# P0456 on the 2015 Jeep Compass

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

- [10236933](https://open.wenmarpro.com/bulletins/10236933), 2023-05-30: wiTECH Small Leak Verification Test \(SLVT\) \- P0456\-EVAP SYSTEM SMALL LEAK
- [10224647](https://open.wenmarpro.com/bulletins/10224647), 2022-10-24: Flash: Powertrain Diagnostic And System Enhancements This bulletin involves reprogramming the Powertrain Control Module \(PCM\) with new software. A small number of customers may experience a Malfunction Indicator Lamp \(MIL\) illumination. Upon further investigation the technician may find the following Diagnostic Trouble Codes \(DTCs\) set in the PCM memory: \*\*P0335 \- Crankshaft Position Sensor Circuit. P0456 \- Evap System Small Leak.\*\* P219A \- Bank 1 Air Fuel Ratio Imbalance. P050B \- Cold Start Ignition Timing Performance. Other software enhancements included that will address some customers concerns: · \*\*Cruise control acceleration rate may be considered objectionable to some customers if the accel button is held down. · Engine is hard to start at temperatures \-29°C \(\-20°F\) for vehicles utilizing E15 fuel only.\*\*
- [10220071](https://open.wenmarpro.com/bulletins/10220071), 2022-09-15: wiTECH Small Leak Verification Test \(SLVT\) \- P0456\-EVAP SYSTEM SMALL LEAK
- [10169219](https://open.wenmarpro.com/bulletins/10169219), 2019-12-16: wiTECH Small Leak Verification Test \(SLVT\) \- P0456\-EVAP SYSTEM SMALL LEAK
- [10138959](https://open.wenmarpro.com/bulletins/10138959), 2018-06-04: Flash: Powertrain Diagnostic And System Enhancements This bulletin involves reprogramming the Powertrain Control Module \(PCM\) with new software. A small number of customers may experience a Malfunction Indicator Lamp \(MIL\) illumination. Upon further investigation the technician may find the following Diagnostic Trouble Codes \(DTCs\) set in the PCM memory: \*\*P0335 \- Crankshaft Position Sensor Circuit. P0456 \- Evap System Small Leak.\*\* P219A \- Bank 1 Air Fuel Ratio Imbalance. P050B \- Cold Start Ignition Timing Performance. Other software enhancements included that will address some customers concerns: · \*\*Cruise control acceleration rate may be considered objectionable to some customers if the accel button is held down. · Engine is hard to start at temperatures \-29°C \(\-20°F\) for vehicles utilizing E15 fuel only.\*\*
- [10121862](https://open.wenmarpro.com/bulletins/10121862), 2017-11-03: Flash: Powertrain Diagnostic and System Improvements This bulletin involves reprogramming the Powertrain Control Module \(PCM\) with the latest available software. A small number of customers may experience a Malfunction Indicator Lamp \(MIL\) illumination. Upon further investigation the technician may find the following Diagnostic Trouble Codes \(DTCs\) set in the PCM memory: P0335 \- Crankshaft Position Sensor Circuit. P0456 \- Evap System Small Leak. P219A \- Bank 1 Air Fuel Ratio Imbalance. P050B \- Cold Start Ignition Timing Performance.The following software enhancement is also available: Engine is hard to start at temperatures \-29°C \(\-20°F\) for vehicles utilizing E15 fuel only \(Sales Code ECN\). Cruise control acceleration rate may be considered objectionable to some customers if the accel button is held down.