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Service bulletin 18-048-15

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 id10150604
Published by NHTSA2018-12-10
Manufacturer's number18-048-15
Manufacturer's date2015-06-02
NHTSA componentEXTERIOR LIGHTING; ENGINE; FUEL SYSTEM, GASOLINE; ELECTRICAL SYSTEM

NHTSA's summary

Flash: 2.4L 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 the following symptoms below or a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find one or more of the following Diagnostic Trouble Codes (DTCs). ? P0171 - Fuel System 1/1 Lean. ? P050D - Cold Start Rough Idle. ? Increased RPM on start up. ? Reduced RPM when shifted into drive or reverse when cold.

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

Electrical system, Engine, Fuel system, Lighting

Trouble codes named

P0171, P050D

Vehicles listed
RAM PROMASTER CITY2015

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

Recalls for the same vehicles and component
20161932016-04-29. Lights And Instruments
16V2530002016-04-28. ELECTRICAL SYSTEM:SOFTWARE; EXTERIOR LIGHTING:BRAKE LIGHTS
20161872016-04-27. Electrical

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
S14080003842024-03-18. 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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RecallU902023-05-30. Service bulletin. Emission Recall U90 Catalyst Efficiency