38050 miles and....
#1
38050 miles and....
My service engine light just came on
Three dyas ago, I had the oil, transmission fluid and rear diff fluid changed out.
Is this a dummy light for a tune up or something broken possibly?
2000 Camaro SS Automatic
Three dyas ago, I had the oil, transmission fluid and rear diff fluid changed out.
Is this a dummy light for a tune up or something broken possibly?
2000 Camaro SS Automatic
#3
There are literally hundreds of things that can set off the SES light and you really have no way of knowing what it is. So DO NOT GUESS. Buy yourself an OBDII code reader (great tool to have anyway) or follow tnnntj's advice and have the code read somewhere. Once you know the code then post it up and we can try and trouble shoot it.
#5
Went to autozone and the gentleman said they do not do the diagnostics anymore. (being sued or something). Then I asked how much the OBDII would cost me, he said "whats that"?
Went to kragen and bought one because I left Autozone frustrated. Code PO420 Is what the code reader gave me. "Catalyst System Efficiency Below Thresheshold (Bank 1).
Went to kragen and bought one because I left Autozone frustrated. Code PO420 Is what the code reader gave me. "Catalyst System Efficiency Below Thresheshold (Bank 1).
#7
Originally Posted by Haru
Went to autozone and the gentleman said they do not do the diagnostics anymore. (being sued or something). Then I asked how much the OBDII would cost me, he said "whats that"?
Went to kragen and bought one because I left Autozone frustrated. Code PO420 Is what the code reader gave me. "Catalyst System Efficiency Below Thresheshold (Bank 1).
Went to kragen and bought one because I left Autozone frustrated. Code PO420 Is what the code reader gave me. "Catalyst System Efficiency Below Thresheshold (Bank 1).
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#10
Originally Posted by Haru
I would like to have no cats and do the longtubes. Here in California it would get me in trouble with the law. If there are any other ideas, please let me know
#12
Originally Posted by Haru
Is there an "easy" way to test the sensor after the cat?
Thanks for your help, I have been camping this sight for hours now I will give it a shot.
Thanks for your help, I have been camping this sight for hours now I will give it a shot.
#13
Originally Posted by DMNSPD
i think if you pulled the sensor out you'd be able to tell that it didn't look right. I'm no expert by any means, but i'd just crawl under there and take a look.
#15
Yes, likely a bad O2 sensor. Check to make sure there are no exhaust leaks around the convertor area and there is no damage to the sensors or wire pigtails (e.g. burnt due to contact with exhaust, etc). Check to make sure the connectors are plugged in. You'll have one O2 forward of the cat and one behind. If all of the above checks out, I'd pick up a replacement O2 sensor and try that.
If you have access to Autotap or similar diagnostic software you may be able to run an O2 sensor test - I've never done it myself though.
*Note that I'm assuming you have the stock exhaust manifolds/cats. If you're using headers or have otherwise modified/relocated your cats, then I'd start there.
If you have access to Autotap or similar diagnostic software you may be able to run an O2 sensor test - I've never done it myself though.
*Note that I'm assuming you have the stock exhaust manifolds/cats. If you're using headers or have otherwise modified/relocated your cats, then I'd start there.
#17
Originally Posted by dudas35
Or, just buy a pair of O2 sims to get rid of it and make sure it doesn't come back.
#18
Originally Posted by tuffluck
if i'm not mistaken, you'd still have to plug the simms into the o2 sensor itself, and if the o2 sensor itself is the problem, then plugging a simulator into it will not solve the problem.
#20
Update
Picked up the sensor today, will hopefully be installing tomorrow. After install, do I erase the code with the OBDII and hope the light doesn't return? Or Do I undo the battery cable for fifteen minutes like I have read and hope the light doesn't come on?
Only one they had was a Bosch.
Only one they had was a Bosch.