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Home >> Ford >> 2006 >> Focus ZX5 SE, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 668 (Engine Controls - Powertrain DTC Charts And Descriptions (Except Diesel & Hybrid)) >> DTC Diagnosis >> P1506 - Idle Air Control (IAC) OVERSPEED Error

P1506 - Idle Air Control (IAC) OVERSPEED Error

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P1506 - IDLE AIR CONTROL (IAC) OVERSPEED ERROR

Description:  This DTC is set when the powertrain control module (PCM) detects an engine idle speed that is greater than the desired RPM.
Possible Causes: 
  • IAC circuit short to GND
  • Damaged IAC valve
  • IAC valve stuck open
  • Intake air leak after throttle body
  • Vacuum leaks
  • Failed EVAP system
Diagnostic Aids:  Disconnect the IAC valve and look for little or no change in engine RPM as an indication of a stuck or damaged valve.
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
All refer to PINPOINT TEST KE .
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