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P1504 Diagnostic Trouble Code Discussion for December 2007

Idle Air Control Solenoid Circuit Malfunction

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Trouble Ticket Help Requests for DTC P1504
Help Request Posted
1996 Mercury Mystique LS 2.5L No Start VIN: 1MELM66L5T
P1504: idel air control circit. car came in with the complaint of trans not shifting right and od light flashing and speedo not working. Test drove and pull codes,3shift and 4 shift solenoids and speed sensor. pulled trans and had trans shop rebuild and they said there was no problem with th...
December 18, 2007