What does code P1524 mean?

Q: What does code P1524 mean?

TP Sensor Learned CI Throttle Angle Out Of Range. P1524 on GM vehicles means the engine control module (ECM) has detected that the learned closed-throttle angle from the throttle position (TP) sensor is outside the acceptable range during its idle-learn routine. The computer expects a specific minimum voltage or angle when the throttle plate is fully closed, and the sensor's learned value has drifted beyond that window.

DTC codes / GM codes / P1524

P1524 · GMTP Sensor Learned CI Throttle Angle Out Of Range

P1524 on GM vehicles means the engine control module (ECM) has detected that the learned closed-throttle angle from the throttle position (TP) sensor is outside the acceptable range during its idle-learn routine. The computer expects a specific minimum voltage or angle when the throttle plate is fully closed, and the sensor's learned value has drifted beyond that window.

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.