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Same problem as y'all

Yesterday was the first real big rainstorm for my Prius. After a 25 minute drive, the master warning light started flashing. I noticed the car became sluggish (I now know the gas engine must've shut off). I was able to drive it .5 mile to my home. After 20 minutes off, I drove it again on city streets for another 20 minutes. This morning I drove to the dealership on city streets. They said they found code P3191 and performed ECM Calibration per EG027-04 TSB. Car seems okay. I have driven it 20 miles since getting my car back.
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