Service bulletin 18-040-17 REV. A

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)
Type	Service bulletin
NHTSA id	10219907
Published by NHTSA	2022-09-15
Manufacturer's number	18-040-17 REV. A
Manufacturer's date	2017-06-24
NHTSA component	POWER TRAIN; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM)

NHTSA's summary

Flash: 6.4L Powertrain Diagnostic and System Enhancements This bulletin involves reprogramming the Powertrain Control Module (PCM) with the latest available software. This bulletin fixes all vehicles listed and also contains an optional software path for situations where the customer is specifically complaining of a drone noise, shudder, pulsation, or vibration under light throttle applications, while vehicle is operating in Multi Displacement System/Economics (MDS/ECO)mode (optional software available for D2&DJ vehicles).There will be two separate software options displayed on the wiTECH flash tab. The software file released for this condition contains the verbiage ?MDS NOISE?. The other file is the standard software that does not contain improvements for the drone/shudder concern. If for some reason the customer finds this shudderimprovement objectionable, the PCM software may be returned/reflashed to the standard version.Both software versions will address the remaining conditions noted in the bulletin.A small number of customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that the following DTCs have been set:P1404 - EGR Close Position Performance. P0404 - EGR Position Sensor Performance. P0405 - EGR Position Sensor Circuit Low. P0406 - EGR Position Sensor Circuit High. P2172 ? High Airflow/Vacuum leak detected. P0870 - OD Hydraulic Pressure Test (66RFE Only). This software update also includes the following enhancements:Reduced downhill gear hunting when using cruise control. Reduced drone noise at minimum converter clutch operating speed. Reduced low speed drone noise. Improved Exhaust Gas Recirculation (EGR) valve control at maximum desired lift. This will help reduce, long crank/start time. Improvements to engine idle quality such as rough idle after high altitude start and stability of engine RPM at idle.

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

Transmission and driveline, Automatic transmission, Transmission control module

Trouble codes named

P0404, P0405, P0406, P0870, P1404, P2172

Vehicles listed
RAM 2500	2017
RAM 3500	2017
RAM 4500	2017
RAM 5500	2017

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

Recalls for the same vehicles and component
18V100000	2018-02-08. POWER TRAIN:AUTOMATIC TRANSMISSION
17V821000	2017-12-20. POWER TRAIN:AUTOMATIC TRANSMISSION:LEVER AND LINKAGE:COLUMN SHIFT

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
S1918000003RevA	2022-10-17. Service bulletin. Revision A: Intermittent Engine Buck, Surge, or Misfire.
9003820	2022-07-25. Service bulletin. Shifter Tower If you are working on a vehicle with a noise/rattle or noise/vibration complaint in 5th or 6th gear on decel, the field has had success by simply removing and reinstalling the shift tower from the transmission. Leaving the boot on the tower of the shifter intact, remove the two external boots first to get to the shifter tower. Please attempt this repair first if you have this concern. Follow the service instructions to ensure proper installation of the tower.
S1625000007 Rev.	2021-03-15. Service bulletin. Malfunction Indicator Lamp (MIL) Illumination. Diagnostic Trouble Code (DTC) P207F ? Reductant Quality Performance Set.
68211004A	2018-11-26. Service bulletin. Shifter - Automatic Trans Before this part is replaced for any issue please call John Grzecki on cell (248) 379- 0969. If you do not receive a return call within 15 minutes, proceed with the repair. Please be sure to accurately record any DTCs identified with the scan tool and document them on the repair order.