{"nhtsa_id":11011903,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2024-12-18","date":"2024-12-11","document_id":"18-086-24","mfr_campaign":null,"replaces":null,"component":"POWER TRAIN","mfr_system":"Powertrain Control Module","summary":"\"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.\"","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2024/MC-11011903-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2024/MC-11011903-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11011903","components":[{"id":"powertrain","name":"Transmission and driveline","parent":null}],"codes":["P00C6","P00F3","P018B","P0300","P0325","P032A","P0330","P06DD","P1CEA"],"topics":[],"vehicles":[{"make":"JEEP","model":"GRAND WAGONEER","year_from":2024,"year_to":2024,"match":"exact","vehicle_ids":["2024_jeep_grand-wagoneer"]},{"make":"JEEP","model":"WAGONEER","year_from":2024,"year_to":2024,"match":"exact","vehicle_ids":["2024_jeep_wagoneer"]}],"as_of":"2026-10-19","note":"A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.","attribution":[]}