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HOMESERVICE MANUALSFORD2005TAURUS SEL, 4D SEDANREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCESYSTEMENGINE CONTROLS - POWERTRAIN DTC CHARTS & DESCRIPTION (EXCEPT DIESEL & HYBRID)DIAGNOSTIC TROUBLE CODE (DTC) CHARTS AND DESCRIPTIONSDTC P0507: IDLE AIR CONTROL (IAC) SYSTEM RPM HIGHER THAN EXPECTED
2005 Ford Taurus SEL, 4D Sedan

DTC P0507: Idle Air Control (IAC) System RPM Higher Than Expected

2005 Ford Taurus SEL, 4D SedanSECTION DTC P0507: Idle Air Control (IAC) System RPM Higher Than Expected
P0507 - IDLE AIR CONTROL (IAC) SYSTEM RPM HIGHER THAN EXPECTED

For Vehicles With Electronic Throttle Control (ETC) 
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: 
  • Air intake leak after throttle body
  • Vacuum leaks
  • Failed EVAP system
  • EGR valve leaks vacuum
  • Damaged electronic throttle body (ETB)
  • Damaged PCM
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 or vacuum leaks and damage. If no concerns are present, clear the DTC and retest.
For All Others 
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 shorted to ground
  • Damaged or incorrect IAC valve
  • IAC valve stuck open
  • Air intake leak after throttle body
  • Vacuum leaks
  • Failed EVAP system
  • EGR valve leaks vacuum
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 
Vehicles With Electronic Throttle Control (ETC) Refer to the Description, Possible Causes and Diagnostic Aids for the DTC.
All others GO to KE: Idle Air Control (IAC) Valve STEP KE14.
RENDER: 1.0x

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