High Idle Speed w/DTC 6 on Diagnostic Module

[emerydc8]

While pulling into the driveway after taking the car for a test drive yesterday, my idle speed seemed to hang up at about 1,200 RPM. It stayed there regardless of whether it was in drive, neutral or park. I shut the engine down and pulled the codes.

I am getting a DCT 6 on the Diagnostic Module (socket 19), indicating the Idle Speed Control is inoperative. I restarted it several times since then and the idle is just fine.

Is there anything other than an ETA going bad that could cause this? Thanks.

 

[gsxr]

Jon, what codes were you getting from pin 7 (E-GAS), and the other modules...?

 

[emerydc8]

I was expecting to see a DTC 3 on pin 7, but this time there was nothing. The only other codes were the usual -- DTC 4 on pin 19 (air pump inop) and dtc 21 on socket 6 (charge pump).