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Fingerprint diagnostic test fail Galaxy S8 "MFG cal Test"

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I bought a new Galaxy S8 in April this year, and am having problems with the fingerprint sensor.  From the on-board diagnostic tests (by dialing *#0*#), there is a "MFG cal Test" fail.  All other tests pass.  Has anyone encountered this, and if so, what did you do about it?


The  test says:   "MFG cal Test:   Overall:  Spec = 1840~130000:   Result = 530211:   FAIL"

Superuser I
Superuser I

I've not personally encountered that error but if I did I'd look at first clearingbthe system cache files via turning the phone Off and then from a set series of button presses go into the phones system files and clear the cache.


As a last resort back up and remove any relevant Sd card and factory reset.


I wish you all the best with this situation. 



A Samsung Experience Store or Samsung Service Centre can help too.


🌈 Stay Safe  🌈 



My advice comes from being a UK Samsung Phone User.

Current Phone ~

Samsung Note 10+ 5G _256Gb > Model: SM-N976B._ Samsung One Ui 2.1 / Android 10.

Samsung Gear s3 Frontier Watch.
Samsung Galaxy Buds.
Samsung Galaxy Tab A {2016}SM-T580


Thanks for reply.  I've not done what you say yet but I will quite soon.  In the meantime, and for the record, I contacted Samsung Support and tried to get them to answer what the fix was for this error and what the error meant, but all they would do is suggest I take it or send it to a service centre (60 miles away).  The sensor is highly erratic and works for  a couple of days and then won't work.  I'll post here any success with clearing the cache and a full reset.

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