P1128 Toyota Code - Throttle Control Motor Lock Malfunction
Quick Answer
The P1128 diagnostic trouble code for Toyota vehicles indicates a Throttle Control Motor Lock Malfunction. Common causes include Faulty throttle control motor, Wiring or connector issues, Electronic control module failure. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P1128 Toyota indicates Throttle Control Motor Lock Malfunction.
- Common causes
- Common causes include Faulty throttle control motor, Wiring or connector issues, Electronic control module failure.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
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Code P1128 Toyota Description
The P1128 diagnostic trouble code for Toyota vehicles indicates a Throttle Control Motor Lock Malfunction. This means that the electronic throttle control system is experiencing issues with the motor that controls the throttle opening. The throttle control motor is responsible for adjusting the throttle valve position based on driver input and signals from the engine control module. When this motor malfunctions, it can lead to poor engine performance, reduced fuel efficiency, and potential safety hazards.
Common Causes of P1128 Toyota
- Faulty throttle control motor
- Wiring or connector issues
- Electronic control module failure
- Throttle body malfunction
- Environmental factors such as moisture or debris in the throttle system
Symptoms of P1128 Toyota
- Reduced engine power
- Unresponsive throttle pedal
- Engine stalling or surging
- Check Engine light illuminated
- Poor fuel economy
How to Fix P1128 Toyota
- Diagnose the issue using a scan tool to confirm the P1128 code.
- Inspect the throttle control motor, wiring, and connectors for any signs of damage or corrosion.
- Test the electronic control module for proper operation.
- Clean or replace the throttle body if necessary.
- Clear the code and perform a test drive to ensure the issue has been resolved.
Cost to Fix P1128 Toyota
The cost of repairing a Throttle Control Motor Lock Malfunction can vary depending on the specific cause of the issue and the extent of the repairs needed. On average, the repair costs for this code can range from $200 to $500, including parts and labor. However, as mentioned earlier, labor rates at auto repair shops can vary, so it's recommended to obtain quotes from local shops for a more accurate estimate.
When is the Code Detected?
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Frequently Asked Questions about P1128 Toyota Code
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Discuss the causes and fixes for P1128 Toyota OBDII Code
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hi all . to fix this code on toyota land cruiser .check on the driver side fuse box . remove the fuse box and check on the back side of the fuse box . you will get the relays . change the relay and ears the code and enjoy the driving
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The previous post mentions the relays for the throttle body, but I'm not sure for what model and year was that repair.
For your model and year, the most common problem is the Throttle Body Assembly. The factory service manual and a national database of repairs only list the Throttle Body Assembly as the possible repair.
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