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| Forum name | Performance/Engine |
| Topic subject | CEL Engine Code P0133 |
| Topic URL | https://forums.2gnt.com/dcboard.php?az=show_topic&forum=i5&topic_id=118667 |
118667, CEL Engine Code P0133
Posted by RfOeCnKdOeNr, Jul-08-07 06:28 PM
Hey everyone. I have searched and haven't really found an answer. I have a custom turbo kit with a custom 2.5" downpipe. I keep getting the P0133 CEL code. I know it means upstream O2. But what should i do to fix it? Is it the sensor? When i clear the code it wont turn back on for a week or weeks. Where should i start to diagnose this?
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118668, RE: CEL Engine Code P0133
Posted by 99blackclipse, Jul-08-07 06:40 PM
Do you have an upper o2 sensor? If not then thats probably it and if so then get it.
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118669, RE: CEL Engine Code P0133
Posted by RfOeCnKdOeNr, Jul-09-07 04:57 AM
Yes, I have both the original O2 sensors in their original locations.
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118670, RE: CEL Engine Code P0133
Posted by DR1665, Jul-09-07 05:48 AM
Sounds like your FO2S is shot or on it's way out. Might as well hit up oxygensensor.com or whatever it's called.
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118671, RE: CEL Engine Code P0133
Posted by RfOeCnKdOeNr, Jul-09-07 06:03 AM
Thats what I was thinking as well...I can't remember that damn URL.
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