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Federal filingsHome›Bulletins›Ram› S1425000019 REV. A
Manufacturer communication · Service bulletin

Ram bulletin S1425000019 REV. A

What it saysMalfunction Indicator Lamp (MIL) Illuminated. NHTSA’s full summary ↓

Ram filed this with NHTSA as a service bulletin dated Jan 22, 2025, received Jan 23, 2025. It names 36 model years (2016–2024). 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.

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What the bulletin says

Source: NHTSA's summary of the manufacturer's communication

Malfunction Indicator Lamp (MIL) Illuminated. Diesel Exhaust Fluid (DEF) System Diagnostic Trouble Codes (DTCs) due to Hydrocarbon Contamination.

Kind Service bulletin Manufacturer date Jan 22, 2025 Received by NHTSA Jan 23, 2025 Components —

Document filed under this number

DocumentKindDatedNHTSA idAt NHTSA
S1425000019 REV. AService bulletinJan 22, 202511013055not 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.

Model years it names

Source: as the manufacturer filed them

Also filed against model years this site has no page for: 2016 Ram 4500; 2017 Ram 4500; 2018 Ram 4500; 2019 Ram 4500; 2020 Ram 4500; 2021 Ram 4500; 2022 Ram 4500; 2023 Ram 4500; 2024 Ram 4500; 2016 Ram 5500; 2017 Ram 5500; 2018 Ram 5500; 2019 Ram 5500; 2020 Ram 5500; 2021 Ram 5500; 2022 Ram 5500; 2023 Ram 5500; 2024 Ram 5500.

A vehicle page’s bulletin list shows the newest few communications filed against that model year; the count there is every one.

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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 database

Owners of the 18 model years this bulletin names have filed 6,149 complaints with NHTSA since 2015.

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.

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.

Photo: Christian Buehner / Unsplash

Common questions

Source: NHTSA, 49 CFR 579.5

Is Ram S1425000019 REV. A 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 S1425000019 REV. A 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. Every Stellantis warranty extension on file lists the ones Stellantis has filed.

Which vehicles does S1425000019 REV. A cover?

The manufacturer filed it against 36 model years: 2024 Ram 2500, 2023 Ram 2500, 2022 Ram 2500, 2021 Ram 2500, 2020 Ram 2500, 2019 Ram 2500 and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.