DTC P0505 - Idle Control System

WARNING: This page does not describe the selected car, but rather 24 other vehicles, including the 2019 Lincoln Navigator, 2019 Lincoln Nautilus, 2019 Lincoln MKZ, 2019 Lincoln MKT, and 2019 Lincoln MKC. However, it is still accessible from the selected car via links, so may be relevant.

DTC DESCRIPTION P0505 - IDLE CONTROL SYSTEM

Description: This DTC sets when the desired RPM could not be reached or controlled during the key ON, engine running (KOER), self-test.
Possible Causes: Failure mode effects management (FMEM) condition is present Intake air restriction Exhaust restriction Sludged throttle body Vacuum leaks Damaged electronic throttle body (ETB)
Diagnostic Aids: This DTC may be accompanied by other DTCs. Diagnose other DTCs first. If no other DTCs are present, inspect the intake air system for air restrictions, vacuum leaks, and damage. If no concerns are present, clear the DTC and carry out the KOER, self-test.
Application	Key On Engine Off	Key On Engine Running	Continuous Memory
All	GO to PINPOINT TEST HU .