Go to ODBII scanning. Read codes. No codes will show unless the SES light is on. Clear the codes. Even if none are present. All emission data will clear. Yes, over time, fuel will be adjusted. Starting fresh will give new MAF data. Once all emissions are set/passed, you’ll know if the new sensor is successful. Or it will show a problem still exists.

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'06 X5 3.0i - bought @143,123 miles (12/26/20)