What does code P1544 mean?

Q: What does code P1544 mean?

Throttle Actuation Potentiometer Signal Too High. P1544 on Volkswagen vehicles means the engine control module (ECM) has detected a signal voltage from the throttle actuation potentiometer that is higher than the expected range for the current throttle position. The potentiometer is a second sensor inside the electronic throttle body that reports the actual blade angle, and the ECM compares it against the accelerator pedal request to command the throttle motor.

DTC codes / Volkswagen codes / P1544

P1544 · VolkswagenThrottle Actuation Potentiometer Signal Too High

P1544 on Volkswagen vehicles means the engine control module (ECM) has detected a signal voltage from the throttle actuation potentiometer that is higher than the expected range for the current throttle position. The potentiometer is a second sensor inside the electronic throttle body that reports the actual blade angle, and the ECM compares it against the accelerator pedal request to command the throttle motor.

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.