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Home >> Ford >> 2006 >> Focus ZX5 SE, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 1485 (Engine Controls - Powertrain DTC Charts And Descriptions (Hybrid)) >> Diagnostic Trouble Code (DTC) Charts and Descriptions >> DTC P0506: Idle Air Control System Rpm Lower Than Expected

DTC P0506: Idle Air Control System Rpm Lower Than Expected

WARNING: This page is about a different car, the 2011 Mercury Milan, 2011 Lincoln MKZ, 2011 Ford Fusion, 2010 Mercury Milan, and 2010 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.
P0506 - IDLE AIR CONTROL SYSTEM RPM LOWER THAN EXPECTED

Description:  This DTC sets when the powertrain control module (PCM) detects actual engine speed that is lower than the desired RPM.
Possible Causes: 
  • Intake air restriction
  • Exhaust restriction
  • Engine mechanical concern
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 entire intake air system for restrictions. Repair as necessary. If no restrictions are found, clear the DTCs.
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
All Refer to the Description, Possible Causes and Diagnostic Aids for the DTC in table