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i have a jeep 2003 grand cherokee has a oxygen sensor sensor 1 bank 1 code have replaced the sensor with a OEM jeep sensor and PMC and still the light on it is a 4.0 6 cylinder
 

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2019 Jeep Grand Cherokee Trailhawk
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Have you tried disconnecting the battery or using a scan tool to clear the CEL?
 

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Have you tried disconnecting the battery or using a scan tool to clear the CEL?
yes it goes out and stays off once i reset the PCM......if i dont reset it ......then in the afternoon it goes off by it self......then the next day it comes back on.....
 
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