# Service bulletin SSM 49778

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

- Type: Service bulletin
- NHTSA id: 10194388
- Published by NHTSA: 2021\-06\-01
- Manufacturer's number: SSM 49778
- Manufacturer's date: 2021\-05\-03
- NHTSA component: FUEL SYSTEM, DIESEL:STORAGE:TANK ASSEMBLY; FUEL SYSTEM, GASOLINE:STORAGE:TANK ASSEMBLY:FILLER PIPE AND CAP

## NHTSA's 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.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2021/MC-10194388-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2021/MC-10194388-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Fuel system, Fuel tank

## Trouble codes named

P0457

## Vehicles listed

- 2021 to 2022 FORD E\-150
- 2021 to 2022 FORD E\-250
- 2021 to 2022 FORD E\-350
- 2021 to 2022 FORD E\-450
- 2021 FORD F\-250 SD
- 2021 FORD F\-350 SD
- 2021 FORD F\-450 SD
- 2021 FORD F\-550 SD
- 2021 FORD F\-600 SD
- 2021 FORD F\-650 SD
- 2021 FORD F\-750 SD

## Recalls for the same vehicles and component

- [22V925000](/recalls/nhtsa/22V925000.md), 2022-12-14: FUEL SYSTEM, GASOLINE:STORAGE:TANK ASSEMBLY

## Other bulletins for the same vehicles and component

- [SSM 50977](/bulletins/10216961.md), 2022-08-02, Service bulletin: POWER TRAIN:MANUAL TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); EQUIPMENT; FUEL SYSTEM, GASOLINE:STORAGE:TANK ASSEMBLY:FILLER PIPE AND CAP; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\). Some 2021\-2022 F\-Super Duty and 2021\-2023 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 has changed, requiring multiple turns to seal properly. Advise the customer to turn the fuel filler cap clockwise until there is at least one audible click to seal properly. For further diagnostics, refer to Workshop Manual \(WSM\), Section 303\-13 \- pinpoint test HX.
- [SSM 49785](/bulletins/10194412.md), 2021-06-01, Service bulletin: FUEL SYSTEM, DIESEL:STORAGE:TANK ASSEMBLY; FUEL SYSTEM, GASOLINE:STORAGE:TANK ASSEMBLY:FILLER PIPE AND CAP. Some 2021 F\-Super Duty 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 has changed, requiring multiple turns to seal properly. Advise the customer to turn the fuel filler cap clockwise until there is at least one audible click to seal properly. For further diagnostics, refer to the Powertrain Control/Emissions Diagnosis \(PC/ED\) manual, pinpoint test HX.

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