Hi,
Circuit: I2C_SCL connected to RX pin of sensor, I2C_SDA connected to TX. both through 4.7k resistor.
I think your 4k7 resistor should not be in the SCL and SDA lines but each resisitor is FROM the SDA and SCL lines to 5V.
Can you please post a copy of your circuit, in CAD or a picture of a hand drawn circuit in jpg, png?
Tom... 