Low Voltage in all 4 o2s?
06-05-2009, 04:01 PM
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Low Voltage in all 4 o2s? I checked my SES code at Advance and that's what popped up. I replaced the rear o2s last year and the codes still popped up for all 4 being bad. The battery and alternator were also replaced last year. What else should I check before I go buying $73 sensors?
