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DTC codes / Ford codes / P1507

P1507 · FordIdle Air Control Under Speed Error

P1507 on Ford vehicles means the powertrain control module (PCM) commanded a specific idle speed through the idle air control (IAC) valve but the actual engine speed stayed below the expected target for a calibrated amount of time. The computer is not reporting a failed valve directly; it is reporting that engine rpm did not respond to the IAC command as expected during idle control.

SystemPowertrain
Code typeFord specific
SeverityMedium
Fix difficultyIntermediate
AreaVehicle speed, idle control and auxiliary inputs
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