I recently changed my engine oil myself at about 9k miles. I only put about 8 quarts of oil in there and the oil level display showed it to be at max. After driving a couple weeks, I checked again and it says it is too high. I checked again in a couple days and it said it is at max again. I drained some oil today and again it says it is too high. Anyone ever experienced this? Anyone know if the sensor could be a problem or if in needs to be reset? Without a dip stick I have no way of knowing where the oil level really is.

Thanks in advance.