Block health detector for block retirement in a memory sub-system

A method comprising:

• identifying a read error associated with a first block of a plurality of blocks of a memory device;
• initiating a diagnostic memory access operation on the first block;
• determining whether the diagnostic memory access operation was successfully performed on the first block;
• responsive to determining the diagnostic memory access operation was successfully performed on the first block, initiating a diagnostic read operation on the first block;
• determining whether the diagnostic read operation was successfully performed on the first block;
• and
• responsive to determining the diagnostic read operation was successfully performed on the first block, identifying the first block as a healthy block.

A non-transitory computer-readable storage medium comprising instructions that, when executed by a processing device, cause the processing device to perform operations comprising:

• identifying a read error associated with a first block of a plurality of blocks of a memory device;
• initiating a diagnostic memory access operation on the first block;
• determining whether the diagnostic memory access operation was successfully performed on the first block;
• responsive to determining the diagnostic memory access operation was successfully performed on the first block, initiating a diagnostic read operation on the first block;
• determining whether the diagnostic read operation was successfully performed on the first block;
• and
• responsive to determining the diagnostic read operation was successfully performed on the first block, identifying the first block as a healthy block.