Illuminated malfunction indicator lamp (MIL) with diagnostic trouble codes (DTCs) P0420 and/or P0430...
Ford technical service bulletin TSB 21-2381 for 2020-2021 Ford Expedition and 2020-2021 Lincoln Navigator.
- Bulletin number
- TSB 21-2381
- Component
- Power train: automatic transmission: control module (TCM/PCM/tecm)
- Summary
- Some 2020-2021 Expedition/Navigator vehicles may exhibit an illuminated malfunction indicator lamp (MIL) with diagnostic trouble codes (DTCs) P0420 and/or P0430 stored in the powertrain control module (PCM). This may be due to high sulfur content in the fuel. To correct the condition, follow the Service Procedure to de-sulfate the catalytic convertors.
Owners of these vehicles have filed 409 complaints in the transmission category.
Vehicles covered
- Ford Expedition 2020-2021 20202021
- Lincoln Navigator 2020-2021 20202021
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