June 8, 2021 Service bulletin

Illuminated malfunction indicator lamp (MIL) with diagnostic trouble codes (DTCs) P0300, P0301, P0302,...

Ford technical service bulletin TSB 21-2147 for 2019-2021 Ford Ranger.

Bulletin number: TSB 21-2147
Component: Electrical system
Summary: Some 2019-2021 Ranger vehicles may exhibit an illuminated malfunction indicator lamp (MIL) with diagnostic trouble codes (DTCs) P0300, P0301, P0302, P0303, P0304 and/or P0316 stored in the powertrain control module (PCM). This may be due to water build up in the spark plug well(s) which can lead to signs of corrosion on ignition system components. To correct the condition, follow the Service Procedure to resolve the source of all DTCs and to install an engine appearance cover.

Owners of these vehicles have filed 60 complaints in the electrical category.

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