What does code P1511 mean?

Q: What does code P1511 mean?

Boost Pressure Low. P1511 on Toyota vehicles indicates that the engine control module (ECM) has detected a boost pressure that is lower than the expected value for the current operating conditions. The ECM compares the actual intake manifold pressure, measured by the manifold absolute pressure (MAP) sensor or boost sensor, against a target pressure calculated from engine speed, throttle position, and airflow; when the actual pressure falls short for a calibrated time, the code is stored.

DTC codes / Toyota codes / P1511

P1511 · ToyotaBoost Pressure Low

P1511 on Toyota vehicles indicates that the engine control module (ECM) has detected a boost pressure that is lower than the expected value for the current operating conditions. The ECM compares the actual intake manifold pressure, measured by the manifold absolute pressure (MAP) sensor or boost sensor, against a target pressure calculated from engine speed, throttle position, and airflow; when the actual pressure falls short for a calibrated time, the code is stored.

SystemPowertrain

Code typeToyota specific

SeverityMedium

Fix difficultyIntermediate

AreaVehicle speed, idle control and auxiliary inputs

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