hawksoob Posted January 20, 2004 Share Posted January 20, 2004 Got a P0133 upstream O2 sensor "slow response" code. Is this a replace situation? Does it mean it's faltering but not bad, replace at your leisure? Or does it mean "replace now"? Thanks Quote Link to comment Share on other sites More sharing options...
99obw Posted January 20, 2004 Share Posted January 20, 2004 O2 sensors are usually in need of replacement long before a code is set, so yes, replace it. Quote Link to comment Share on other sites More sharing options...
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