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O2 Sensor NO 5 volts reference

Discussion in '1st Gen Tundras (2000-2006)' started by Cope, Aug 3, 2021.

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Aug 3, 2021 at 11:34 AM

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Cope [OP] New Member

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Hello new to this message board. O2 sensor Bank 2 sensor 1 has NO 5 volt reference. The reference voltage is present at the bank 1 sensor 1. Not sure if there is a fuse or if the Control Module is bad. Any help would be good.

Cope, Aug 3, 2021

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Aug 4, 2021 at 7:10 AM

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mbreed2 Is not right

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2001 Tundra 4x4

Wiring diagram has been posted on here before. You can run a search and find it.
I have never heard of this issue personally.
Usually the O2 heater circuit will have a fuse, not the reference voltage.

mbreed2, Aug 4, 2021

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