LEMON Manuals: Even more car manuals for everyone
Home >> Ford >> 2000 >> Contour SE, 2.5 L, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 2289 (Engine Controls - Powertrain DTC Charts & Descriptions (Except Diesel & Hybrid)) >> DTC Diagnosis >> 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 33 other vehicles, including the 2010 Mercury Mountaineer, 2010 Mercury Milan, 2010 Mercury Mariner, 2010 Mercury Grand Marquis, and 2010 Lincoln Town Car. However, it is still accessible from the selected car via links, so may be relevant.
DTC 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 .