My wife's 2000 v6 is having the erratic idle problem. Coolant isn't low, I can't find a vacuum leak, I've cleaned the IACV, but the code suggests an electrical problem, I believe. I found the following in a civic forum, and wondered if anyone had a similar guide for my car:

I Got 2 ECU Codes P1298 and P1519 - Honda Civic Forum

Thanks in advance!

Edit: I found a pin diagram for ecm/pcm with some more looking and was able to use the trouble shooting guide from the civic forum but used the ecm/pcm connector B23. I will probably need a new IACV because everything else seems fine.

 

Would an aftermarket part like this one be acceptable, or is going oe from parts geek really worth almost twice as much?

 

Fingers are crossed--after thinking the 1519 circuit failure code might have popped after I unplugged the IACV while troubleshooting before pulling the codes, I decided to reset the ECM (pulled fuse 13 for 30 seconds). After starting the car back up, she idled up to about 2k like she's been doing, then came back down to less than 1k! everything seemed smooth from there. I took her out to put a few miles on her and everything seemed great!

Maybe this was from the adjustment I made to base idle--I read that I should reset after making that adjustment, but forgot to do that. I'm just hoping the problem doesn't come back.