I pulled CEL code 67 cat or 2nd 02 sensor?
67 Catalyst system Efficiency Below Threshold malfunctioning or defective catalyst system
got this using paperclip method. is it jsut the cat or can it be the 2nd o2 sensor. a mechanic told me it could be either but safer to do the 2nd o2 sensor cause that is probably the problem. I ahve an aftermarket high flow cat that was installed over 06 summer and hasnt caused any problems til now...is my o2 sensor burned out? he said that the higher flow caused the 02 sensor to malfunction quicker. i willr eset ecu tomorow to see if it clears anything.
got this using paperclip method. is it jsut the cat or can it be the 2nd o2 sensor. a mechanic told me it could be either but safer to do the 2nd o2 sensor cause that is probably the problem. I ahve an aftermarket high flow cat that was installed over 06 summer and hasnt caused any problems til now...is my o2 sensor burned out? he said that the higher flow caused the 02 sensor to malfunction quicker. i willr eset ecu tomorow to see if it clears anything.
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Si_chRis
Honda Civic / Del Sol (1992 - 2000)
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Dec 25, 2008 08:52 AM




