P1127 TOYOTA, LEXUS - ETCS ACTUATOR POWER SOURCE CIRCUIT MALFUNCTION
POST UPDATED IN June, 2023
P1127 TOYOTA, LEXUS - ETCS ACTUATOR POWER SOURCE CIRCUIT MALFUNCTION
The ETCS (Electronic Throttle Control System) is an automotive system designed to electronically connect the accelerator pedal to the throttle, which is equipped on vehicles to replace the mechanical linkage. Generally, the ETCS is composed of an accelerator pedal module, which has two or more position sensors. There is also a throttle valve that opens and closes through an electronic motor. The PCM determines through software the required throttle position and the calculations sent by the position sensors.
The P1127 OBDII fault code is a manufacturer-specific code, which indicates that the Electronic Throttle Control System actuator has experienced problems in its power circuit.
Reasons for setting the P1127 OBD2 diagnostic code:
Steps to troubleshoot the P1127 OBDII DTC: