Replacing Ford catalytic converter

    July 22, 2024
    Some 2019-2020 Ford Ranger vehicles may exhibit a MIL on with DTC P0420 (catalyst system efficiency) stored in the PCM.
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    Photo courtesy of Ford
    This may be due to various software parameters within the PCM. To correct the condition, reprogram the PCM with the latest software and replace the catalytic converter.
    This may be due to various software parameters within the PCM. To correct the condition, reprogram the PCM with the latest software and replace the catalytic converter.

    Some 2019-2020 Ford Ranger vehicles may exhibit a MIL on with DTC P0420 (catalyst system efficiency) stored in the PCM.

    This may be due to various software parameters within the PCM. To correct the condition, reprogram the PCM with the latest software and replace the catalytic converter. Also inspect condition of the O2 sensor and replace if needed.

    Catalytic converter............................KB3Z-5E212-F

    Catalytic converter gasket................. KB3Z-6L612-A

    Catalytic converter to turbo nuts (3)....W714265-S442

    Stabilizer bar bracket bolt (2)...............W719427-S439

    Stabilizer bar bracket nut (2)................W716936-S442

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    Motor Age Staff

    Motor Age has been publishing technical content for professional automotive technicians since 1899. Our writers have decades of experience and scores of ASE certifications, and they continue to teach new generations of technicians via classrooms all around the globe, as well as through the books and training manuals they've authored. 

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