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.
Reported code forms
Manufacturer wording
Source wording can vary by vehicle and suffix. It is shown as written, not as a universal diagnosis.
Jeep
P0298Engine Oil Temperature Too High, set in cold ambient temperaturesJeep
P0298Engine Oil Temperature Too Low Or HighJeep
P0300Multiple Cylinder Misfire, may set at a 1-2 upshift above 6000 RPMJeep
P1239Engine Oil Temperature Too Low, set in cold ambient temperaturesCheck vehicle applicability
A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
| Make | Model | Model year |
|---|---|---|
| Jeep | CHEROKEE | 2014 |