Quote:
Originally Posted by deanus
Well, I see our problem. There's a code list on Toyota nation from 3/29/2006 that say's 1155 is bank 2 sensor 1 but the slip from autozone says that 1155 is bank 1 sensor 2 as do a couple of other sites I searched. But now as I search more I found another one listed your way. Could Autozones diag. tool be wrong? That would simplify this although is there something that could have caused both heater circuits to burn out, short or break simultaneously at 40k miles. A relay I can't locate perhaps. Thanks for your help.
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Oddly enough, I've seen 1155 listed like this before. One way to know for sure is that you won't have a code for an air/fuel ratio sensor at the sensor 2 location, rather one for an oxygen sensor. This will be a "P0xxx" instead of "P1xxx".
Obviously you have verified that you have opens inside the sensor, so they'll both need replacing (at least by the time your emissions check is due). In my years with Toyota, I have never seen an O2 or AF code caused by anything other than sensor failures. Not to say it can't happen, it's just that factory wiring problems on yotes are
extremely rare. The heater in the sensor body is basically just a filament that heats the sensor up quickly for efficient operation. Add to the fact that it hangs out in the exhaust stream all day, and a failure at that point isn't uncommon. I would bet on the fact that your case is just coincidental. Try finding a deal on a factory sensor online, you can get one much cheaper than at the parts counter. Hope this helps.
