SSM 2021–2023 F150 Illuminated Powertrain Malfunction — 55059

[F150 Tremor Forum]

Special Service Message · SSM 55059

This is a Special Service Message, not a recall. SSMs are informational notes Ford sends dealers about a known condition or a change in procedure. They are not repair orders, and they don't by themselves change what is covered.

Published: Aug 3, 2026
Applies to: F-150 (2021–2023 model years)

Restrictions stated in the source:

• Engine: 3.5L
• Equipment: equipped with a 3

Also listed in the source (outside this forum's coverage): Explorer 2020–2026

Summary (official text)​

Some 2021-2023 F-150 vehicles equipped with a 3.5L PowerBoost engine, 2020-2026 Explorer vehicles equipped with a 3.3L hybrid engine, and 2020-2023 Lincoln Aviator vehicles equipped with a 3.0L EcoBoost hybrid engine may exhibit an illuminated powertrain malfunction (wrench) indicator with diagnostic trouble code (DTC) P0A1E stored in the powertrain control module (PCM). The vehicle may be unable to enter electric-only drive modes as expected during normal drive cycles. This may be due to the belt integrated starter generator (BISG). For vehicles with this condition, follow the necessary Pinpoint Test in Workshop Manual (WSM), Section 303-06 for DTC P0A1E and repair the vehicle as directed. Note that previous replacement of the BISG does not negate the need for subsequent BISG replacements if directed to do so by the appropriate Pinpoint Test diagnostics. Engineering is investigating this BISG quality concern. Monitor PTS for updates regarding this investigation.

Sources​

• SSM55059 (PDF, NHTSA document 11035556) — Aug 3, 2026

Details from NHTSA as of Oct 9, 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.