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Your post is the perfect case for why you should always find out the full definition for a code before you start swapping parts................
P1117 is the code for a problem with the heater circuit on the O2 sensor, but does not necessarily mean that the sensor needs to be changed; it could be a simple wiring or connector issue (very common), or it could be the sensor itself in the worst case scenario. That said, if it is a wiring issue, the new sensor will do the same thing.
Do some online research for the specific code (P1117) for the specific year of your car; you should find a full set of electrical circuit tests (voltage and continuity) that can be done with a $10 multi-meter before you jump (possibly without cause) for a much more expensive part that may or may not fix the problem............
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“Anything really new is invented only in one’s youth. Later, one becomes more experienced, more famous – and more stupid.” - Albert Einstein
Last edited by JFP in PA; 03-24-2012 at 08:16 AM.
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