Harsh engagement/harsh shift/delayed shift
Ford technical service bulletin TSB 21-2420 for 2020 Ford F-250 SD, 2020 Ford F-350 SD and 2020 Ford F-450 SD and others.
- Bulletin number
- TSB 21-2420
- Component
- Equipment
- Summary
- Some 2020 F-Super Duty vehicles equipped with a 10R140 automatic transmission may exhibit a harsh engagement/harsh shift/delayed shift. It is possible the vehicle may also have an illuminated malfunction indicator lamp (MIL) and diagnostic trouble codes (DTCs) P0729, P0731, P0732, P0733, P0734, P0735, P0736, P076F, P07D9, P07F7, P2700, P2701, P2702, P2703, P2704 and/or P2705 stored in the powertrain control module (PCM) or transmission control module (TCM). This may be due to sticking valves in the main control valve body. To correct the condition, follow the Service Procedure steps to perform the transmission accelerated main control break-in routine for the appropriate clutches and/or overhaul main control valve body.
Vehicles covered
- Ford F-250 SD 2020 2020
- Ford F-350 SD 2020 2020
- Ford F-450 SD 2020 2020
- Ford F-550 SD 2020 2020
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