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JEEP

18-004-24 REV. B

Manufacturer communications

Publication date
2024-08-08
Received by NHTSA
2024-08-13
NHTSA record numbers
11006243

Manufacturer summary

Original wording in English

"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."

NHTSA manufacturer communications ↗

Reported code forms

Manufacturer wording

Source wording can vary by vehicle and suffix. It is shown as written, not as a universal diagnosis.

JeepP0461-00
Fuel Level Sensor ""A"" Circuit Range/Performance

NHTSA 11006243

JeepP2C90-00
Crankcase Ventilation System - Hose ""A"" Disconnected

NHTSA 11006243

Check vehicle applicability

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

MakeModelModel year
JeepGRAND WAGONEER2023
JeepWAGONEER2023

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