NHTSA Complaint #11716402 — 2017 FORD F-150

While driving, my 2017 Ford F‑150 experienced a sudden loss of the Output Shaft Speed (OSS) sensor signal, causing the transmission to stay stuck in a higher gear and triggering the wrench light. The truck lost power and would not shift properly. A diagnostic scan showed two transmission codes: one for the OSS sensor and a second code indicating an intermittent electrical signal drop. I contacted a Ford dealer before the repair, described the symptoms, and asked for an estimate. The service advisor did not disclose any known issues and never called me back after saying he would check parts availability. These symptoms match the known failure pattern of the molded lead frame in the 6R80 transmission. My truck exhibited intermittent behavior, harsh shifting, and unsafe drivability. I had to pay $1,250 out of pocket to replace the lead frame to restore normal operation. I later learned that NHTSA has opened an Engineering Analysis into 2015–2017 F‑150 trucks for this exact issue (OSS signal loss due to internal electrical degradation of the lead frame). My vehicle’s symptoms, diagnostic codes, and required repair are consistent with the defect under investigation. This failure creates a safety hazard because the truck can suddenly lose the ability to accelerate or shift correctly, especially in traffic or at highway speeds. I am requesting that NHTSA include my vehicle in the investigation and that Ford be required to address this defect.