March 30, 2021 Service bulletin

Illuminated malfunction indicator lamp (MIL) with diagnostic trouble code (DTC) P0420 stored in the...

Ford technical service bulletin TSB 21-2021 for 2019-2020 Ford Ranger.

Bulletin number: TSB 21-2021
Component: Engine and engine cooling: exhaust system: emission control: catalytic convertor
Summary: Some 2019-2020 Ranger vehicles may exhibit an illuminated malfunction indicator lamp (MIL) with diagnostic trouble code (DTC) P0420 stored in the powertrain control module (PCM). This may be due to various software parameters within the PCM. To correct the condition, follow the Service Procedure to reprogram the PCM and replace the catalytic converter.

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