TSBs

Jeep Low Oil Temperature

Oct. 29, 2021

Owners of 2015 Jeep Wrangler vehicles equipped with a 3.6L engine and 6-speed manual transmission, and built on or before March 16, 2015, may experience a malfunction indicator lamp (MIL) on.

Information courtesy of Mitchell 1

Mike Mavrigian

Owners of 2015 Jeep Wrangler vehicles equipped with a 3.6L engine and 6-speed manual transmission, and built on or before March 16, 2015, may experience a malfunction indicator lamp (MIL) on. The technician may find Diagnostic Trouble Code (DTC) P1239 (engine oil temperature too low) even after extended idling. There may be a perceived misfire under normal acceleration, and the starter protection feature will be disabled.

Using a scan tool, check for other DTCs. Record and correct as needed before proceeding. Reprogram the power-train control module (PCM) with the latest available software 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.