Ford E-150 2021–2022 — technical service bulletin
Bulletin SSM 49778 · NHTSA communication 10194388 · issued May 3, 2021
Technical service bulletin
communication type
Fuel System, Gasoline
component
2021–2022
model years
15
vehicle entries
Official summary
Some 2021 F-Super Duty/F-650/F-750 and 2021-2022 E-Series vehicles equipped with a 6.2L or 7.3L gasoline engine may exhibit an illuminated malfunction indicator lamp (MIL) with diagnostic trouble code (DTC) P0457 stored in the powertrain control module (PCM). This may be due to a loose fuel filler cap. The fuel filler cap design changed for 2021 to require three full turns to properly tighten. Advise the customer of the design change. For further diagnostics, refer to the Powertrain Control/Emissions Diagnosis (PC/ED) manual, pinpoint test HX.
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.