# P0456 on the 2015 Jeep Cherokee

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
- [10228106](https://open.wenmarpro.com/bulletins/10228106), 2022-12-19: Flash: 2.4L Powertrain Diagnostic And System Improvements This bulletin involves reprogramming the Powertrain Control Module \(PCM\) with the latest available software. Some customers may experience a Malfunction Indicator Lamp \(MIL\) illumination. Upon further investigation the technician may find one or more of the following DTCs: 2015 KL Only · \*\*P0335 \- Crankshaft Position Sensor Circuit.\*\* · P0456 \- EVAP System Small Leak. · P0300 \- Multiple Cylinder Misfire. · P0301 \- Cylinder 1 Misfire. · P0302 \- Cylinder 2 Misfire. · P0303 \- Cylinder 3 Misfire. · P0304 \- Cylinder 4 Misfire. · P2610 \- PCM Internal Engine Off Timer Performance. · P1607 \- PCM Internal Shutdown Timer Rationality. · U0402 \- Implausible Data Received From TCM \(ED6\). · P0116 \- Engine Coolant Temperature Sensor 1 Performance. · P050D \- Cold Start Rough Idle. · P2172 \- High Airflow/Vacuum Leak Detected. · P219A \- Air\-Fuel Ratio Cylinder Imbalance Bank 1 has been set in the PCM. 2014 KL Only · P2172 \- High Airflow/Vacuum Leak Detected. · P219A \- Air\-Fuel Ratio Cylinder Imbalance Bank 1 has been set in the PCM. · P106A \- Cylinder 3 Oil Supply Solenoid Valve Switch Off Time Out Of Range. · P2251 \- O2 Sensor 1/1 Negative Current Control Circuit Open. · P0031 \- O2 Sensor 1/1 Heater Circuit Low. In addition, some customers may experience one or more of the following conditions: · Cold Engine Startup Flare and Idle Surge \(ED6\). · Intermittent elevated engine RPM at start up. · Less than desired gear engagement in lower ambient temperatures. · Less than desired idle performance.
- [10224623](https://open.wenmarpro.com/bulletins/10224623), 2022-10-24: 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: · \*\*P1D83 \- Implausible Engine Oil Temperature Signal Received.\*\* · P0456 \- EVAP System Small Leak. · P0335 \- Crankshaft Position Sensor Circuit. · U0402 \- Implausible Data Received From TCM \- \(Transmission Control Module\).\*\* · B10EA \- Blower Motor Control Circuit High. · B10E9 \- Blower Motor Control Circuit Low. · P0441 \- EVAP Purge System Performance. · P0116 \- Engine Coolant Temperature Sensor Performance. · P2067 \- Fuel Level Sensor 2 Circuit Low \(International Only\). In addition the customer may notice one of the following conditions: · \*\*A push sensation when the transmission is downshifting from eighth to seventh gear.\*\* · Vehicle shudder at stop/start with A/C on.
- [10220071](https://open.wenmarpro.com/bulletins/10220071), 2022-09-15: wiTECH Small Leak Verification Test \(SLVT\) \- P0456\-EVAP SYSTEM SMALL LEAK
- [10181471](https://open.wenmarpro.com/bulletins/10181471), 2020-10-26: Flash: 2.4L Powertrain Diagnostic And System Improvements This bulletin involves reprogramming the Powertrain Control Module \(PCM\) with the latest available software. Some customers may experience a Malfunction Indicator Lamp \(MIL\) illumination. Upon further investigation the technician may find one or more of the following DTCs: 2015 KL Only · \*\*P0335 \- Crankshaft Position Sensor Circuit.\*\* · P0456 \- EVAP System Small Leak. · P0300 \- Multiple Cylinder Misfire. · P0301 \- Cylinder 1 Misfire. · P0302 \- Cylinder 2 Misfire. · P0303 \- Cylinder 3 Misfire. · P0304 \- Cylinder 4 Misfire. · P2610 \- PCM Internal Engine Off Timer Performance. · P1607 \- PCM Internal Shutdown Timer Rationality. · U0402 \- Implausible Data Received From TCM \(ED6\). · P0116 \- Engine Coolant Temperature Sensor 1 Performance. · P050D \- Cold Start Rough Idle. · P2172 \- High Airflow/Vacuum Leak Detected. · P219A \- Air\-Fuel Ratio Cylinder Imbalance Bank 1 has been set in the PCM. 2014 KL Only · P2172 \- High Airflow/Vacuum Leak Detected. · P219A \- Air\-Fuel Ratio Cylinder Imbalance Bank 1 has been set in the PCM. · P106A \- Cylinder 3 Oil Supply Solenoid Valve Switch Off Time Out Of Range. · P2251 \- O2 Sensor 1/1 Negative Current Control Circuit Open. · P0031 \- O2 Sensor 1/1 Heater Circuit Low. In addition, some customers may experience one or more of the following conditions: · Cold Engine Startup Flare and Idle Surge \(ED6\). · Intermittent elevated engine RPM at start up. · Less than desired gear engagement in lower ambient temperatures. · Less than desired idle performance.
- [10169219](https://open.wenmarpro.com/bulletins/10169219), 2019-12-16: wiTECH Small Leak Verification Test \(SLVT\) \- P0456\-EVAP SYSTEM SMALL LEAK
- [10160077](https://open.wenmarpro.com/bulletins/10160077), 2019-05-20: Flash: 2.4L Powertrain Diagnostic And System Improvements This bulletin involves reprogramming the Powertrain Control Module \(PCM\) with the latest available software. Some customers may experience a Malfunction Indicator Lamp \(MIL\) illumination. Upon further investigation the technician may find one or more of the following Diagnostic Trouble Codes \(DTCs\): 2015 KL Only ? P0456 \- EVAP System Small Leak. ? P0300 \- Multiple Cylinder Misfire. ? P0301 \- Cylinder 1 Misfire. ? P0302 \- Cylinder 2 Misfire. ? P0303 \- Cylinder 3 Misfire. ? P0304 \- Cylinder 4 Misfire. ? P2610 \- PCM Internal Engine Off Timer Performance. ? P1607 \- PCM Internal Shutdown Timer Rationality. ? U0402 \- Implausible Data Received From TCM \(ED6\). ? P0116 \- Engine Coolant Temperature Sensor 1 Performance. ? P050D \- Cold Start Rough Idle. ? P2172 \- High Airflow/Vacuum Leak Detected. ? P219A \- Air\-Fuel Ratio Cylinder Imbalance Bank 1 has been set in the PCM. 2014 KL Only ? P2172 \- High Airflow/Vacuum Leak Detected. ? P219A \- Air\-Fuel Ratio Cylinder Imbalance Bank 1 has been set in the PCM. ? P106A \- Cylinder 3 Oil Supply Solenoid Valve Switch Off Time Out Of Range. ? P2251 \- O2 Sensor 1/1 Negative Current Control Circuit Open. ? P0031 \- O2 Sensor 1/1 Heater Circuit Low. In addition, some customers may experience one or more of the following conditions: ? Cold Engine Startup Flare and Idle Surge \(ED6\). ? Intermittent elevated engine RPM at start up. ? Less than desired gear engagement in lower ambient temperatures. ? Less than desired idle performance. These conditions apply to 2015 model year vehicles only.
- [10160042](https://open.wenmarpro.com/bulletins/10160042), 2019-05-20: Flash: 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: ? B10EA \- Blower Motor Control Circuit High. ? B10E9 \- Blower Motor Control Circuit Low. ? P0456 \- EVAP System Small Leak. ? P0441 \- EVAP Purge System Performance. ? P0116 \- Engine Coolant Temperature Sensor Performance. ? U0402 \- Implausible Data Received From TCM. ? P2067 \- Fuel Level Sensor 2 Circuit Low \(International Only\). In addition the customer may notice the following condition: ? Vehicle shudder at stop/start with A/C on.
- [10141271](https://open.wenmarpro.com/bulletins/10141271), 2018-06-18: Flash: 2.4L Powertrain Diagnostic And System Improvements This bulletin involves reprogramming the Powertrain Control Module \(PCM\) with the latest available software. Some customers may experience a Malfunction Indicator Lamp \(MIL\) illumination. Upon further investigation the technician may find one or more of the following DTCs: 2015 KL Only · \*\*P0335 \- Crankshaft Position Sensor Circuit.\*\* · P0456 \- EVAP System Small Leak. · P0300 \- Multiple Cylinder Misfire. · P0301 \- Cylinder 1 Misfire. · P0302 \- Cylinder 2 Misfire. · P0303 \- Cylinder 3 Misfire. · P0304 \- Cylinder 4 Misfire. · P2610 \- PCM Internal Engine Off Timer Performance. · P1607 \- PCM Internal Shutdown Timer Rationality. · U0402 \- Implausible Data Received From TCM \(ED6\). · P0116 \- Engine Coolant Temperature Sensor 1 Performance. · P050D \- Cold Start Rough Idle. · P2172 \- High Airflow/Vacuum Leak Detected. · P219A \- Air\-Fuel Ratio Cylinder Imbalance Bank 1 has been set in the PCM. 2014 KL Only · P2172 \- High Airflow/Vacuum Leak Detected. · P219A \- Air\-Fuel Ratio Cylinder Imbalance Bank 1 has been set in the PCM. · P106A \- Cylinder 3 Oil Supply Solenoid Valve Switch Off Time Out Of Range. · P2251 \- O2 Sensor 1/1 Negative Current Control Circuit Open. · P0031 \- O2 Sensor 1/1 Heater Circuit Low. In addition, some customers may experience one or more of the following conditions: · Cold Engine Startup Flare and Idle Surge \(ED6\). · Intermittent elevated engine RPM at start up. · Less than desired gear engagement in lower ambient temperatures. · Less than desired idle performance.
- [10140167](https://open.wenmarpro.com/bulletins/10140167), 2018-06-11: 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: · \*\*P1D83 \- Implausible Engine Oil Temperature Signal Received.\*\* · P0456 \- EVAP System Small Leak. · P0335 \- Crankshaft Position Sensor Circuit. · U0402 \- Implausible Data Received From TCM \- \(Transmission Control Module\).\*\* · B10EA \- Blower Motor Control Circuit High. · B10E9 \- Blower Motor Control Circuit Low. · P0441 \- EVAP Purge System Performance. · P0116 \- Engine Coolant Temperature Sensor Performance. · P2067 \- Fuel Level Sensor 2 Circuit Low \(International Only\). In addition the customer may notice one of the following conditions: · \*\*A push sensation when the transmission is downshifting from eighth to seventh gear.\*\* · Vehicle shudder at stop/start with A/C on.