Ram bulletin 1807123
What it saysFlash: Powertrain Control Module (PCM) Updates Customers may experience a Malfunction Indicator Lamp (MIL) illumination. NHTSA’s full summary ↓
Ram filed this with NHTSA as a service bulletin dated Jun 3, 2023, received Aug 21, 2023, about the power train. It names 4 model years (2019). A service bulletin is not a safety recall: it is the manufacturer telling its dealers how to diagnose or repair a condition, and whether the work is paid for depends on the warranty in force. Quoting the number at a service desk can save a diagnosis.
Get the next Ram bulletin for your model by email Weekly, only when something new is filed. Nothing else; one-click unsubscribe.
What the bulletin says
Source: NHTSA's summary of the manufacturer's communicationFlash: Powertrain Control Module (PCM) Updates Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that one or more of the following Diagnostic Trouble Codes (DTCs) have been set: ? P1404 - EGR Close Position Performance. ? P0456 - EVAP System Small Leak. NOTE: If DTC P0456 is present use the wiTECH Small Leak Verification test (SLVT) to determine if a leak is present in the system. In addition, the customer may notice one or more of the following conditions: ? **Power Take Off (PTO) disable to high engine oil temperature (DD DP Only).** ? Abrupt gear engagement when transitioning from Park to Drive/Reverse gear state in Power Takeoff (PTO) Mode. ? Vehicle hesitation or surge at low vehicle speeds. ? Engine hesitation when turning steering wheel to end stop. ? Powertrain bump or hesitation around 16-24 kph (10-15 mph) vehicle speed. May be reported as rough or harsh transmission shifting in the same vehicle speed range This bulletin involves reprogramming the Powertrain Control Module (PCM) with the latest available software.
Trouble codes it names: P0456 P1404
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| 1807123 | Service bulletin | Jun 3, 2023 | 10241064 | not found |
The summary is NHTSA’s abstract of the document, as filed under 49 CFR 579.5. One communication is usually filed as several documents — the bulletin, a dealer notice, an owner letter — and the number on any of them finds this page. A PDF link is shown only once NHTSA’s own server has been seen to serve that document; the rest are checked over the following nights. Quote the number at a service desk; it is what the dealer’s system is keyed on.
Doing the repair yourself, or pricing it before the shop does? Search the part by fitment on eBay Motors — the listing and the price are the seller’s.
Find the control module (tcm/pcm/tecm) for the 2019 2500 →Affiliate disclosure: some links on this page are affiliate links. If you request a quote or buy through them we may earn a commission at no extra cost to you. Nothing on this page changes because of it.
Model years it names
Source: as the manufacturer filed themAlso filed against model years this site has no page for: 2019 Ram 4500; 2019 Ram 5500.
A vehicle page’s bulletin list shows the newest few communications filed against that model year; the count there is every one.
Email me new Ram bulletins for one of these models
A weekly email, sent only in a week when Ram files something new with NHTSA for the model you pick — service bulletins, campaigns, warranty extensions, over-the-air notices, every model year. Nothing else is sent; one-click unsubscribe in every message. Separate from recall alerts.
What owners reported
Source: NHTSA complaint databaseOwners of the 2 model years this bulletin names have filed 329 complaints with NHTSA since 2015. 97 of them name Electrical System, Power Train — the same broad component group this bulletin is filed under. NHTSA groups complaints coarsely, so that means the same area of the vehicle, not necessarily the same fault.
On the 2019 Ram 2500, the 13 owners who gave an odometer reading for Electrical System reported it at a median of 9,500 miles. That figure is one model year’s, not the whole range this bulletin covers — medians from different model years are not averaged.
While in motion on highways and city streets, the uconnect 4c nav system will freeze, reboot or malfunction preventing control of the stereo volume (cannot turn down or off), prevent management of towing settings, disables controls for seat and steering wheel heating (cannot turn off or change preferences), obstructs bluetooth call…
2019 Ram 2500 · Electrical System · filed with NHTSA Mar 2, 2020
This surging can cause a loss of control in winter conditions (snow/ice). Additional EPA concern being the engine light stays on which hides any emissions equipment failures. To date chrysler has not been able to provide an eta for the needed engine control software fix needed
2019 Ram 3500 · Power Train · filed with NHTSA Sep 11, 2020
Transmission intermittently drops out of gear. Most of the time this is when in reverse and moving backwards. All of a sudden you realize you are no longer moving backwards and in some cases rolling forward.
2019 Ram 2500 · Power Train · filed with NHTSA Apr 23, 2020
A complaint is one owner’s account, not a defect finding, and a bulletin is not a recall. Nothing here says this bulletin was issued because of these complaints, or that the repair it describes fixed them. Complaint files on this site begin in 2015.
More bulletins about the power train
Source: same model, same component group65 other manufacturer communications filed against these Ram models under the same component group (power train), newest first. The eight newest are listed; the rest are on the Ram list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| 114739 | Service bulletin | Sep 24, 2026 | TRANSMISSION KIT - WITH TORQUE CONVERTER |
| 08-302-26 | Service bulletin | Aug 1, 2026 | Flash: Electronic Shift Module (ESM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must… |
| 18-067-26 | Service bulletin | Jul 14, 2026 | Flash: Powertrain Control Module (PCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle mus… |
| 18-066-26 | Service bulletin | Jul 8, 2026 | Seed Request Denied During Technicians may experience the following: SYMPTOM: ● The scan tool displays the message "Seed Request denied" whe… |
| 9100841 | Service bulletin | Jun 25, 2026 | HD Front and Rear Prop Shafts Increase U-Joint Usage If customer concern diagnosis leads to suspect u-joint issue or failure with the prop s… |
| 18-002-26 REV. B | Service bulletin | Jun 24, 2026 | Flash: Powertrain Control Module (PCM) Updates Customers may experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle may… |
| 21-039-26 | Service bulletin | May 8, 2026 | Replace K1 Clutch / Input Shaft Assembly Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhi… |
| 21-029-26 REV. A | Service bulletin | May 1, 2026 | Flash: Transmission Control Module (TCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle m… |
Quote the number at the service desk. It is what the dealer’s system is keyed on.
Every manufacturer communication NHTSA holds for Ram, by the number printed on the letter.
Common questions
Source: NHTSA, 49 CFR 579.5Is Ram 1807123 a recall?
No. A service bulletin is a manufacturer communication filed with NHTSA under 49 CFR 579.5; a safety recall carries an NHTSA campaign number (two digits, a letter, six digits) and a federal duty to repair for free. Check the vehicle’s recalls by VIN at nhtsa.gov/recalls, or on its page here.
Is the 1807123 repair free?
Not automatically. A service bulletin describes how to diagnose or repair a condition; who pays depends on the warranty in force, any extension, and the dealer. Quoting the number can save a diagnosis either way.
Which vehicles does 1807123 cover?
The manufacturer filed it against 4 model years: 2019 Ram 2500, 2019 Ram 3500, 2019 Ram 4500, 2019 Ram 5500. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.