Recently had problem with main engine harness wire breakage, breaking wire to MAF. Was able to repair, but now checking the codes from the check engine light I get 0505...(no self diagnostic failures) followed by 0506 ????? then it stays blinking 0506. Tried the excellent decoder on vbmaxima.8m.com and 0506 comes back undefined. Any ideas? Would dealer test equipment be able to better define the code?

Thanx.