We bought new. After 7 months of ownership, car completely died at stop light. Was able to restart. Happens intermittently. Twice have returned to parked car and completely dead. Now this weekend this happened, started back up after 24 hours just to die again. After 3 minutes it started again. We have taken it to the dealership and they replaced the battery and the control unit after the first 3 times but obviously this didn’t fix it.

Sometimes stalling when stopped or sputtering when accelerating from stopped. Comes and goes but get's more frequent in the drive. Got a code P0131 02 Sensor 1. I replaced it, same issue. I unplug the 02 sensor and it will run. I thought it was the harness on the vehicle and had dealership take a look. They did an overlay on it "as a start". They said it was done, I kept asking about the 02 sensor before pick up. "It's good, we drove it, etc.". After pick up about 12 miles later I stall/sputter. They say it's the ECM and Cat. Converter.

Looking for second opinion.
I've replaced spark plugs, wires, coil. MAF, MAP sensors. Purge valve.