So, if Denso's are so good why have mine failed twice? I have 44k on my truck! I am on my third set of 02's made by Denso next set I guarantee you won't be Denso's. Why does Toyota have a zillion problems through out the lineup with Denso sensors? I'm not advocating Bosch - either.
But before anyone jumps on Bosch I replaced my two Celicas with Bosch 02's , not one issue. Two different yr cars too. 94-92. I'd say a good 150 k more mileage on both cars after the sensors swaps.
I'm not sure we can cast a wide net on any sensors for this truck seeing they all seem to fail in some trucks early.