# P0300 on the 2023 Jeep Wagoneer

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

- [11030416](https://open.wenmarpro.com/bulletins/11030416), 2026-04-01: Flash: Ignition System Control Module \(ISCM\) Updates Customers must experience a Malfunction Indicator Lamp \(MIL\) illumination and the vehicle must SYMPTOM: exhibit/set one or more of the following Diagnostic Trouble Codes \(DTCs\): ● P2C30\-00 \- Ignition Coil Primary Circuit Fuse A. ● P2C31\-00 \- Ignition Coil Primary Circuit Fuse B. ● P0300\-00 \- Multiple Cylinder Misfire. ● P0301\-00 \- Cylinder 1 Misfire Detected. ● P0302\-00 \- Cylinder 2 Misfire Detected. ● P0303\-00 \- Cylinder 3 Misfire Detected. ● P0304\-00 \- Cylinder 4 Misfire Detected. ● P0305\-00 \- Cylinder 5 Misfire Detected. ● P0306\-00 \- Cylinder 6 Misfire Detected. ● P0420\-00 \- Catalyst System Efficiency Below Threshold Bank 1. ● P0430\-00 \- Catalyst System Efficiency Below Threshold Bank 2. Customers may also comment on the following: ● Engine hesitates/misfires. This bulletin involves inspecting and possibly reprogramming the ISCM with the latest available software.
- [11030251](https://open.wenmarpro.com/bulletins/11030251), 2026-03-25: Flash: Powertrain Control Module \(PCM\) Updates Customers must experience a Malfunction Indicator Lamp \(MIL\) illumination and the vehicle must SYMPTOM: exhibit/set one or more of the following Diagnostic Trouble Codes \(DTCs\): ● \*\*P0111\-00 \- Intake Air Temperature Sensor 1 Circuit Range Performance Bank 1 \(In Active or Stored status\). ● P0071\-00 \- Ambient Air Temperature Sensor Performance \(In Active or Stored status\). ● P0072\-00 \- Ambient Air Temperature Sensor Circuit "A" Low \(In Active or Stored status\). ● P0073\-00 \- Ambient Air Temperature Sensor Circuit "A" High \(In Active or Stored status\). ● P0011\-00 \- Bank 1 Camshaft 1 Position Timing Over Advanced Or \(In Active or Stored status\). ● P25E4\-00 \- B Camshaft Position \- Unable To Achieve Locked Position Bank 1 \(In Active or Stored status\). ● U0673\-00 \- Lost Communication With Ion Sense Module \(In Active or Stored status\). ● P05BD\-00 \- Stop\-Start Mode Switch Range/Performance \(In Active or Stored status\). ● P06DD\-00 \- Engine Oil Pressure Control Circuit Performance/stuck Off \(In Active or Stored status\). ● P0116\-00 \- Engine Coolant Temperature Sensor 1 Performance \(In Active or Stored status\). ● P00C6\-00 \- Fuel Rail Pressure Too Low \- Engine Cranking \(In Active or Stored status\). ● P0325\-00 \- Knock/Combustion Vibration Sensor 1 Circuit \(In Active or Stored status\). ● P0330\-00 \- Knock/Combustion Vibration Sensor 2 Circuit \(In Active or Stored status\). ● P032A\-00 \- Knock \- Combustion Vibration Sensor C Circuit \(In Active or Stored status\). ● P062B\-00 \- Internal Control Module Fuel Injector Control Performance \(In Active or Stored status\). ● P018B\-00 \- Fuel Pressure Sensor "B" Circuit Range/Performance \(In Active or Stored status\). ● P00F3\-00 \- Humidity Sensor Circuit Range \- Performance \(In Active or Stored status\). ● P0604\-00 \- Internal Control Module Random Access Memory RAM Error \(In Active or Stored status\). ● P060C\-00 \- Internal Control Module Main Processor Performance \(In Active or Stored status\). ● P0300 \- Mul
- [11030229](https://open.wenmarpro.com/bulletins/11030229), 2026-03-25: Flash: Powertrain Control Module \(PCM\) Updates Customers must experience a Malfunction Indicator Lamp \(MIL\) illumination and the vehicle must SYMPTOM: exhibit/set one or more of the following Diagnostic Trouble Codes \(DTCs\): ● \*\*P0111\-00 \- Intake Air Temperature Sensor 1 Circuit Range Performance Bank 1. \(In Active or Stored status\) ● P0071\-00 \- Ambient Air Temperature Sensor Performance. \(In Active or Stored status\) ● P0072\-00 \- Ambient Air Temperature Sensor Circuit "A" Low. \(In Active or Stored status\) ● P0073\-00 \- Ambient Air Temperature Sensor Circuit "A" High. \(In Active or Stored status\) ● P0011\-00 \- Bank 1 Camshaft 1 Position Timing Over Advanced Or. \(In Active or Stored status\) ● P25E4\-00 \- B Camshaft Position \- Unable To Achieve Locked Position Bank 1. \(In Active or Stored status\) ● P05BD\-00 \- Stop\-Start Mode Switch Range/Performance. \(In Active or Stored status\) ● P0116\-00 \- Engine Coolant Temperature Sensor 1 Performance. \(In Active or Stored status\) ● P062B\-00 \- Internal Control Module Fuel Injector Control Performance. \(In Active or Stored status\) ● P0604\-00 \- Internal Control Module Random Access Memory Ram Error. \(In Active or Stored status\) ● P060C\-00 \- Internal Control Module Main Processor Performance. \(In Active or Stored status\)\*\* ● P018B\-00 \- Fuel Pressure Sensor "B" Circuit Range/performance. \*\*\(In Active or Stored status\)\*\* ● P1CEA\-00 \- Boost Side EVAP Purge System Performance. \*\*\(In Active or Stored status\)\*\* ● P06DD\-00 \- Engine Oil Pressure Control Circuit Performance/Stuck Off. \*\*\(In Active or Stored status\)\*\* ● P00C6\-00 \- Fuel Rail Pressure Too Low \- Engine Cranking. \*\*\(In Active or Stored status\)\*\* ● P0300\-00 \- Multiple Cylinder Misfire. \*\*\(In Active or Stored status\)\*\* Customers may also experience one or more of the following: ● \*\*Oil Level High Warning in the Instrument Panel Cluster \(IPC\).\*\* ● Fully Autonomous Parking Assist \(FAPA\) is not deactivated when accelerator pedal is pressed. ● Vehicle is not heating up fast enough at freezi
- [11030226](https://open.wenmarpro.com/bulletins/11030226), 2026-03-25: Flash: Powertrain Control Module \(PCM\) Updates Customers must experience a Malfunction Indicator Lamp \(MIL\) illumination and the vehicle must SYMPTOM: exhibit/set one or more of the following Diagnostic Trouble Codes \(DTCs\): ● \*\*P0111\-00 \- Intake Air Temperature Sensor 1 Circuit Range Performance Bank 1 \(In Active or Stored status\). ● P0071\-00 \- Ambient Air Temperature Sensor Performance \(In Active or Stored status\). ● P0072\-00 \- Ambient Air Temperature Sensor Circuit "A" Low \(In Active or Stored status\). ● P0073\-00 \- Ambient Air Temperature Sensor Circuit "A" High \(In Active or Stored status\). ● P0011\-00 \- Bank 1 Camshaft 1 Position Timing Over Advanced Or \(In Active or Stored status\). ● P25E4\-00 \- B Camshaft Position \- Unable To Achieve Locked Position Bank 1 \(In Active or Stored status\). ● U0673\-00 \- Lost Communication With Ion Sense Module \(In Active or Stored status\). ● P05BD\-00 \- Stop\-Start Mode Switch Range/Performance \(In Active or Stored status\). ● P06DD\-00 \- Engine Oil Pressure Control Circuit Performance/stuck Off \(In Active or Stored status\). ● P0116\-00 \- Engine Coolant Temperature Sensor 1 Performance \(In Active or Stored status\). ● P00C6\-00 \- Fuel Rail Pressure Too Low \- Engine Cranking \(In Active or Stored status\). ● P0325\-00 \- Knock/Combustion Vibration Sensor 1 Circuit \(In Active or Stored status\). ● P0330\-00 \- Knock/Combustion Vibration Sensor 2 Circuit \(In Active or Stored status\). ● P032A\-00 \- Knock \- Combustion Vibration Sensor C Circuit \(In Active or Stored status\). ● P062B\-00 \- Internal Control Module Fuel Injector Control Performance \(In Active or Stored status\). ● P018B\-00 \- Fuel Pressure Sensor "B" Circuit Range/Performance \(In Active or Stored status\). ● P00F3\-00 \- Humidity Sensor Circuit Range \- Performance \(In Active or Stored status\). ● P0604\-00 \- Internal Control Module Random Access Memory RAM Error \(In Active or Stored status\). ● P060C\-00 \- Internal Control Module Main Processor Performance \(In Active or Stored status\). ● P0300 \- Mul
- [11015037](https://open.wenmarpro.com/bulletins/11015037), 2025-03-05: "Flash: Ignition System Control Module \(ISCM\) Updates Customers must experience a Malfunction Indicator Lamp \(MIL\) illumination and the vehicle must exhibit/set one or more of the following Diagnostic Trouble Codes \(DTCs\): ● P2C30\-00 \- Ignition Coil Primary Circuit Fuse A. ● P2C31\-00 \- Ignition Coil Primary Circuit Fuse B. ● P0300\-00 \- Multiple Cylinder Misfire. ● P0301\-00 \- Cylinder 1 Misfire Detected. ● P0302\-00 \- Cylinder 2 Misfire Detected. ● P0303\-00 \- Cylinder 3 Misfire Detected. ● P0304\-00 \- Cylinder 4 Misfire Detected. ● P0305\-00 \- Cylinder 5 Misfire Detected. ● P0306\-00 \- Cylinder 6 Misfire Detected. ● P0420\-00 \- Catalyst System Efficiency Below Threshold Bank 1. ● P0430\-00 \- Catalyst System Efficiency Below Threshold Bank 2. Customers may also comment on the following: ● Engine hesitates/misfires. This bulletin involves updating the ISCM with the latest available software"
- [11008208](https://open.wenmarpro.com/bulletins/11008208), 2024-10-01: "Flash: Powertrain Control Module \(PCM\) Updates Customers must experience a Malfunction Indicator Lamp \(MIL\) illumination and the vehicle must exhibit/set the following Diagnostic Trouble Code \(DTC\): ● P0300 \- Multiple Cylinder Misfire This bulletin involves reprogramming the PCM with the latest available software."
- [11006243](https://open.wenmarpro.com/bulletins/11006243), 2024-08-13: "Flash: Powertrain Control Module \(PCM\) Updates 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 \(DTCs\) have been set: ● \*\*P00F3\-00 \- Humidity Sensor Circuit Range\-performance.\*\* ● P00C6\-00 \- Fuel Rail Pressure Too Low \- Engine Cranking. ● P06DD\-00 \- Engine Oil Pressure Control Circuit Performance/Stuck Off. ● P0461\-00 \- Fuel Level Sensor ""A"" Circuit Range/Performance. ● P051B\-00 \- Crankcase Pressure Sensor Circuit Range/Performance. ● P2F64\-00 \- Ion Sense Feedback Circuit A. ● P0331\-00 \- Knock Sensor 2 Circuit Range/Performance. ● P0300\-00 \- Multiple Cylinder Misfire. ● P2C90\-00 \- Crankcase Ventilation System \- Hose ""A"" Disconnected. ● P0011\-00 \- Bank 1 Camshaft 1 Position Timing Over Advanced Or System Performance. ● P0604\-00 \- Internal Control Module Random Access Memory Ram Error. ● P060C\-00 \- Internal Control Module Main Processor Performance. \*\*Customers may also comment on the following: ● Undesirable vehicle drivability behavior causing the a Shift to Park event during Engine Stop Start \(ESS\) while Adaptive Cruise Control \(ACC\) is active. ● Pressing ACC button while ESS active can shift the vehicle to park. ● Idle speed oscillations observed when in Snow and Mud modes. ● Poor engine performance \(undershoots engine speed\) for ESS and for non\-ESS engine start. ● Screen two incorrectly pops up on the Instrument Cluster Panel \(IPC\) for 5 seconds during Terrain and Rock mode. ● Vehicle performance complaints when coasting at lower speeds.\*\* This bulletin involves reprogramming the PCM with the latest available software."
- [10251853](https://open.wenmarpro.com/bulletins/10251853), 2024-03-18: Flash: Powertrain Control Module \(PCM\) Updates 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 \(DTCs\) have been set: ? \*\*P00C6\-00 \- Fuel Rail Pressure Too Low \- Engine Cranking. ? P06DD\-00 \- Engine Oil Pressure Control Circuit Performance/Stuck Off. ? P0461\-00 \- Fuel Level Sensor "A" Circuit Range/Performance. ? P051B\-00 \- Crankcase Pressure Sensor Circuit Range/Performance. ? P2F64\-00 \- Ion Sense Feedback Circuit A. ? P0331\-00 \- Knock Sensor 2 Circuit Range/Performance. ? P0300\-00 \- Multiple Cylinder Misfire.\*\* ? P2C90\-00 \- Crankcase Ventilation System \- Hose "A" Disconnected. ? P0011\-00 \- Bank 1 Camshaft 1 Position Timing Over Advanced Or System Performance. ? P0604\-00 \- Internal Control Module Random Access Memory Ram Error. ? P060C\-00 \- Internal Control Module Main Processor Performance. This bulletin involves reprogramming the PCM with the latest available software.
- [10239947](https://open.wenmarpro.com/bulletins/10239947), 2023-07-31: Flash: Powertrain Control Module \(PCM\) Updates Customers may experience a Malfunction Indicator Lamp \(MIL\) illumination. Upon further investigation the technician may find one or more of the following DTCs have been set: ? \*\*P0300\-00 \- Multiple Cylinder Misfire. ? P0301\-00 \- Cylinder 1 Misfire Detected. ? P0302\-00 \- Cylinder 2 Misfire. ? P0303\-00 \- Cylinder 3 Misfire ? P0304\-00 \- Cylinder 4 Misfire. ? P0305\-00 \- Cylinder 5 Misfire. ? P0306\-00 \- Cylinder 6 Misfire.\*\* ? P05CC\-00 \- Cold Start A Camshaft Position Timing Performance Bank 1. Customer may also experience the following: ? Poor or insufficient A/C performance during towing or other high torque maneuvers. ? Belt chirp is heard at startup or when A/C cycles on. This bulletin involves reprogramming the PCM with the latest available software.