Error code after running hardware test

It's a memory error. Check your RAM to be sure they are seated properly in the slots, one of them may have come loose. If that's not it, remove the modules one at a time and test to find the culprit and replace it with new RAM.

Macs are fussy about RAM. Both Crucial and OWC are reliable vendors with high quality RAM.

The Apple Hardware Test, or Apple Diagnostics (depending on the age of your Mac) is very good at identifying problems. If it reports problem, then you can be pretty sure there is one. Sometimes it will report no problems when there are problems.

If yours is a model without user replaceable RAM, you'll need to bring it for further testing and possible replacement.

Your welcome, good luck with it.