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P1506 Diagnostic Trouble Code Discussion for December 2006

Idle Air Control System RPM Higher Than Expected

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Trouble Ticket Help Requests for DTC P1506
Help Request Posted
2002 Ford Taurus LX 3.0L Poor Idle Quality VIN: 1AFP58S12G
P1506: Idle Air Control Overspeed Error. ... in with the Check Eng light on. Chaecking for codes came up with the P1506 in the memory and no codes in the KOEO or KOER. Idle speed is at 1150 RPM at warm idle. The IAC has the correct resistance and moves w/ voltage is applied. Checked for vacuum leaks ...
December 23, 2006
2001 Ford E-150 Econoline 4.6L Poor Idle Quality, MIL Lamp on VIN: 1FDRE14W21
P1506: idle overspeed. ... visits to my shop. Checked for vacuum leaks (intake, PCV assembly), none noted. Checked for irregular IAC operation, none noted. P1506 to my understanding is a PCM recognized fault "expecting a data range, getting data out of range". Any good sugge...
December 28, 2006