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Hello, what are the actual codes that are displayed for the oxygen sensors?
Ok and when you say you have no voltage at the sensors, is that by looking at the sensor data with a scan tool and dont see the upstream oxygen sensors switching? Or you are testing for power at the sensors? You said there was no signs of damage to the sensor harness? No issue with the wiring harness pinched in between the engine and transmission?
I would think so, one common issue is getting the wiring harness trapped in between the transmission and rear of the engine when bolting it back up, this can cause blown fuses, sensor issues you name it. See if it shows the sensor working at all or reading no voltage.
Hello do you need more help with this concern?