Trouble Code \(DTC\): P2110 \- Electronic Throttle Control System Bank 1 \- Forced Limited RPM. P2173 \- High Airflow/Vacuum Leak Detected \(Slow Accumulation\). U0100 \- Lost Communication With ECM/PCM. 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. P1CEA \- Boost Side EVAP Purge System Performance. In addition, the customer may also experience the following: The vehicle will not crank if the ECM gets hotter than 50 °C \(122 °F\). Intermittent no\-crank when first starting the vehicle. The following DTC has been changed from a one trip fault to a two trip fault: P0607 \- ECU Internal Performance. This bulletin involves reprogramming the PCM with the latest available software.
- [10221202](https://open.wenmarpro.com/bulletins/10221202), 2022-09-26: 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 one or more ofthe following DTCs have been set: P2110 \- Electronic Throttle Control System Bank 1 \- Forced Limited RPM. P2173 \- High Airflow/Vacuum Leak Detected \(Slow Accumulation\). U0100 \- Lost Communication With ECM/PCM. 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. P1CEA \- Boost Side EVAP Purge System Performance. In addition, the customer may also experience the following: The vehicle will not crank if the ECM gets hotter than 50 °C \(122°F\). Intermittent no\-crank when first starting the vehicle. The following Diagnostic Trouble Codes \(DTCs\) have been changed from a one trip fault to a two trip fault: P0607 \- ECU Internal Performance.
- [10220071](https://open.wenmarpro.com/bulletins/10220071), 2022-09-15: wiTECH Small Leak Verification Test \(SLVT\) \- P0456\-EVAP SYSTEM SMALL LEAK
- [10194055](https://open.wenmarpro.com/bulletins/10194055), 2021-05-24: 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 one or more ofthe following DTCs have been set: P2110 \- Electronic Throttle Control System Bank 1 \- Forced Limited RPM. P2173 \- High Airflow/Vacuum Leak Detected \(Slow Accumulation\). U0100 \- Lost Communication With ECM/PCM. 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. P1CEA \- Boost Side EVAP Purge System Performance. In addition, the customer may also experience the following: The vehicle will not crank if the ECM gets hotter than 50 °C \(122°F\). Intermittent no\-crank when first starting the vehicle. The following Diagnostic Trouble Codes \(DTCs\) have been changed from a one trip fault to a two trip fault: P0607 \- ECU Internal Performance.
- [10176583](https://open.wenmarpro.com/bulletins/10176583), 2020-06-22: 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 one or more of the following DTCs have been set:U0100 \- Lost Communication With ECM/PCM. 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. P1CEA \- Boost Side EVAP Purge System Performance. In addition, the customer may also experience the following: The vehicle will not crank if the ECM gets hotter than 50 °C \(122 °F\). Intermittent no\-crank when first starting the vehicle.
- [10175588](https://open.wenmarpro.com/bulletins/10175588), 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 one or more ofthe following DTCs have been set:U0100 \- Lost Communication With ECM/PCM. P0456 \- EVAP System Small Leak. P1CEA \- Boost Side EVAP Purge System Performance. In addition, the customer may also experience the following:The vehicle will not crank if the ECM gets hotter than 50 °C \(122°F\). Intermittent no\-crank when first starting the vehicle.
- [10175175](https://open.wenmarpro.com/bulletins/10175175), 2020-05-18: 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 one or more ofthe following DTCs have been set:U0100 \- Lost Communication With ECM/PCM. P0456 \- EVAP System Small Leak. P1CEA \- Boost Side EVAP Purge System Performance. In addition, the customer may also experience the following:The vehicle will not crank if the ECM gets hotter than 50 °C \(122°F\). Intermittent no\-crank when first starting the vehicle.
- [10174255](https://open.wenmarpro.com/bulletins/10174255), 2020-04-27: 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 one or more ofthe following DTCs have been set:U0100 \- Lost Communication With ECM/PCM. P0456 \- EVAP System Small Leak. P1CEA \- Boost Side EVAP Purge System Performance. In addition, the customer may also experience the following:The vehicle will not crank if the ECM gets hotter than 50 °C \(122°F\). Intermittent no\-crank when first starting the vehicle.