I was driving back home from a friends house, and all of a sudden when I'm waiting at the stoplight, the CEL pops up and my idle acts really weird. It wouldn't go down past 1500rpm. It just bobbed up and down at 1500rpm. The sound was a bit weird as well.

This scared me, so I parked on the side of the street and turned the car off. I jumped the ecu and got CEL 14.

CEL 14 = IAC Valve (Idle Air Control) defective circuit or unplugged / defective sensor.

After I cooled down the motor for a minute or two, I turned the car back on.

It seemed fine. No problem whatsoever, and rides normally. I resetted the ECU and erased the CEL on the dash.

Can anyone explain what happened? What exactly is CEL 14, and what causes this? Should I worry? Let me know! Thanks.

 

Check the wires going to the ECU from the VAFC.

are they butt connected or soldered. I have this problem with my fields because the wires arent soldered, doesnt show the IAC code but the MAP code pops up here and there. I just have to pull the ecu out and straighten out the wires and the it goes away.

 

Mine's soldered, so it wouldn't be the wires...

Anyone else? My cars running perfectly fine right now, but I'm just curious why that happened.