DTC: P1226

Search Bulletins/Recalls for P1226

Trouble diagnosis name: Closed throttle position learning performance problem

Component Description

Electric Throttle Control Actuator consists of throttle control motor, acceleration pedal position sensor, throttle position sensor, etc. The throttle position sensor responds to the throttle valve movement.

The throttle position sensor has the two sensors. These sensors are a kind of potentiometers which transform the throttle valve position into output voltage, and emit the voltage signal to the ECM. In addition, these sensors detect the opening and closing speed of the throttle valve and feed the voltage signals to the ECM. The ECM judges the current opening angle of the throttle valve from these signals and the ECM controls the throttle control motor to make the throttle valve opening angle properly in response to driving condition.

DTC detecting condition:

• Closed throttle position learning is not performed successfully, repeatedly.

Possible cause:

• Electric throttle control actuator (TP sensor 1 and 2)