P2123 2006 Toyota Highlander Code - Throttle Pedal Position Sensor/Switch 'D' Circuit Input High
Quick Answer
The Accelerator Pedal Position (APP) sensor is mounted on the accelerator pedal to detect the angle of the accelerator pedal. Common causes include Faulty Accelerator Pedal Position (APP) Sensor, Accelerator Pedal Position (APP) Sensor harness is open or shorted, Accelerator Pedal Position (APP) 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
- P2123 2006 Toyota Highlander indicates Throttle Pedal Position Sensor/Switch 'D' Circuit Input High.
- Common causes
- Common causes include Faulty Accelerator Pedal Position (APP) Sensor, Accelerator Pedal Position (APP) Sensor harness is open or shorted, Accelerator Pedal Position (APP) 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 P2123 2006 Toyota Highlander Description
In the accelerator pedal position sensor, the voltage applied to terminals VPA and VPA2 of the Engine Control Module (ECM) changes between 0 V and 5 V in proportion to the angle of the accelerator pedal. The VPA is a signal to indicate the actual accelerator pedal angle and is used for the engine control. VPA2 is used to detect malfunctions of the sensor itself.
The ECM monitors the accelerator pedal angle from VPA and VPA2 signal outputs, and controls the throttle motor based on these signals.
What are the Possible Causes of the DTC P2123 2006 Toyota Highlander?
- Faulty Accelerator Pedal Position (APP) Sensor
- Accelerator Pedal Position (APP) Sensor harness is open or shorted
- Accelerator Pedal Position (APP) Sensor circuit poor electrical connection
- Faulty Engine Control Module (ECM)
How to Fix the DTC P2123 2006 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 P2123 2006 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.
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Frequently Asked Questions about P2123 2006 Toyota Highlander Code
1. What are the common symptoms of OBDII code P2123 in a 2006 Toyota Highlander?
- Common symptoms include a check engine light, reduced engine power, throttle response issues, and potential stalling or hesitation.
2. What does the OBDII code P2123 indicate in a 2006 Toyota Highlander?
- This code indicates an issue with the Throttle Pedal Position Sensor/Switch 'D' Circuit Input High, meaning the sensor is reporting a higher voltage signal than expected.
3. What are the possible causes of OBDII code P2123 in a 2006 Toyota Highlander?
- Possible causes include a faulty throttle pedal position sensor, wiring issues, a poor electrical connection, or a problem with the engine control module.
4. How can I diagnose the cause of OBDII code P2123 in my 2006 Toyota Highlander?
- Diagnosis typically involves checking the throttle pedal position sensor for proper operation, inspecting the wiring for damage, and testing the electrical connections for any issues.
5. Can I drive my 2006 Toyota Highlander with OBDII code P2123?
- It is not recommended to drive the vehicle with this code present, as it can lead to unsafe driving conditions and potential further damage to the engine.
6. How can I repair OBDII code P2123 in my 2006 Toyota Highlander?
- Repair typically involves replacing the throttle pedal position sensor if faulty, repairing any damaged wiring or connections, and clearing the trouble codes from the engine control module.
7. Are there any DIY tips for fixing OBDII code P2123 in a 2006 Toyota Highlander?
- While some may attempt to replace the throttle pedal position sensor themselves, it is recommended to have a professional diagnose and repair this issue due to the complexity of the system.
8. How much does it cost to repair OBDII code P2123 in a 2006 Toyota Highlander?
- The cost of repair can vary depending on the cause of the issue, but it typically ranges from $100 to $300 for parts and labor.
9. Will OBDII code P2123 cause damage to my 2006 Toyota Highlander if left unrepaired?
- Ignoring this code can potentially lead to further engine performance issues and damage over time, so it is best to address the problem promptly.
10. Can resetting the check engine light clear OBDII code P2123 in a 2006 Toyota Highlander?
- Resetting the check engine light may temporarily clear the code, but it will likely reappear if the underlying issue causing the code is not resolved.
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