Just as the title states, 2003 V8 4runner, replaced a/f sensor because of a p0031 for and how get a p0032 that won't go away (comes back instantly if it is cleared).
Toyota sensor (so yes, denso). I have not cleaned the MAF, I had found that suggestion somewhere but have not done it yet, I did pull it one day and it actually appeared very clean, that is next on the list though.
I checked and do have 12 volts at the plug. Not sure if I have a good ground or not. I wish I knew which wire going into the ECM was the wire coming from the heater so I could check for a broken wire.