# P27B4 on the 2020 Ford F\-350

The bulletins listed name this code in NHTSA's summary, or are about the same components. A bulletin or a recall listed here may apply to the model year. None of it is a diagnosis.

Nobody has written a description of this code yet.

## Bulletins for this model year that name P27B4

- [10201609](https://open.wenmarpro.com/bulletins/10201609), 2021-09-30: This article supersedes TSB 21\-2055 to update the Title, Issue, Action, vehicles affected and production fix date. Some 2020\-2021 F\-Super Duty vehicles equipped with a 6.7L engine built on or before 10\-Feb\-2021 may exhibit an illuminated malfunction indicator lamp \(MIL\) with diagnostic trouble codes \(DTCs\) P0300\-P0308, P0603, P203B, P208B, P208C, P20EE, P2201, P24C2, P27B4, and/or P27B5 stored in the powertrain control module \(PCM\). The vehicle may also exhibit a forced idle condition. This may be due to various strategies within the PCM software. To correct the condition, follow the Service Procedure to reprogram the PCM.
- [10189774](https://open.wenmarpro.com/bulletins/10189774), 2021-04-03: This article supersedes TSB 20\-2336 to update the Title, Issue, Action, vehicles affected and production fix date. Some 2020\-2021 F\-Super Duty vehicles equipped with a 6.7L engine built on or before 10\-Feb\-2021 may exhibit an illuminated malfunction indicator lamp \(MIL\) with diagnostic trouble codes \(DTCs\) P0300\-P0308, P054F, P0603, P203B, P208B, P208C, P20EE, P2201, P24C2, P27B4, and/or P27B5 stored in the powertrain control module \(PCM\). The vehicle may also exhibit a forced idle condition. This may be due to various strategies within the PCM software. To correct the condition, follow the Service Procedure to reprogram the PCM.
- [10180539](https://open.wenmarpro.com/bulletins/10180539), 2020-10-02: Some 2020 F\-Super Duty vehicles equipped with a 6.7L engine built on or before 19\-Aug\-2020 may exhibit an illuminated malfunction indicator lamp \(MIL\) with diagnostic trouble codes \(DTC\) P0300\-P0308, P0603, P203B, P208B, P208C, P2201, P24C2, P27B4, P07F6 and/or P27B5 stored in the powertrain control module \(PCM\). The vehicle may also exhibit a forced idle condition. This may be due to various strategies within the PCM software. To correct the condition, follow the Service Procedure to reprogram the PCM.
- [10172964](https://open.wenmarpro.com/bulletins/10172964), 2020-04-02: Some 2020 F\-Super Duty vehicles equipped with a 6.2L/7.3L gas engine and 10R140 transmission built on or before 5\-Dec\-2019 may exhibit an illuminated malfunction indicator lamp \(MIL\) with diagnostic trouble code \(DTC\) P27B4 stored in the powertrain control module \(PCM\). This may be due to various strategies within the PCM software. To correct the condition, follow the Service Procedure to reprogram the PCM.
- [10172944](https://open.wenmarpro.com/bulletins/10172944), 2020-04-02: Some 2020 F\-Super Duty vehicles equipped with a 6.7L engine built on or before 5\-Feb\-2020 may exhibit an illuminated malfunction indicator lamp \(MIL\) with diagnostic trouble codes \(DTC\) P203B, P2201 and/or DTC P27B4 stored in the powertrain control module \(PCM\). The vehicle may also exhibit a forced idle condition. This may be due to various strategies within the PCM software. To correct the condition, follow the Service Procedure to reprogram the PCM.