P2122 2007 Toyota Highlander Code - Throttle Pedal Position Sensor/Switch 'D' Circuit Input Low
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
- P2122 2007 Toyota Highlander indicates Throttle Pedal Position Sensor/Switch 'D' Circuit Input Low.
- 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 P2122 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 P2122 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 P2122 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 P2122 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 P2122 2007 Toyota Highlander code?
Need more information on how to fix the P2122 2007 Toyota Highlander code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P2122 2007 Toyota Highlander code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P2122 2007 Toyota Highlander Code
1. What are the common symptoms of OBDII code P2122 in a 2007 Toyota Highlander?
The common symptoms of code P2122 include reduced engine power, hesitation or stalling when accelerating, and the vehicle going into limp mode.
2. What does the Throttle Pedal Position Sensor/Switch 'D' Circuit Input Low mean?
This code indicates that the voltage signal from the throttle pedal position sensor or switch 'D' is lower than expected by the Engine Control Module (ECM).
3. What are the possible causes of OBDII code P2122 in a 2007 Toyota Highlander?
The possible causes of code P2122 include a faulty throttle pedal position sensor, damaged wiring or connectors in the sensor circuit, or a problem with the ECM.
4. How can I diagnose the cause of OBDII code P2122 in my 2007 Toyota Highlander?
Diagnosing code P2122 involves checking the throttle pedal position sensor for proper operation, inspecting the sensor wiring and connectors for damage, and testing the ECM for any faults.
5. Can I continue driving my 2007 Toyota Highlander with OBDII code P2122?
It is not recommended to drive your vehicle with code P2122 as it can lead to unsafe driving conditions and potential damage to the engine components.
6. How can I repair OBDII code P2122 in my 2007 Toyota Highlander?
To repair code P2122, you may need to replace the throttle pedal position sensor, repair any damaged wiring or connectors, or reprogram the ECM if necessary.
7. Will resetting the OBDII code P2122 in my 2007 Toyota Highlander make it go away permanently?
Resetting the code may temporarily clear the check engine light, but if the underlying issue causing code P2122 is not addressed, the code is likely to reappear.
8. How much does it typically cost to repair OBDII code P2122 in a 2007 Toyota Highlander?
The cost of repairing code P2122 can vary depending on the cause of the issue, but it may range from $100 to $300 for parts and labor.
9. Can a DIY enthusiast fix OBDII code P2122 in a 2007 Toyota Highlander?
If you have experience with automotive repairs and the necessary tools, you may be able to diagnose and repair code P2122 yourself. However, it is recommended to consult a professional if you are unsure.
10. Is OBDII code P2122 a common issue in 2007 Toyota Highlanders?
While code P2122 may not be a common issue in 2007 Toyota Highlanders, it can still occur due to various factors such as sensor wear, wiring issues, or ECM malfunctions.
Discuss the causes and fixes for P2122 2007 Toyota Highlander OBDII Code
Code P2122 2007 Toyota Highlander comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
