Ford F-250 SD 2023–2024 — technical service bulletin
Bulletin SSM 52420 · NHTSA communication 10253556 · issued Apr 5, 2024
Technical service bulletin
communication type
Engine and Engine Cooling
component
2023–2024
model years
14
vehicle entries
Official summary
Some 2023-2024 F-Super Duty vehicles may exhibit an illuminated powertrain malfunction (wrench) indicator with diagnostic trouble codes (DTC) P2122, P2123, P2127, P2128, and/or P2138 stored in the powertrain control module (PCM). The vehicle may or may not exhibit a perceived lack of power intermittently. Perform a wiggle test of connector C1580 at the left rear of the engine compartment while the engine is at normal operating temperature. Perform a visual inspection of pins 18 through 29 as well as a terminal fit test using the appropriately sized flex probe. Repair as necessary. Refer to Wir
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.