What does code P1519 mean?

Q: What does code P1519 mean?

Electronic Throttle Module Low Volts Communication Disable. P1519 on a GM vehicle means the engine control module (ECM) has detected a low voltage condition on the communication circuit for the electronic throttle module (ETM), and it has disabled throttle control as a result. The ECM is not receiving a valid signal from the throttle actuator control system, so it commands the throttle to a default position and stores this code.

DTC codes / GM codes / P1519

P1519 · GMElectronic Throttle Module Low Volts Communication Disable

P1519 on a GM vehicle means the engine control module (ECM) has detected a low voltage condition on the communication circuit for the electronic throttle module (ETM), and it has disabled throttle control as a result. The ECM is not receiving a valid signal from the throttle actuator control system, so it commands the throttle to a default position and stores this code.

SystemPowertrain

Code typeGM specific

SeverityMedium

Fix difficultyIntermediate

AreaVehicle speed, idle control and auxiliary inputs

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