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Service bulletin 18-055-14

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10139783
Published by NHTSA2018-06-11
Manufacturer's number18-055-14
Manufacturer's date2014-10-11
NHTSA componentPOWER TRAIN; ENGINE AND ENGINE COOLING

NHTSA's summary

Flash: Malfunction Indicator Lamp (MIL) Illumination, P06EF-Engine Restart Performance This bulletin involves reprogramming the Powertrain Control Module (PCM) with new software. The customer may experience that the vehicle may not auto-start after the first auto-stop. This condition may occur if someone tried to start the vehicle with the engine already running. The vehicle will restart if the ignition is cycled off and than back on. A MIL lamp may turn on and a message ?Service start/stop? may be displayed. On further inspection DTC P06EF-Engine Restart Performance, may be found.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Engine, Transmission and driveline

Trouble codes named

P06EF

Vehicles listed
JEEP CHEROKEE2015

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Recalls for the same vehicles and component
20202612020-06-12. Powertrain
20V3430002020-06-11. POWER TRAIN:DRIVELINE:DIFFERENTIAL UNIT; POWER TRAIN:AUTOMATIC TRANSMISSION
20182692018-05-17. Engine
20163612016-07-13. Powertrain
16V5290002016-07-12. POWER TRAIN:AUTOMATIC TRANSMISSION
15V6760002015-10-19. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM
20154752015-10-16. Engine

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
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09-018-242024-09-04. Service bulletin. "2.4L Excessive Oil Consumption XB1 Warranty Extension The customer may describe one or more of the following: ● Oil pressure low indicator lamp illumination between oil changes. ● Excessive oil consumption. This bulletin involves performing an oil consumption verification test and possibly replacing the long block."
S1408000384 REV.F2024-07-02. Service bulletin. "Start Stop Charging Warning Lamp Illuminated On, Intelligent Battery Sensor (IBS) State of Charge (SOC) Inaccurate, Battery Charging Message, Presence of IBS related Diagnostic Trouble Codes (DTCs), or Battery Warning Lamp On "
S23250000072024-01-08. Service bulletin. MIL/check engine lamp comes on after performing U90 recall PCM software update.
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S17210000162023-12-18. Service bulletin. Service 4wd Light On, AWD System Service Required Message Illuminated. Diagnostic Trouble Code (DTC) C14A7-97 PTU Motor Component Or System Operation Obstructed Or Blocked, Set.
S23250000072023-10-30. Service bulletin. MIL/check engine lamp comes on after performing U90 recall PCM software update.
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21014232023-08-21. Service bulletin. Power Transfer Unit (PTU) Broken Input Spline XJ1 Warranty Extension Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation, a technician may find one or more of the following Diagnostic Trouble Codes (DTCs) have been set: ? P1720-00 - Output Speed Sensor Wheel Speed Rationality. ? P215C-00 - Output Shaft Speed Wheel Speed Correlation. This bulletin involves replacing the PTU assembly with an updated part.
914902023-08-21. Service bulletin. FCA Caribbean Warranty Bulletin ID-23-11 (XJ1) Power Transfer Unit (PTU) - Select 2014 - 2017 Jeep Cherokee (KL)