There are 2 likely possibilities. A very large intake air leak that the wideband reads as “lean as all heck” so the car is dumping tons of fuel in a futile attempt to compensate… OR the signal from the O2 sensor is not making it back to the ECU, hence the 0.000 V reading.
Likely problems include; Bad upstream O2 sensor, bad wiring to the ECU or a bad ECU. I’d guess bad O2 sensor. Normally that should set a code P0130 but that is why we actually look at the data to see what it reads.