What does code P1579 mean?

Q: What does code P1579 mean?

Idle Speed Control Throttle Position Adaptation Not Started. P1579 on Volkswagen vehicles means the engine control module (ECM) has not yet performed the idle speed control throttle position adaptation, a self-learning routine that teaches the ECM the closed and open limits of the throttle valve. The ECM sets this code when the adaptation process has not been started or completed, often because a basic setting was interrupted, the battery was disconnected, or a fault prevents the throttle from reaching its mechanical stops.

DTC codes / Volkswagen codes / P1579

P1579 · VolkswagenIdle Speed Control Throttle Position Adaptation Not Started

P1579 on Volkswagen vehicles means the engine control module (ECM) has not yet performed the idle speed control throttle position adaptation, a self-learning routine that teaches the ECM the closed and open limits of the throttle valve. The ECM sets this code when the adaptation process has not been started or completed, often because a basic setting was interrupted, the battery was disconnected, or a fault prevents the throttle from reaching its mechanical stops.

SystemPowertrain

Code typeVolkswagen specific

SeverityMedium

Fix difficultyIntermediate

AreaVehicle speed, idle control and auxiliary inputs

Guidance is general and written for Volkswagen vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.