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Thanks for the responce, that's what I'm reading. My codes were lean on both banks and lack of switching rich on bank one. I then removed my 02s at the connectors and the truck ran better so I then switch the bank 1 02 to bank 2 and the bank 2 02 to bank 1 and the only code I've gotten so far is lack of switching lean on bank 2 now. Does that mean that the lack of switching 02 sensor is bad?
It sounds like the O2 sensors are not responding properly; one worse than the other. How many miles do you have on the engine? Does your owner's manual say anything about how often the sensors should be changed?
The other possibility is that the MAF sensor is dirty, throwing off the A/F mixture far enough that the O2 sensors become ineffective. You can try cleaning the MAF sensor carefully with the proper cleaners to see if it helps, before you start changing parts.
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