If the oil-pressure sensor on the VAZ-2105 panel after the scuffle in the snow does not extingule at idle speed, this indicates overheating of the engine oil which is becoming too liquid under the influence of the temperature. It is not necessary to change the oil, especially in conditions of winter, to a more viscous one, as it will lead to unwanted complications at the cold start of the engine. Long enough to avoid long probation. If the sensor does not extingule and after cooling the engine to normal parameters, this may indicate a malfunctioning of the oil pump.
