TSB 2021–2026 F-150 "Active Air Dam System Fault See Manual" Warning Message Displayed… — 26-2448

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Technical Service Bulletin · TSB 26-2448

This is a Technical Service Bulletin, not a recall. A TSB tells dealers how to diagnose and repair a specific symptom when a truck comes in with it. It doesn't mean every truck listed has the problem, and it doesn't by itself make the repair free -- coverage depends on your warranty and the dealer's diagnosis.

Published: Oct 27, 2026
Applies to: F-150 (2021–2026 model years)

Summary (official text)​

This bulletin supersedes 25-2236. Reason for update: To consolidate prior articles and revise the Service Procedure to add an AAD blade limit strap. Some of the vehicles listed in the model statement above may exhibit at least one of the following conditions: •"Active Air Dam System Fault See Manual" warning message displayed in the instrument panel cluster (IPC) •AAD hanging/not retracting •Diagnostic trouble codes (DTCs) C0604 and/or C0630 stored in the powertrain control module (PCM) •Stuck/inoperative AAD blade •Deformed AAD blade and/or static lower valance that inhibits normal up/down function of the AAD blade This may be due to the software in the PCM, damaged fasteners and/or a deformed AAD blade.

Supersedes: TSB 25-2236

Sources​

• TSB 26-2448 (PDF, NHTSA document 11038916) — Oct 27, 2026

Details from NHTSA as of Nov 4, 2026. If NHTSA or Ford revises this notice, this post is updated and significant changes are noted in a reply. The linked documents are the authority, and a dealer can confirm whether it applies to your VIN.

Have you experienced this issue with your truck? Let us know your model year and engine, plus any diagnosis or repair details.