JEEP

08-088-25 REV. B

2025-06-25 · NHTSA 11020102

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. Upon further investigation the technician must find one or more of the following Diagnostic Trouble Codes (DTCs) have been set: ● U0168 - Lost Communication With Vehicle Security Control Module. ● P0629 - Fuel Pump Control Circuit High. ● P0171 - Fuel system Lean. ● P0087 - Fuel Rail Pressure Too Low - Bank 1. Customers may also experience one or more of the following: ● Vehicle not starting. ● Variable speed fuel pump doesn't start after refueling. ● The Instrument Panel Cluster (IPC) unable to calculate the instantaneous fuel economy under heavy acceleration. ● The oxygen sensor can give incorrect values when entering Electric Vehicle (EV) mode. False fault detection is possible when this event occurs. ● The rear half shafts are damaged due to accelerating in drive with the Electronic Parking Brake (EPB) applied. In addition, the following software enhancement is available: ● Improve robustness against false failures for P219A - Bank 1 Air-Fuel Ratio Imbalance. This bulletin involves updating 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.