# P0300 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 P0300

- [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.
- [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.
- [10175532](https://open.wenmarpro.com/bulletins/10175532), 2020-05-26: 2.4L Ignition Coil Boot Replacement This bulletin involves replacing all four ignition coil insulating boots. Customers may experience a Malfunction Indicator Lamp \(MIL\) illumination. Upon further investigation the technician may find that one or more of the following Diagnostic Trouble Codes \(DTCs\) have been set:P0300 \- Multiple Cylinder Misfire P0301 \- Cylinder 1 Misfire. P0302 \- Cylinder 2 Misfire. P0303 \- Cylinder 3 Misfire. P0304 \- Cylinder 4 Misfire. Some customers may also experience the following condition:Rough running engine.
- [10175119](https://open.wenmarpro.com/bulletins/10175119), 2020-05-18: 2.4L Ignition Coil Boot Replacement This bulletin involves replacing all four ignition coil insulating boots. Customers may experience a Malfunction Indicator Lamp \(MIL\) illumination. Upon further investigation the technician may find thatone or more of the following Diagnostic Trouble Codes \(DTCs\) have been set:P0300 \- Multiple Cylinder Misfire P0301 \- Cylinder 1 Misfire. P0302 \- Cylinder 2 Misfire. P0303 \- Cylinder 3 Misfire. P0304 \- Cylinder 4 Misfire. Some customers may also experience the following condition:Rough running engine.
- [10174199](https://open.wenmarpro.com/bulletins/10174199), 2020-04-27: 2.4L Ignition Coil Boot Replacement This bulletin involves replacing all four ignition coil insulating boots. Customers may experience a Malfunction Indicator Lamp \(MIL\) illumination. Upon further investigation the technician may find thatone or more of the following Diagnostic Trouble Codes \(DTCs\) have been set:P0300 \- Multiple Cylinder Misfire P0301 \- Cylinder 1 Misfire. P0302 \- Cylinder 2 Misfire. P0303 \- Cylinder 3 Misfire. P0304 \- Cylinder 4 Misfire. Some customers may also experience the following condition:Rough running engine.
- [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.
- [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.