P2120 2007 Toyota Highlander Code - Throttle Pedal Position Sensor/Switch 'D' Circuit
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
- P2120 2007 Toyota Highlander indicates Throttle Pedal Position Sensor/Switch 'D' Circuit.
- 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 P2120 2007 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 P2120 2007 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 P2120 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 P2120 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 P2120 2007 Toyota Highlander code?
Need more information on how to fix the P2120 2007 Toyota Highlander code? Get Access to Factory Service Manuals
Need Help with the Code?
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Frequently Asked Questions about P2120 2007 Toyota Highlander Code
1. What are common symptoms of OBDII code P2120 in a 2007 Toyota Highlander?
- Common symptoms include issues with acceleration, reduced engine power, and potentially a non-responsive throttle pedal.
2. What could cause the Throttle Pedal Position Sensor/Switch 'D' Circuit error code (P2120) in a 2007 Toyota Highlander?
- Possible causes include a faulty throttle pedal position sensor, wiring issues in the circuit, or a malfunction in the engine control module.
3. How can I diagnose the Throttle Pedal Position Sensor/Switch 'D' Circuit error code (P2120) in my 2007 Toyota Highlander?
- You can diagnose this issue by conducting a thorough inspection of the throttle pedal sensor, checking the wiring for any damage, and using an OBDII scanner to retrieve the specific error code.
4. Can I continue to drive my 2007 Toyota Highlander with OBDII code P2120 present?
- It is not recommended to drive your vehicle with the P2120 code, as it can lead to unsafe driving conditions and potential damage to the engine or other components.
5. How do I repair the Throttle Pedal Position Sensor/Switch 'D' Circuit error code (P2120) in my 2007 Toyota Highlander?
- Repair typically involves replacing the throttle pedal position sensor, repairing any damaged wiring, or reprogramming the engine control module to resolve the issue.
6. Is it possible to reset the OBDII code P2120 in a 2007 Toyota Highlander without fixing the underlying issue?
- While you can clear the error code using an OBDII scanner, it is crucial to address the root cause of the problem to prevent the code from reoccurring.
7. Are there any DIY tips for troubleshooting OBDII code P2120 in a 2007 Toyota Highlander?
- DIY tips include checking for loose or damaged wiring, ensuring proper sensor connections, and consulting the vehicle's service manual for specific testing procedures.
8. Can extreme weather conditions contribute to the occurrence of OBDII code P2120 in a 2007 Toyota Highlander?
- Yes, extreme temperatures or moisture can impact the performance of electronic components, potentially leading to issues with the throttle pedal position sensor circuit.
9. How long does it typically take to repair the Throttle Pedal Position Sensor/Switch 'D' Circuit error code (P2120) in a 2007 Toyota Highlander?
- Repair time can vary depending on the exact cause of the issue, but it may take a few hours to a full day for diagnosis and replacement of faulty components.
10. Is it necessary to visit a mechanic or dealership for resolving OBDII code P2120 in a 2007 Toyota Highlander?
- While it is recommended to seek professional help for accurate diagnosis and repair, experienced DIY enthusiasts with the proper tools and knowledge may be able to address the issue themselves.
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