O2 sensor codes.....

[Spike89]

I left without getting print out but I have both the upstream and downstream sensors throwing codes. 2007 Pontiac Grand Prix. Any ideas of what would through both?

 

[Spike89]

The catalytic converter seems to be fine. Don't know if that matters.

 

[lewis1952]

Try this link see if it helps any.
http://www.engine-light-help.com/oxygen-sensor-codes.html

 

[Spike89]

Thanks that helps

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