P1129 LEXUS Code - Electric Throttle Control System Malfunction
|P1129 LEXUS code possible causes
- Faulty Electronic Throttle Control System (ETCS) Actuator
- Electronic Throttle Control System (ETCS) Actuator harness is open or shorted
- Electronic Throttle Control System (ETCS) Actuator circuit poor electrical connection
|How do I fix the P1129 LEXUS code?Check the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.
|Cost of diagnosing the P1129 LEXUS code
Labor: 1.0The cost of diagnosing the P1129 LEXUS code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.
|When is the P1129 LEXUS code detected?The P1129 code is set when the throttle opening angle continues to vary great from target throttle opening angle.
|What are P1129 LEXUS code possible symptoms?
- Engine Light ON (or Service Engine Soon Warning Light)
|P1129 LEXUS code descriptionElectric Throttle Control System (ETCS) is composed of the throttle motor to operate the throttle valve, the electromagnetic clutch to connect the throttle motor with the throttle valve, the throttle position sensor to detect the opening angle of the throttle valve, the accelerator pedal position sensor to detect the accelerator pedal position, the Engine Control Module (ECM) to control the ETCS and the one valve type throttle body.
The ECM controls the throttle motor to make the throttle valve opening angle properly in response driving condition.
The throttle position sensor which is mounted on the throttle body detects the opening angle of the throttle valve, and it provides feedback to the ECM to control the throttle motor.
If the ETCS has a malfunction, the ECM shuts down the power for the throttle motor and the magnetic clutch, and the throttle valve is fully closed by the return spring.
However, the opening angle of the throttle valve can be controlled by the accelerator pedal through the throttle cable.
|Need more information with the P1129 LEXUS code?Need more information on how to fix the P1129 LEXUS code? Get Access to Factory Service Manuals
|Need help with a P1129 LEXUS code?Get the P1129 Lexus code diagnosed by a professional: Find a repair shop in your area
|P1129 LEXUS code commentsHelp us improve AutoCodes.com. Leave a comment below or tell us if the information above helps you fix the code. What are the symptoms on your vehicle for the P1129 Lexus code? Have you replaced any parts?
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