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It sounds like you probably just muddied up your o2 sensors, but to check the code yourself turn your key to the on position,off,on,off then on. Wait a few seconds and the cel will begin to blink. count the blinks. there will be a pause between numbers. The check should end with the 55 code. You can also take to any autozone and they will check it for free.
 

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How does one muddy up an o2 sensor seeing as how the part that sends the signal is completely in the exhaust?
 
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