P0123 2007 Toyota Highlander 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 2007 Toyota Highlander 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 2007 Toyota Highlander 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 2007 Toyota Highlander?
- 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 2007 Toyota Highlander?
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 P0123 2007 Toyota Highlander 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 2007 Toyota Highlander code?
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Frequently Asked Questions about P0123 2007 Toyota Highlander Code
1. What are the common symptoms of OBDII code P0123 in a 2007 Toyota Highlander?
- Common symptoms include high idling speed, stalling, hesitation or jerking during acceleration, decreased fuel efficiency, and the Check Engine Light illuminating.
2. What does the OBDII code P0123 'Throttle Position Sensor/Switch 'A' Circuit High Input' indicate?
- This code indicates that the Engine Control Module (ECM) has detected a high voltage input from the throttle position sensor, suggesting a potential issue with the sensor or its circuit.
3. What are the possible causes of OBDII code P0123 in a 2007 Toyota Highlander?
- Possible causes include a faulty throttle position sensor, a short or open circuit in the sensor's wiring, a damaged connector, or a malfunctioning ECM.
4. How can I diagnose the OBDII code P0123 in my 2007 Toyota Highlander?
- Diagnosing this code typically involves using a scan tool to retrieve the code, checking the throttle position sensor's voltage readings, inspecting the sensor's wiring and connector for damage, and testing the sensor's operation.
5. Can I still drive my 2007 Toyota Highlander with OBDII code P0123?
- It is not recommended to drive with this code present, as it can lead to poor engine performance and potential safety hazards. It is best to address the issue promptly.
6. How can I repair OBDII code P0123 in my 2007 Toyota Highlander?
- Repair options may include replacing the throttle position sensor, repairing any damaged wiring or connectors, or reprogramming the ECM. It is advisable to consult a professional mechanic for proper diagnosis and repair.
7. Will resetting the Check Engine Light resolve OBDII code P0123 in my 2007 Toyota Highlander?
- Simply resetting the Check Engine Light will not fix the underlying issue causing the code. It is essential to diagnose and address the root cause of the problem for a proper repair.
8. Is it safe to continue driving if the Check Engine Light is flashing due to code P0123 in my 2007 Toyota Highlander?
- A flashing Check Engine Light indicates a severe issue that requires immediate attention. It is recommended to avoid driving the vehicle and have it inspected by a mechanic as soon as possible.
9. Can a dirty throttle body cause OBDII code P0123 in a 2007 Toyota Highlander?
- While a dirty throttle body can contribute to related issues, OBDII code P0123 specifically indicates a problem with the throttle position sensor or its circuit. Cleaning the throttle body may improve performance but is unlikely to resolve this code.
10. How much does it typically cost to repair OBDII code P0123 in a 2007 Toyota Highlander?
- The cost of repairing OBDII code P0123 can vary depending on the cause of the issue, labor rates, and parts needed. It is advisable to get a diagnostic from a professional mechanic to determine the exact repair cost.
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