October 30: LEMON manuals on a temporary server, it is slow and having issues, download the manuals you need! Later in November we will switch back to the fast server.

Possible Causes

This DTC uses two-trip detection logic. DTC is set when idle speed continues to vary greatly from target speed. Possible causes are:

IAC valve is stuck or remains closed.
IAC valve circuit is open or shorted.
A/C switch circuit is open or shorted.
Air induction system malfunction.
Defective ECM.