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Home >> Ford >> 2000 >> Taurus LX, 3.0 2, AX4N >> Repair and Diagnosis >> External Pages >> Different car >> Section 1815 (Engine Controls - Powertrain DTC Charts & Descriptions - DTC P0600 Through DTC P164A - (Except Diesel & Hybrid)) >> DTC P1504: Idle Air Control (IAC) Circuit

DTC P1504: Idle Air Control (IAC) Circuit

WARNING: This page does not describe the selected car, but rather 32 other vehicles, including the 2011 Mercury Milan, 2011 Mercury Mariner, 2011 Mercury Grand Marquis, 2011 Lincoln Town Car, and 2011 Lincoln Navigator L. However, it is still accessible from the selected car via links, so may be relevant.
P1504 - IDLE AIR CONTROL (IAC) CIRCUIT

Description:  This DTC sets when the powertrain control module (PCM) detects an electrical load failure on the IAC output circuit.
Possible Causes: 
  • IAC circuit open
  • VPWR to IAC solenoid open
  • IAC circuit short to voltage
  • IAC circuit short to ground
  • Damaged IAC valve
Diagnostic Aids: 
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
All GO to PINPOINT TEST KE .