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Ford Explorer CAT Sensor

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Some 2014-2015  Ford Explorer vehicles equipped with a 3.5L or 3.7L Ti-VCT engine may exhibit an illuminated MIL with DTC P0138 (bank 1 CMS) and/or P0158 (bank 2 CMS) stored in the PCM memory.

Connect your scan tool and check for DTCs. Address any non-related DTCs before continuing.  Replace the affected catalyst monitor sensor (CMS).

The sensors are available as follows:

Bank 1 CMS......BE5Z-9G444-B

Bank 2 CMS......BE5Z-9G444-A

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