O2 Sensor Problem

[coghij1]

Hey guys I have a tricky one for you. I am pulling 2 DTC from my 2002 XLT 4.6 (P0042 & P7A00) using a Hypertech controller.

P0042 - HO2S Heater Control Circuit (Bank 1 Sensor 3)
I thought there were only 2 sensors per bank on these explorers. I havent had a chance to poke around yet but I can't find anything about this 3rd sensor. Does anybody know where it's at?

P7A00 - I have no idea what this code means and google is of no help. Any idea?

 

[BobWiersema]

You have posted in the Explorer section. Do you have a Explorer?
If you do, remove the Hypertech Controller, that is not made for a Explorer only works with the Expedition.

Bob

 

[coghij1]

Yes I have an explorer and this is an explorer I'm talking about. The hypertech can be used to pull codes on any car. Problem is even though it pulls them, it doesn't pull them correctly. The real codes I had were P0455 and P0456. This was due to a leak in the evap system. It was the hose to the vapor canister control valve and I just fixed it today.