Code 63 - Secondary oxygen sensor
09-19-2005, 11:27 AM
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Code 63 - Secondary oxygen sensor
My 98 Civic DX is throwing a code 63 - "Secondary oxygen sensor". My first assumption is that it is the sensor after the CAT. Before I buy and replaced it can someone confirm which is the "Secondary" sensor?
It's been like that for about a year. My gas mileage is down from 41 to 34 mpg. With gas prices so high I want to fix it now.
Thanks in advance for your help.
It's been like that for about a year. My gas mileage is down from 41 to 34 mpg. With gas prices so high I want to fix it now.
Thanks in advance for your help.
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