P1128 Toyota Code - Throttle Control Motor Lock Malfunction
Quick Answer
The throttle control motor is operated by the Engine Control Module (ECM) and it opens and closes the throttle valve. Common causes include Faulty Throttle Control Motor, Throttle Control Motor harness is open or shorted, Throttle Control Motor circuit poor electrical connection. 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, Throttle Control Motor harness is open or shorted, Throttle Control Motor circuit poor electrical connection.
- 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.
Code P1128 Toyota Description
The current opening angle of the throttle valve is detected by the throttle position sensor and it provides feedback to the ECM to control the throttle control motor to make the throttle valve opening angle properly in response to driving condition.
What are the Possible Causes of the DTC P1128 Toyota?
- Faulty Throttle Control Motor
- Throttle Control Motor harness is open or shorted
- Throttle Control Motor circuit poor electrical connection
How to Fix the DTC P1128 Toyota?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P1128 Toyota code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
Need more information about the P1128 Toyota code?
Need more information on how to fix the P1128 Toyota code? Get Access to Factory Service Manuals
Need Help with the Code?
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Frequently Asked Questions about P1128 Toyota Code
No Frequently Asked Questions about P1128 Toyota Code found.
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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