Our 2010 outback with 100k miles had the 3 brake related lights come.
The dealer replaced the sensor in the master cylinder for #1200 saying it was faulty. 3 weeks later lights come on again and the replace the sensor again saying guess the first one was faulty. Light come on with in a month and they say the alternator is bad this time and replace that for $400+ and my wife is pissed (did they need to replace the sensors?). Lights just came on again and she's livid, I'm to busy to get it to the dealer 60 miles away (Modesto Subaru where we bought the car new). I told her to take it there and get a full refund under the lemon law. I see you say the O2 sensor could trigger these light to come on, does the code clearly say O2 sensor is out? Please help!