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P1504 Diagnostic Trouble Code Discussion for September 2008

Idle Air Control Solenoid Circuit Malfunction

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Trouble Ticket Help Requests for DTC P1504
Help Request Posted
2002 Lincoln LS 3.0L Surge, MIL Lamp on VIN: 1LNHM86S92
P1504: IAC Shorted. ... start. Monitoring Pin 44 I see a solenoid pattern? The system B+ voltage is pulled down for 5 mil sec then a 15 volt spike? This only occurs once but pending code is set. When fuse 7 in the Central Junction Box is removed KAP at Pin 44 still has 12v. After...
September 04, 2008