CLIO TCE 90 2016 - check engine is on : fault: P0315

Hello!,
CLIO TCE 90 2016 manual.
Im getting this error code from my clio using a simple obd2 scanner:
P0315 Crankshaft Position System Variation Not Learned

when clearing, it returns on the next engine start.
the car starts and drive normally.
the crank sensor was taken out and cleaned - same error persists

tried to fire the engine with the sensor disconnected - the check engine was gone - and the car took 10 seconds to...

CLIO TCE 90 2016 - check engine is on : fault: P0315

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