1. A method comprising: in a data storage device including a controller and a memory, performing, by the controller: initiating a first decode operation of data at an error correction code (ECC) hard bit decoder; and in response to the first decode operation indicating that the data is uncorrectable by the first decode operation: identifying one or more bits of the data that correspond to a disturb condition test pattern; changing a value of the one or more identified bits of the data to generate modified data; and initiating a second decode operation at the ECC hard bit decoder using the modified data.