Hey Steve,
sorry for the delay on this, I had a hard time with my mechanic and still unsure of the exact problem.
After doing the diagnostic again, the mechanic says the machine is showing ABS problem, but the ABS light doesn't come on in the dash, only the "Trac Off" light stays on.
Now what should I do for the error codes 13 and 51 for the ABS/Trac?