Hello. I have a 2000 4runner.V6, auto, 4wd. CIL code p0171. Easy fix I thought. MAF wires were dirty. Cleaned and reinstalled. Cleared code. Ran great...for a while. Now have codes p0125,p1130,p1135. I know what they mean. A/F sensor, and OX sensor. But that dosn't make any sense. These codes did not exist until I cleaned, and reinstalled MAF. No p0171 anymore. What do you think? Hi milage, 165k. Ready for FA and OX sensors? Well yea, sure. But why all of a sudden? Thanks.