Stellantis bulletin 18-028-25
What it says"Check Engine Light Illuminated - Erroneous Fault Codes Set Customers must experience a Malfunction Indicator Lamp (MIL) illumination. NHTSA’s full summary ↓
Stellantis filed this with NHTSA as a service bulletin dated Jun 5, 2025, received Jun 10, 2025. It names 16 model years across Jeep, Fiat and Alfa Romeo (2021–2025). 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.
One page for every brand it was filed under. Each brand’s bulletins: Jeep · Fiat · Alfa Romeo.
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What the bulletin says
Source: NHTSA's summary of the manufacturer's communication"Check Engine Light Illuminated - Erroneous Fault Codes Set Customers must experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician must find one or more of the following Diagnostic Trouble Codes (DTC)s have been set: ● P012C - Turbocharger/Supercharger Inlet Air Pressure Sensor 1 Circuit Low. ● P012D - Turbocharger/Supercharger Inlet Air Pressure Sensor 1 Circuit High. ● P006C-MAP - Turbocharger Inlet Air Pressure Correlation. "
Trouble codes it names: P012C P012D
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| 18-028-25 | Service bulletin | Jun 5, 2025 | 11019436 | PDF, 105 KB |
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 themJeep 10 model years
Also filed against model years this site has no page for: 2024 Jeep Renegade; 2025 Jeep Renegade.
Fiat 3 model years
Alfa Romeo 3 model years
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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What owners reported
Source: NHTSA complaint databaseOwners of the 14 model years this bulletin names have filed 553 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 Jeep, Fiat and Alfa Romeo, by the number printed on the letter.
Common questions
Source: NHTSA, 49 CFR 579.5Is Stellantis 18-028-25 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 18-028-25 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 18-028-25 cover?
The manufacturer filed it against 16 model years across 3 brands (Jeep, Fiat and Alfa Romeo): 2025 Alfa Romeo Tonale, 2024 Alfa Romeo Tonale, 2023 Alfa Romeo Tonale eAWD, 2023 Fiat 500, 2022 Fiat 500, 2021 Fiat 500 and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.