The data bus test using low memory failed. The error indicates a hardware problem.
Details
The main circuit board of your Mac Portable contains a “data bus” that is used to transfer information between the CPU and main memory (RAM).
What to do
You may have to replace the entire main circuit board of your computer to fix this problem. But first, remove each of the RAM chips (one at a time) and restart. See if the problem persists. If the problem goes away after you removed a RAM chip, then the chip is bad rathe than the entire main circuit board.