JEEP

18-086-24

2024-12-11 · NHTSA 11011903

A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.

Manufacturer summary

Original wording in English

"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): ● **P0325 - Knock/Combustion Vibration Sensor ""A"" Circuit. ● P0330 - Knock/Combustion Vibration Sensor ""B"" Circuit. ● P0300 - Multiple Cylinder Misfire. (NA Market Only) ● P032A - Knock/Combustion Vibration Sensor ""C"" Circuit. ● P018B - Fuel Pressure Sensor ""B"" Circuit Rang/Performance. ● P1CEA - Boost Side EVAP Purge System Performance. (NA Market Only)** ● P00F3 - Humidity Sensor Circuit Range/Performance. ● P06DD - Engine Oil Pressure Control Circuit Performance/Stuck Off. ● P00C6 - Fuel Rail Pressure Too Low - Engine Cranking. Customers may also comment on one or more of the following: ● **Low oil pressure Instrument Cluster Panel (IPC) warning during heavy towing. ● Engine RPM dip below idle speed during coast down to idle.** ● Undesirable vehicle drivability behavior causing a vehicle Shift to Park event during Engine Stop Start (ESS) while Adaptive Cruise Control (ACC) is active. ● Idle speed oscillations observed when in Snow and Mud modes for vehicle configured with 4x2 drivetrain. ● Screen two incorrectly pops up on the IPC for five seconds during Terrain and Rock mode. ● Fully Autonomous Parking Assist (FAPA) is not deactivated when the accelerator pedal is pressed. ● Vehicle is not heating up fast enough at freezing temperatures. **The following software calibration improvements are also available: ● Engine mega knock detection. ● Misfire during cold start. ● Avoid false failures with MIL on. (NA Market Only)** This bulletin involves reprogramming the PCM with the latest available software."

Repeated filings are grouped only when make, bulletin number, publication date and complete summary agree. Original record numbers are retained. Older publications remain available, and an explicit later version is shown when established. Pre-1994 vehicle associations are separated from default results; an unspecified year does not mean all model years apply.