What does code P1558 mean?

Q: What does code P1558 mean?

Throttle Actuator Electrical Malfunction. P1558 on a Volkswagen means the engine computer has detected an electrical fault in the throttle actuator circuit, which is the motor that opens and closes the throttle plate. The computer monitors the actuator's electrical current and position feedback, and it sets this code when the expected electrical response does not match what it commands.

DTC codes / Volkswagen codes / P1558

P1558 · VolkswagenThrottle Actuator Electrical Malfunction

P1558 on a Volkswagen means the engine computer has detected an electrical fault in the throttle actuator circuit, which is the motor that opens and closes the throttle plate. The computer monitors the actuator's electrical current and position feedback, and it sets this code when the expected electrical response does not match what it commands.

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.