Think I have an 02 issue
05-03-2014, 03:22 PM
#1
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Join Date: Jan 2012
Posts: 41
Think I have an 02 issue
Keep getting random SES light. Plug in my laptop and run a data master scan. Scan reveals failed right 02, DTC 63. Change 02 with new AC Delco 02 and clear DTC code. Start car and start scan again. Car reaches operating temp and new 02 cycles between 98-107, left 02 sits on 453. Shoudn't the left and right values be close to the same number?
05-03-2014, 04:13 PM
#2
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Join Date: Dec 1969
Location: Little Rock, AR
Posts: 27,709
Re: Think I have an 02 issue
At hot idle, the numbers should fluctuate all over the place (a lot more than 98-107). Plus, the left O2 seems to be stuck or not working at all. Code 63 is an open circuit. Check your wiring.
05-03-2014, 05:50 PM
#3
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Re: Think I have an 02 issue
Thank you. Everything looks okay with the wires, but I'll try replacing the 02 extension and go from there. Darn thing isn't that old.
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Alex Barnes
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