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April 11, 2014 Service bulletin

Flash: MIL Illumination

Jeep technical service bulletin 18-029-14 for 2014 Jeep Wrangler.

Bulletin number
18-029-14
Component
Power train: automatic transmission: control module (TCM/PCM/tecm)
Summary
Flash: MIL Illumination. Includes Powertrain System Improvements/Enhancements This bulletin involves selectively erasing and reprogramming the Powertrain Control Module (PCM) with new software. A small number of customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the Technician may find that the following Diagnostic Trouble Codes have been set: ? P2097- Downstream Fuel Trim System 1 Rich ? P2099- Downstream Fuel Trim System 2 Rich The following powertrain system improvements/enhancements are also included in this software release: ? Corrected a generic scan tool display issue regarding Mode 6 data accuracy. Updating the PCM software will correct the conditions listed above.

Owners of these vehicles have filed 88 complaints in the transmission category.

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