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i have a big problem help me.

I have a chevy Tahoe 1997 i have replace the oxigen sensor and the catalizador of the chevy i have remove it but the check engine still ligth up and the computer say it is the same oxigen sensor and it is new and it say oxigen sensor bank 1 low volt

2 thoughts on “i have a big problem help me.”

  1. First off, your Tahoe has four O2 sensors on each bank. So you will need to look closely at the code to determine if it is Bank 1 Sensor 1 or Bank 1 Sensor 2.

    Bank 1 is the drivers side of this vehicle.
    Sensor 1 is before(upstream) of the catalytic converter coming from the engine.
    Sensor 2 is after(downstream) of the catalytic converter coming from the engine

  2. Try to reset the computer by taking the positive terminal off the battery for a minute or two and then replacing it back on the battery

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