P0123 2006 Toyota Prius Code - Throttle Position Sensor/Switch 'A' Circuit High Input
Quick Answer
The Throttle Position Sensor (TPS) responds to the accelerator pedal movement. Common causes include Faulty throttle position sensor, Throttle position sensor harness is open or shorted, Throttle position sensor 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
- P0123 2006 Toyota Prius indicates Throttle Position Sensor/Switch 'A' Circuit High Input.
- Common causes
- Common causes include Faulty throttle position sensor, Throttle position sensor harness is open or shorted, Throttle position sensor 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 P0123 2006 Toyota Prius Description
Idle position of the throttle valve is determined by the ECM receiving the signal from the throttle position sensor. This sensor controls engine operation such as fuel cut. On the other hand, the Wide open and closed throttle position switch, which is built into the throttle position sensor unit, is not used for engine control.
What are the Possible Causes of the DTC P0123 2006 Toyota Prius?
- Faulty throttle position sensor
- Throttle position sensor harness is open or shorted
- Throttle position sensor circuit poor electrical connection
How to Fix the DTC P0123 2006 Toyota Prius?
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.
Code Tech Notes
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0123 2006 Toyota Prius 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 P0123 2006 Toyota Prius code?
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Frequently Asked Questions about P0123 2006 Toyota Prius Code
1. What are the common symptoms of OBDII code P0123 on a 2006 Toyota Prius?
The common symptoms of code P0123 include issues with acceleration, hesitation or stalling when pressing the gas pedal, and a decrease in fuel efficiency.
2. What does the Throttle Position Sensor/Switch 'A' Circuit High Input mean in relation to code P0123 on a 2006 Toyota Prius?
The code P0123 indicates that the Engine Control Module (ECM) has detected a high voltage input from the throttle position sensor or its circuit.
3. What are the possible causes of code P0123 on a 2006 Toyota Prius?
Possible causes of code P0123 include a faulty throttle position sensor, a damaged throttle body, wiring or connector issues, or a problem with the ECM itself.
4. How can I diagnose the root cause of OBDII code P0123 on my 2006 Toyota Prius?
To diagnose code P0123, you can start by checking the throttle position sensor's wiring and connector for any damage or corrosion. You may also need to test the sensor itself and the throttle body for proper operation.
5. Can I drive my 2006 Toyota Prius with OBDII code P0123?
It is not recommended to drive your vehicle with code P0123, as it can lead to performance issues and potentially unsafe driving conditions. It is best to address the issue promptly.
6. Is it possible to reset OBDII code P0123 on a 2006 Toyota Prius by disconnecting the battery?
Disconnecting the battery may temporarily clear the code, but it is not a permanent solution. The underlying issue causing the code needs to be identified and fixed for the code to be cleared permanently.
7. How much does it typically cost to repair OBDII code P0123 on a 2006 Toyota Prius?
The cost of repairing code P0123 can vary depending on the root cause of the issue. It may range from a few hundred dollars for a simple sensor replacement to over a thousand dollars for more complex repairs involving the throttle body or ECM.
8. Can a DIY enthusiast fix OBDII code P0123 on a 2006 Toyota Prius?
Depending on your skill level and access to tools, you may be able to replace the throttle position sensor yourself. However, diagnosing and repairing wiring or ECM issues may require professional assistance.
9. How long does it take to repair OBDII code P0123 on a 2006 Toyota Prius?
The repair time for code P0123 can vary based on the specific cause of the issue and the availability of parts. Simple sensor replacements may take an hour or two, while more complex repairs could take several hours or more.
10. Will fixing OBDII code P0123 improve the performance and fuel efficiency of my 2006 Toyota Prius?
Yes, addressing code P0123 and fixing the underlying issue with the throttle position sensor can help restore proper engine performance and improve fuel efficiency in your Toyota Prius.
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