# P0300 on the 2015 Jeep Grand 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

- [10228113](https://open.wenmarpro.com/bulletins/10228113), 2022-12-19: 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 a technician may find the following Diagnostic Trouble Codes \(DTCs\) set in the PCM memory: · \*\* P0456 \- EVAP System Small Leak.\*\* · P0301\- Cylinder 1 Misfire. · P0302\- Cylinder 2 Misfire. · P0303\- Cylinder 3 Misfire. · P0304\- Cylinder 4 Misfire. · P0305\- Cylinder 5 Misfire. · P0306\- Cylinder 6 Misfire · P0300\- Multiple Cylinder Misfire. · P0513\- Invalid SKIM Key.
- [10217420](https://open.wenmarpro.com/bulletins/10217420), 2022-08-08: Flash: 6.4L Powertrain Diagnostic And System Enhancements 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 one or more of the following Diagnostic Trouble Codes \(DTCs\) set in the PCM memory. ? P0300 \- Multiple Cylinder Misfire ? P2096 \- Downstream Fuel Trim System 1 Lean ? P2097 \- Downstream Fuel Trim System 1 Rich ? P2098 \- Downstream Fuel Trim System 2 Lean ? P2099 \- Downstream Fuel Trim System 2 Rich ? P0513 \- Invalid Skim Key \- May set when pressing the remote start button on the Frequency Operated Button/Integrated Key \(FOBIK\) and Keyless Ignition Node \(KIN\) at the same time. In addition to the DTCs listed above, customers may also experience one or more of the following conditions: ? Unable to obtain top vehicle speed during aggressive Wide Open Throttle \(WOT\) operation due to false spark knock/detonation detection. ? Less then desired engine performance on cold start.
- [10217390](https://open.wenmarpro.com/bulletins/10217390), 2022-08-08: Flash: PCM Software 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 a technician may find the following Diagnostic Trouble Codes \(DTCs\) set in the PCM memory. ? P0301\- Cylinder 1 Misfire ? P0302\- Cylinder 2 Misfire ? P0303\- Cylinder 3 Misfire ? P0304\- Cylinder 4 Misfire ? P0305\- Cylinder 5 Misfire ? P0306\- Cylinder 6 Misfire ? P0300\- Multiple Cylinder Misfire ? P0513\- Invalid SKIM Key
- [10216182](https://open.wenmarpro.com/bulletins/10216182), 2022-07-25: Flash: 6.4L Powertrain Diagnostic And System Enhancements 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 one or more of the following Diagnostic Trouble Codes \(DTCs\) set in the PCM memory. ? P0300 \- Multiple Cylinder Misfire ? P2096 \- Downstream Fuel Trim System 1 Lean ? P2097 \- Downstream Fuel Trim System 1 Rich ? P2098 \- Downstream Fuel Trim System 2 Lean ? P2099 \- Downstream Fuel Trim System 2 Rich ? P0513 \- Invalid Skim Key \- May set when pressing the remote start button on the Frequency Operated Button/Integrated Key \(FOBIK\) and Keyless Ignition Node \(KIN\) at the same time. In addition to the DTCs listed above, customers may also experience one or more of the following conditions: ? Unable to obtain top vehicle speed during aggressive Wide Open Throttle \(WOT\) operation due to false spark knock/detonation detection. ? Less then desired engine performance on cold start.
- [10216152](https://open.wenmarpro.com/bulletins/10216152), 2022-07-25: Flash: PCM Software 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 a technician may find the following Diagnostic Trouble Codes \(DTCs\) set in the PCM memory. ? P0301\- Cylinder 1 Misfire ? P0302\- Cylinder 2 Misfire ? P0303\- Cylinder 3 Misfire ? P0304\- Cylinder 4 Misfire ? P0305\- Cylinder 5 Misfire ? P0306\- Cylinder 6 Misfire ? P0300\- Multiple Cylinder Misfire ? P0513\- Invalid SKIM Key
- [10181478](https://open.wenmarpro.com/bulletins/10181478), 2020-10-26: 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 a technician may find the following Diagnostic Trouble Codes \(DTCs\) set in the PCM memory: · \*\* P0456 \- EVAP System Small Leak.\*\* · P0301\- Cylinder 1 Misfire. · P0302\- Cylinder 2 Misfire. · P0303\- Cylinder 3 Misfire. · P0304\- Cylinder 4 Misfire. · P0305\- Cylinder 5 Misfire. · P0306\- Cylinder 6 Misfire · P0300\- Multiple Cylinder Misfire. · P0513\- Invalid SKIM Key.
- [10151763](https://open.wenmarpro.com/bulletins/10151763), 2018-12-17: Flash: 6.4L Powertrain Diagnostic And System Enhancements 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 one or more of the following Diagnostic Trouble Codes \(DTCs\) set in the PCM memory. ? P0300 \- Multiple Cylinder Misfire ? P2096 \- Downstream Fuel Trim System 1 Lean ? P2097 \- Downstream Fuel Trim System 1 Rich ? P2098 \- Downstream Fuel Trim System 2 Lean ? P2099 \- Downstream Fuel Trim System 2 Rich ? P0513 \- Invalid Skim Key \- May set when pressing the remote start button on the Frequency Operated Button/Integrated Key \(FOBIK\) and Keyless Ignition Node \(KIN\) at the same time. In addition to the DTCs listed above, customers may also experience one or more of the following conditions: ? Unable to obtain top vehicle speed during aggressive Wide Open Throttle \(WOT\) operation due to false spark knock/detonation detection. ? Less then desired engine performance on cold start.
- [10151733](https://open.wenmarpro.com/bulletins/10151733), 2018-12-17: Flash: PCM Software 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 a technician may find the following Diagnostic Trouble Codes \(DTCs\) set in the PCM memory. ? P0301\- Cylinder 1 Misfire ? P0302\- Cylinder 2 Misfire ? P0303\- Cylinder 3 Misfire ? P0304\- Cylinder 4 Misfire ? P0305\- Cylinder 5 Misfire ? P0306\- Cylinder 6 Misfire ? P0300\- Multiple Cylinder Misfire ? P0513\- Invalid SKIM Key
- [10141278](https://open.wenmarpro.com/bulletins/10141278), 2018-06-18: 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 a technician may find the following Diagnostic Trouble Codes \(DTCs\) set in the PCM memory: · \*\* P0456 \- EVAP System Small Leak.\*\* · P0301\- Cylinder 1 Misfire. · P0302\- Cylinder 2 Misfire. · P0303\- Cylinder 3 Misfire. · P0304\- Cylinder 4 Misfire. · P0305\- Cylinder 5 Misfire. · P0306\- Cylinder 6 Misfire · P0300\- Multiple Cylinder Misfire. · P0513\- Invalid SKIM Key.
- [10121721](https://open.wenmarpro.com/bulletins/10121721), 2017-11-03: Flash: Powertrain Diagnostic And System Enhancements 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 that the following Diagnostic Trouble Codes \(DTCs\) have been set: · \*\*P1115 \- General Temperature Rationality. · P0441 \- EVAP Purge System Performance. · P0456 \- EVAP System Small Leak. · P030X \- Cylinder x Misfire Detection. · P0335 \- Crankshaft Position Sensor Circuit. · P0122 \- Throttle Position Sensor 1 Circuit Low. · P0123 \- Throttle Position Sensor 1 Circuit High. · P0222 \- Throttle Position Sensor 2 Circuit Low. · P0223 \- Throttle Position Sensor 2 Circuit High. · P2299 \- Brake Pedal Position/Accelerator Pedal Position Incompatible. · P2172 \- High Airflow/Vacuum Leak Detected \(Instantaneous Accumulation\). · P2610 \- PCM Internal Engine Off Timer Performance.\*\* · P0300 \- Multiple Cylinder Misfire. · P2096 \- Downstream Fuel Trim System 1 Lean. · P2097 \- Downstream Fuel Trim System 1 Rich. · P2098 \- Downstream Fuel Trim System 2 Lean. · P2099 \- Downstream Fuel Trim System 2 Rich. · P0513 \- Invalid Skim Key \- May set when pressing the remote start button on the Frequency Operated Button/Integrated Key \(FOBIK\) and Keyless Ignition Node \(KIN\) at the same time. Customers may also experience one or more of the following conditions: · Unable to obtain top vehicle speed during aggressive Wide Open Throttle \(WOT\) operation due to false spark knock/detonation detection. · Less then desired engine performance on cold start.