Try to clear the light with a OBD2 reader
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unplug and refit each sensor at it's appropriate wheel. after unplugging the battery for 5 minutes.
Check for appropriate clearances between the sensor and the pickup on the wheel using a peeler gauge.
make sure the geometry is correct on all four wheels as it could relate to the problem.
Was it in a accident is the sub frame straight. Sounds like it would be electrically related. Has the problem been occuring for the last 6 months?

Mini Cooper Obd2 Engine Code Reader & Reset Scan Tool
Check for appropriate clearances between the sensor and the pickup on the wheel using a peeler gauge.
make sure the geometry is correct on all four wheels as it could relate to the problem.
Was it in a accident is the sub frame straight. Sounds like it would be electrically related. Has the problem been occuring for the last 6 months?