Q: hey jose ,my name is larry , i took my car to the mechinc they the check engine light was on ,its the upstream bank 2 sensor ,do i

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my upstream bank 2 sensor needs to be replaced ,that's what the computer says ,but what I want to know is, do we need to replace both ,even if just the upper shows on the computer

My car has 60000 miles.
My car has an automatic transmission.

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