Just purchased a 2008 Ody with 123,000 miles. The gas gauge reads empty even after I filled the tank. I checked the fuse, and it is not blown. I performed the gauge self test, (involving the lights, ignition key, reset button, etc.) and all the gauges swept over the full range including the gas gauge. I removed the rear seats, pulled the carpet up, removed the fuel pump access panel, and unplugged the fuel pump connector. The voltage between pins 1-2 is 12 volts when disconnected. The resistance between pins 1-2 on the fuel pump module measures 20 ohms, indicating the fuel sensor is at the full position. The fuel gauge does not move off empty whether the connector is plugged in or not. I also checked the OBD with my scanner. Initially I had a U0155 error code, "No communication between computer and instrument panel, which I reset. The code has not returned, but the gauge still reads empty. Any suggestions?