P1527 GMC – Throttle Position Sensor Learned Closed Throttle Degrees Out Of-Range

P1527 GMC Possible Symptoms

Engine Light ON (or Service Engine Soon Warning Light)

P1527 GMC Possible Causes

Faulty Throttle Position Sensor,Throttle Position Sensor harness is open or shorted,Throttle Position Sensor circuit poor electrical connection

P1527 GMC Description

With the engine runtime over 5 seconds, system voltage from 10-16v, Transmission Range Switch does not indicate an illegal position, TFP Manual Valve Position switch does not indicate an illegal position, the Powertrain Control Module (PCM) detects that the TR and TFP switches indicated different gears for 7.8 seconds.