Ford Ranger 2019–2021 — technical service bulletin
Bulletin TSB 21-2147 · NHTSA communication 10198581 · issued Jun 8, 2021
Technical service bulletin
communication type
Power Train
component
2019–2021
model years
3
vehicle entries
Official 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.
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.