Question about 2002 Nissan Altima
507 is a catalytic converter code that the computer throws when the oxygen level is below 95% of max. Altima's don't generally have that issue so i would lean more towards an 02 sensor. usually its the upper 02 sensor. start there.
Posted on Dec 01, 2012
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Posted on Jan 02, 2017
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Oct 07, 2013 | 2000 Chevrolet Impala
Apr 12, 2013 | 1997 Chevrolet K1500
A P0507 DTC trouble code is set when the actual idle speed is higher that than the desired idle speed set in the computer. I would be checking for a vaccum leak because that can easily cause the engine to idle higher than usual. Aside from that you could have a malfunction in the electronic throttle control or the Engine computer but thos are less likely. As far a vacuum leak goes sometimes a hissing noise can be heard, Inspect all the rubber hoses for cracks or splitting and also check the intake hose after the air cleaner for any leaks. Hope this helps and good luck.
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