What does code P1549 mean?

Q: What does code P1549 mean?

Boost Pressure Control Valve Open Short To Ground. P1549 on Volkswagen vehicles means the engine control module has detected a short to ground on the control circuit for the boost pressure control valve, which is the solenoid that regulates turbocharger boost. The computer commands the valve to open, but the circuit voltage stays low, indicating the wire is touching ground or the valve's internal coil has failed.

DTC codes / Volkswagen codes / P1549

P1549 · VolkswagenBoost Pressure Control Valve Open Short To Ground

P1549 on Volkswagen vehicles means the engine control module has detected a short to ground on the control circuit for the boost pressure control valve, which is the solenoid that regulates turbocharger boost. The computer commands the valve to open, but the circuit voltage stays low, indicating the wire is touching ground or the valve's internal coil has failed.

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.