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JEEP

18-031-14 REV. A

Manufacturer communications

Publication date
2014-09-03
Received by NHTSA
2018-06-11
NHTSA record numbers
10139599

Manufacturer summary

Original wording in English

Flash: MIL Illumination P1239, P0298- Engine Oil Temperature Too Low Or High, P0300 Multiple Cylinder Misfire, 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 Code has been set: P1239 - Engine Oil Temperature Too Low, set in cold ambient temperatures. P0298 - Engine Oil Temperature Too High, set in cold ambient temperatures. P0300 - Multiple Cylinder Misfire, may set at a 1-2 upshift above 6000 RPM. Possible rough idle when engaging Drive while in 4 LOW after a cold start .The following system improvements have also been included in this software release: Corrected a generic scan tool display issue regarding Mode 6 data accuracy.

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MakeModelModel year
JeepCHEROKEE2014

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