Jeep Oil Temperature Too Low

    Jan. 3, 2023

    This bulletin applies to 2015 Jeep Wrangler vehicles built on or before March 16, 2015 and equipped with a 3.6L engine and 6-speed manual transmission, that exhibit a too-low engine oil temperature after an extended idle. The MIL may be on. DTC P1239 (engine oil temp too low) may be stored.

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    65b858be0e36b1001e818177 Jeep5

    This bulletin applies to 2015 Jeep Wrangler vehicles built on or before March 16, 2015 and equipped with a 3.6L engine and 6-speed manual transmission, that exhibit a too-low engine oil temperature after an extended idle. The MIL may be on. DTC P1239 (engine oil temp too low) may be stored. The starter protection feature will be disabled and there may be a perceived misfire under normal acceleration.

    Reprogram the PCM with the latest calibration using software level 15.04 or higher.

    About the Author

    Information courtesy of Mitchell 1

    Information for Technical Service Bulletins comes from ProDemand, Mitchell 1's auto repair information software for domestic and import vehicles. Headquartered in San Diego, Mitchell 1 has provided quality repair information solutions to the automotive industry since 1918.

    About the Author

    Mike Mavrigian | Motor Age Editor

    Mike Mavrigian has written thousands of automotive technical magazine articles involving a variety of  specialties, from engine building to wheel alignment, and has authored more than a dozen books that crisscross the automotive spectrum. Mike operates Birchwood Automotive, an Ohio shop that builds custom engines and performs vintage vehicle restorations. The shop also features a professional photo studio to document projects and to create images for articles and books.

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