Discuss KOER Code 12? IAC? on AllFordMustangs.com, the place for Mustang enthusiasts.
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trying to pass smog =( hate it so much. I did a KOEO got pass code 11, CONTINUOUS MEMORY got 31, KOER got code 12.
i know that the 31 has to do with the EGR sensor (correct?)
I googled code 12 even though the book said RPMS at idle are out of range/high. What does that have to do with? is it the IAC? Stupid google said it had to do with the airbags. i dont think so. Any help would be awesome. thank you
I have an update. i took off and cleaned the IAC. Got as much crap out as i could. Then i cleaned the throttle body. i also replaced the EGR sensor which fixed code 31. put everything together. Waited for it to warm up tested it and still got code 12. Does that mean the IAC is bad? Thats the only code its giving. Is there anything else that can give a code 12 besides the IAC?