# P0304 on the 2017 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 P0304

- [10187704](https://open.wenmarpro.com/bulletins/10187704), 2021-03-01: Flash: Powertrain Control Module \(PCM\) Updates This bulletin involves reprogramming the Powertrain Control Module \(PCM\) with thelatest available software. The customer may experience a Malfunction Indicator Lamp \(MIL\) illumination. Upon further investigation the technician may find one or more ofthe following Diagnostic Trouble Codes \(DTCs\): U1504 \- Implausible Message Data Length Received From Steering Angle Sensor. P1185 \- General Pressure Sensor Correlation. U1424\-00 \- Implausible Engine Torque Signal Received. P0101 \- Mass Air Flow Sensor "A" Circuit Performance. P0128 \- Thermostat Rationality. 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: Extended engine crank times or possibly a no start condition\(South Korea only\). During an engine limp mode condition, the transmission remains in a fixedgear.
- [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.