P0505: Idle Air Control (IAC) System Malfunction (Vehicles With Electronic Throttle Control (Etc))
WARNING: This page does not describe the selected car, but rather 30 other vehicles, including the 2004 Mercury Sable, 2004 Mercury Mountaineer, 2004 Mercury Monterey, 2004 Mercury Marauder, and 2004 Mercury Grand Marquis. However, it is still accessible from the selected car via links, so may be relevant.
P0505 - IDLE AIR CONTROL (IAC) SYSTEM MALFUNCTION (VEHICLES WITH ELECTRONIC THROTTLE CONTROL (ETC))
| Description: | The powertrain control module (PCM) attempts to control engine speed during the key on, engine running (KOER) self-test. The test fails when the desired RPM could not be reached or controlled during the self-test. | ||
| Possible Causes: |
|
||
| Diagnostic Aids: | This DTC is informational only and it may be accompanied by other DTCs. Diagnose other DTCs first. If other DTCs are not present inspect the intake air system for air restrictions, vacuum leaks, and damage. If no concerns are present, clear the DTC and retest. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| Vehicles with electronic throttle control (ETC) | Refer to the Description, Possible Causes and Diagnostic Aids for the DTC in question. | Refer to the Description, Possible Causes and Diagnostic Aids for the DTC in question. | Refer to the Description, Possible Causes and Diagnostic Aids for the DTC in question. |