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Service bulletin 18-091-16

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 id10136532
Published by NHTSA2018-05-14
Manufacturer's number18-091-16
Manufacturer's date2016-07-26
NHTSA componentENGINE AND ENGINE COOLING:EXHAUST SYSTEM; POWER TRAIN; FUEL SYSTEM, GASOLINE; ELECTRICAL SYSTEM:STARTER ASSEMBLY:SOLENOID

NHTSA's summary

Flash: Powertrain Diagnostic And System Improvements This bulletin involves reprogramming the Powertrain Control Module (PCM) with the latest available software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that the following Diagnostic Trouble Codes (DTCs) have been set. Several software improvements are available for the following conditions. The Following DTC has been changed from a two trip fault to a one trip fault: · U1A24 - Lost Communication With Ammonia Sensor. Prevent or reduce MIL illumination when no defect is present for the following DTCs. These faults have been changed from a one trip fault to a two trip fault: · P0201 - P0206 - Fuel Injector X Circuit/Open. · P049D - EGR Control Position Exceeding Learning Limit. · P0711 - Transmission Temperature Sensor Performance. · P0712 - Transmission Temperature Sensor Low. · P0713 - Transmission Temperature Sensor High. · P0714 - Transmission Temperature Sensor Intermittent. · P0740 - TCC Out Of Range. · P0869 - Line Pressure High. · P0933 - Hydraulic Pressure Sensor Range/Performance. · P0934 - Line Pressure Sensor Circuit Low. · P0935 - Line Pressure Sensor Circuit High. · P1775 - Solenoid Switch Valve Latched In TCC Position. · P1776 - Solenoid Switch Valve Latched In LR Position. · U0100 - Lost Communication With ECM/PCM. · U0002 - CAN C Bus Off performance - Bus Off. Improvements to prevent or reduce MIL illumination when no defect is present for: · **P2281 - Air Leak Between MAF And Throttle Body. · P218F - Reductant No Flow Detected. · P242F - Diesel Particulate Filter Restriction - Ash Accumulation. · P20E8 - (Diesel Exhaust Fluid) Reductant Pressure Too Low. · P202E - Diesel Exhaust Fluid) Reductant Injector Performance. · P209F - Diesel Exhaust Fluid) Reductant Tank Heater Control Circuit Performance. · P218F - Reductant No Flow Detected.**

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, Exhaust and emissions, Fuel system, Transmission and driveline, Starter

Trouble codes named

P0201, P0206, P049D, P0711, P0712, P0713, P0714, P0740, P0869, P0933, P0934, P0935, P1775, P1776, P202E, P209F, P20E8, P218F, P2281, P242F, U0002, U0100, U1A24

Vehicles listed
RAM 25002013
RAM 35002013

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