P0300 on the 2023 Jeep Gladiator
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.
| 18-045-26 | 2026-04-22. Service bulletin. 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): ● **P0300 - Multiple Cylinder Misfire (Active or Stored status set during cold start catalyst heating). ● P0301 - Cylinder 1 Misfire (Active or Stored status set during cold start catalyst heating). ● P0302 - Cylinder 2 Misfire (Active or Stored status set during cold start catalyst heating). ● P0303 - Cylinder 3 Misfire (Active or Stored status set during cold start catalyst heating). ● P0304 - Cylinder 4 Misfire (Active or Stored status set during cold start catalyst heating). ● P0305-00 - Cylinder 5 Misfire (Active or Stored status set during cold start catalyst heating). ● P0306-00 - Cylinder 6 Misfire (Active or Stored status set during cold start catalyst heating).** ● P08A6 - Gear Lever Position Sensor System - Multiple Sensor Correlation. ● P152F - Engine Hood Switch 2 / Engine Hood Switch 1 Correlation. ● P1129 - Closed Loop Fueling Not Achieved - Bank 2 Upstream. ● P0152-02 - O2 Sensor 2/1 Circuit High. ● P0158-02 - O2 Sensor 2/2 Circuit High. ● P2504 - Charging System Output High. ● P0563 - Battery/System Voltage High. Customers may also comment on one or more of the following: ● **The vehicle has a rough idle. ● The engine has a miss. ● Noisy valvetrain. ● "Service Transmission" message in the Instrument Panel Cluster (IPC) due to clutch slip detection with the transfer case in neutral. NOTE: Some customers may experience wheel spin or traction loss. In these situations, the Powertrain Control Module (PCM) may interpret the event as excessive clutch slip. To prevent potential clutch damage, a message may be displayed in the Instrument Panel Cluster (IPC).** ● Clutch is overheating. ● Clutch is slipping on engagement. M18 FSAR-TSB-7161 -2- ● Inability to accelerate uphill. ● Vehicle does not start. ● Vehicle is stuck in limp-home mode |
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| 18-062-24 | 2024-07-17. Service bulletin. "Flash: Powertrain Control Module (PCM) 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): ● P2463 - Particulate Filter Restriction - Soot Accumulation Bank 1. (EE Market Only)** ● P016F - Closed Loop Fuel Pressure Control At Limit - Pressure Too Low. ● P025C - Fuel Pump Module Control Circuit Low. ● P0300-00 - Multiple Cylinder Misfire. ● P0301-00 - Cylinder 1 Misfire. ● P0302-00 - Cylinder 2 Misfire. ● P0303-00 - Cylinder 3 Misfire. ● P0304-00 - Cylinder 4 Misfire. ● P0305-00 - Cylinder 5 Misfire. ● P0403-00 - EGR Control Circuit Open (Disabled Fault). ● P208B - Reductant Pump 1 Control Performance. Other Software enhancements: ● Low speed engine idle improvements. ● Improved engine restart performance and torque response during low fuel level and/or hot ambient conditions. This bulletin involves reprogramming the PCM with the latest available software." |
| 18-040-24 REV. A | 2024-07-09. Service bulletin. Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the PCM with the latest available software. Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle mustexhibit/set the following Diagnostic Trouble Code (DTC): P0300 - Multiple Cylinder Misfire. |
| 18-040-24 | 2024-06-06. Service bulletin. "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." |
| 18-154-22 REV. B | 2023-01-17. Service bulletin. Flash: Powertrain Control Module (PCM) Updates Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find the following Diagnostic Trouble Code (DTC) has been set: ? P0300 - Multiple Cylinder Misfire. This bulletin involves reprogramming the PCM with the latest available software. |
5 on file from NHTSA, as of 2026-10-19. See them in the bulletin list. A bulletin lists model years: read the document for which vehicles it concerns.