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Message: <blockquote data-quote="2slo95fiveoh" data-source="post: 1216140" data-attributes="member: 8966">small update!I have checked and double checked all the wiring looms and can't find any damage or broken wires. I have narrowed my issue down to either a bad PCM ground, or possibly a bad connection with the grey/red wire that the o2 sensors, IAT sensor, etc have in common. One of the codes present was 113 "IAT max voltage/ -40 degrees detected ", but tonight I took a voltmeter to the IAT sensor, and it had 4.46v (max is 5) going to it, so I don't suspect an issue from the power side. I also scanned the codes again and this time only two came back: the same 113 IAT max voltage, and the same 212 "spout circuit grounded" for the timing 'spout'.. According to various dtc codes and solutions listings, the only one I can find in common is a bad PCM ground, so I am hoping that is all it is.. If not, then I have a spare IAT sensor that I will swap out and see if that changes the 113 dtc.I will continue diagnosis tomorrow, and hopefully have something figured out. My tuner said he has availability this week, so that if this issue is resolved I can have my car tuned before friday (test & tune night at the local dragstrip).. Fingers crossed!</blockquote>