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2007 jeep liberty, all four O2 sensors have codes, 2 replaced, 2 cleaned real good, wont pass inspection
I have a 2007 jeep lliberty that I'm llimping along. It won't pass ininspection because of codes from all four O2 sensors...I have replaced 2 and the other 2 I took out and soaked overnight in fuel after scrubbing them very good...Didn't want to buy new ones if that's not the problem. All four say high voltage on the scanner tool .
