Toyota DTC P1129 – Electric Throttle Control System
DTC P1129 meaning on Toyota
DTC P1129 for Toyota refers to an issue with the Electric Throttle Control System. This code indicates that there is a malfunction in the system related to the throttle control.
Toyota DTC P1129 symptoms
- Check Engine Light illuminated
- Reduced engine power
- Difficulty accelerating
- Engine stalling
Toyota DTC P1129 causes
- Dirty throttle body
- Throttle position sensor malfunction
- Wiring issues in the throttle control circuit
- Faulty electronic throttle control unit
Toyota DTC P1129 seriousness
The DTC P1129 code should be addressed promptly as it can lead to drivability issues and potential safety concerns. Ignoring this code may result in further damage to the vehicle.
How to diagnose DTC P1129 on Toyota
- Use a diagnostic scanner to retrieve the trouble codes
- Inspect the throttle body for dirt or carbon buildup
- Check the throttle position sensor for proper operation
- Inspect the wiring and connectors in the throttle control circuit
How to fix DTC P1129 on Toyota
- Clean the throttle body to remove any dirt or carbon buildup
- Replace the throttle position sensor if faulty
- Repair any damaged wiring or connectors in the throttle control circuit
- If necessary, replace the electronic throttle control unit
How to erase DTC P1129 on Toyota
- Fix the underlying issue causing the DTC P1129 code
- Use a diagnostic scanner to clear the trouble codes
- Ensure the Check Engine Light is no longer illuminated
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