Ford bulletin TSB 25-2146
What it saysThis article supersedes 23-2132 to update the labor times from M-time to M-Time with a limit. NHTSA’s full summary ↓
Ford filed this with NHTSA as a service bulletin dated Apr 11, 2025, received Apr 16, 2025. It names 6 model years (2018–2023). 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 communicationThis article supersedes 23-2132 to update the labor times from M-time to M-Time with a limit. Some of the vehicles listed in the Model statement above may exhibit at least one of the following conditions: * "Exhaust Mode Selection Not Available" messages * Illuminated malfunction indicator lamp (MIL) with diagnostics trouble codes (DTCs) P26C5, P26C6, P26FE, P2BF9, P2BFB, P26C7, P2BF5, P2BF8, P2BFD and/or P2BFA. This may be due to an improperly seated exhaust system.
Trouble codes it names: P26C5 P26C6 P26C7 P26FE P2BF5 P2BF8 P2BF9 P2BFA P2BFB P2BFD
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| TSB 25-2146 | Service bulletin | Apr 11, 2025 | 11017057 | PDF, 547 KB |
What the document itself lists
Parts the bulletin names
| Part number | Description | Qty | Find it |
|---|---|---|---|
| W520111-S424 | Exhaust Actuator Nuts | — | eBay Motors → |
| W711687-S300 | Rear Underbody Shield Tree | — | eBay Motors → |
| W718128-S417 | Rear Underbody Shield Push Pin | — | eBay Motors → |
| KR3Z-14A411-G | Exhaust Actuator Harness-GT500/Mach | — | eBay Motors → |
| JR3Z-14A411-H | Exhaust Actuator Harness-2.3L/5.0L | — | eBay Motors → |
| JR3Z-6554-A | Exhaust Actuator Service Kit | — | eBay Motors → |
| KR3Z-5230-P | Muffler and Tailpipe Assembly-GT500 | — | eBay Motors → |
| JR3Z-5230-FC | Muffler and Tailpipe Assembly-5.0L | — | eBay Motors → |
| KR3Z-5230-H | Muffler and Tailpipe Assembly-2.3L | — | eBay Motors → |
| KR3Z-5230-M | Muffler and Tailpipe Assembly-5.0L | — | eBay Motors → |
| MR3Z-5230-C | Muffler and Tailpipe Assembly-5.0L | — | eBay Motors → |
| MR3Z-5230-E | Muffler and Tailpipe Assembly-5.0L | — | eBay Motors → |
| BR3Z-5A231-B | Exhaust Clamp-2.3L | — | eBay Motors → |
| FR3Z-5A231-A | Exhaust Clamp-5.0L | — | eBay Motors → |
Labour operation and the time the manufacturer allows
| Operation | Description | Time |
|---|---|---|
| MT252146 | Actual Time Up To | 3.3 hrs |
Read by machine from the document NHTSA serves (5 pages), read Sep 29, 2026. A part number is shown only where it matches Ford’s own catalogue shape, an operation only with its code and time, and a description only where the reader got it whole; anything it could not settle is left out, and the PDF is the record. Times are the manufacturer’s warranty allowances, not a quote. Listings and prices on eBay Motors are the seller’s.
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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 themA 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 6 model years this bulletin names have filed 582 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 Ford, by the number printed on the letter.
Common questions
Source: NHTSA, 49 CFR 579.5Is Ford TSB 25-2146 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 TSB 25-2146 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 TSB 25-2146 cover?
The manufacturer filed it against 6 model years: 2023 Ford Mustang, 2022 Ford Mustang, 2021 Ford Mustang, 2020 Ford Mustang, 2019 Ford Mustang, 2018 Ford Mustang. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.