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Service bulletins for the 2014 Jeep Cherokee

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

563 on file from NHTSA, as of 2026-10-19.

About P1239 on the 2014 Jeep Cherokee: what the code means, and the bulletins and recalls about the same components.

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Only bulletins with trouble code: P1239 are shown. Show all

Bulletins, newest first
18031142022-09-26. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); FUEL SYSTEM, GASOLINE; ELECTRICAL SYSTEM. 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.
18-031-142022-08-29. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION; EXTERIOR LIGHTING. Flash: MIL Illumination P1239- Engine Oil Temperature Too Low. 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 The following system improvements have also been included in this software release: ? Corrected a generic scan tool display issue regarding Mode 6 data accuracy
18-031-142022-08-22. Service bulletin. EXTERIOR LIGHTING; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE:SOFTWARE. Flash: MIL Illumination P1239- Engine Oil Temperature Too Low. 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 The following system improvements have also been included in this software release: ? Corrected a generic scan tool display issue regarding Mode 6 data accuracy
18-031-142018-06-11. Service bulletin. POWER TRAIN; ENGINE AND ENGINE COOLING. Flash: MIL Illumination P1239- Engine Oil Temperature Too Low. 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 The following system improvements have also been included in this software release: ? Corrected a generic scan tool display issue regarding Mode 6 data accuracy
18-031-14 REV. A2018-06-11. Service bulletin. ENGINE AND ENGINE COOLING. 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.
18-093-16 REV. A2017-11-03. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). Flash: Powertrain Diagnostic And System Enhancements This bulletin involves reprogramming the Powertrain Control Module (PCM) with the latest available software. The customer may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find, one or more of the following DTCs set in the PCM memory: P0116 - Coolant Temperature Sensor Performance. P0335 - Crankshaft Position Sensor Circuit. P2610 - PCM Internal Engine Off Timer Performance. U1424 - Implausible Engine Torque Signal Received. 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.In addition, some customers may experience one or more of the following conditions: Possible rough idle when engaging Drive while in 4 LOW after a cold start. Corrected a generic scan tool display issue regarding Mode 6 data accuracy.
18-060-162017-11-03. Service bulletin. POWER TRAIN; ELECTRICAL SYSTEM; STRUCTURE; EQUIPMENT. Flash: Powertrain Diagnostic And System Improvements 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 the following Diagnostic Trouble Code (DTCs) set in the PCM memory: · **P0335 - Crankshaft Position Sensor Circuit (Sales Code ERB). · P0300 - Multiple Cylinder Misfire (Sales Code ERB). · P0306 - Cylinder 6 Misfire. With automatic transmission (Sales Code ERB) (Sales Code DGJ). · P0456 - EVAP System Small Leak (Sales Code ERB).** · P2097- Downstream Fuel Trim System 1 Rich. · P2099- Downstream Fuel Trim System 2 Rich. · P0830- Clutch Pedal Switch ?A? Circuit. With manual transmission (Sales Code DEH). · P1239- Engine Oil Temperature Too Low. · U0140 - Lost Communication With Body Control Module. · Corrected a generic scan tool display issue regarding Mode 6 data accuracy.
18-093-162016-11-08. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; POWER TRAIN. "FLASH: POWERTRAIN DIAGNOSTIC AND SYSTEM ENHANCEMENTS THIS BULLETIN INVOLVES REPROGRAMMING THE POWERTRAIN CONTROL MODULE (PCM) WITH THE LATEST AVAILABLE SOFTWARE. A SMALL NUMBER OF CUSTOMERS MAY EXPERIENCE A MALFUNCTION INDICATOR LAMP (MIL) ILLUMINATION. UPON FURTHER INVESTIGATION THE TECHNICIAN MAY FIND THE FOLLOWING DIAGNOSTIC TROUBLE CODES (DTCS) SET IN THE PCM MEMORY: · **P0335 - CRANKSHAFT POSITION SENSOR CIRCUIT. · P2610 - PCM INTERNAL ENGINE OFF TIMER PERFORMANCE. · U1424 - IMPLAUSIBLE ENGINE TORQUE SIGNAL RECEIVED.** · 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. IN ADDITION, SOME CUSTOMERS MAY EXPERIENCE ONE OR MORE OF THE FOLLOWING CONDITIONS: · POSSIBLE ROUGH IDLE WHEN ENGAGING DRIVE WHILE IN 4 LOW AFTER A COLD START. · CORRECTED A GENERIC SCAN TOOL DISPLAY ISSUE REGARDING MODE 6 DATA ACCURACY."

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.