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August 8, 2023 Service bulletin

Flash: Powertrain Control Module (PCM) Updates Customers may experience a Malfunction Indicator Lamp (MIL)...

Jeep technical service bulletin 1807323 for 2021 Jeep Wrangler.

Bulletin number
1807323
Component
Power train: automatic transmission: control module (TCM/PCM/tecm)
Summary
Flash: Powertrain Control Module (PCM) Updates Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that the one or more of the following Diagnostic Trouble Codes (DTCs) have been set: ? U115F-00 - Lost Communication With Driver Presence Detection Module. ? P02EE - Cylinder 1 Injector Circuit Performance. ? P02EF - Cylinder 2 Injector Circuit Performance. ? P02F0 - Cylinder 3 Injector Circuit Performance. ? P02F1 - Cylinder 4 Injector Circuit Performance. The customer may also experience one or more of the following when DTC U115F-00 is triggered: ? Disabled engine stop / start (ESS) feature. ? Service ESS light and EVIC message is displayed in the Instrument Panel Cluster (IPC). This bulletin involves reprogramming the PCM with the latest available software.

Owners of these vehicles have filed 149 complaints in the transmission category.

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