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Quick Links: What are these called, and does anyone know the part# for the clips for them? 2000-2002 Radio wiring harness source? Which OBD II Code Reader Do you Use? Getting to Level on Bilstein 6112's for Access Cabs Found a Cool-ish Phone Mount Mirror vibration / shakes

All 4 O2 sensors bad?

Discussion in '1st Gen Tundras (2000-2006)' started by dwarmbrodt, Nov 28, 2019.

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Nov 28, 2019 at 1:03 PM

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dwarmbrodt [OP] New Member

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Hello all,
I gave check engine light on for all 4 sensors. I assume they cant be bad at the same time so I have a wiring problem somewhere. any experience with this as to where I look first?

dwarmbrodt, Nov 28, 2019

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Volt92 likes this.

Nov 28, 2019 at 1:13 PM

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14burrito IG @14burrito

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So you have both fuel trim faults and cat below efficiency fault, or what exactly are your DTCs?

14burrito, Nov 28, 2019

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Aerindel and Volt92 like this.

Nov 29, 2019 at 3:20 PM

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dwarmbrodt [OP] New Member

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PO031, PO037, PO051 AND PO134

dwarmbrodt, Nov 29, 2019

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