P1225 Buick Needle Lift Sensor Malfunction

P1226 Buick Control Sleeve Sensor Malfunction

Possible causes
  • Electric throttle control actuator (TP sensor 1 and 2)
    • What about the obd code?
  • Closed throttle position learning is not performed successfully, repeatedly.
    • Symptoms
    – Engine Light ON (or Service Engine Soon Warning Light)
    P1226 Buick 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.

    Buick Vehicle:Buick Regal – ?Buick Riviera – ?Buick LaCrosse – ?David Dunbar Buick – Buick Century – Buick LaCrosse – Buick LeSabre – Buick Lucerne – Buick Park Avenue – Buick Regal – Buick Verano – Buick Enclave – Buick Encore – Buick Rainier – Buick Rendezvous – Buick Terraza – Buick Riviera