P2138 2006 Toyota Highlander Code - Throttle Pedal Position Sensor/Switch 'D'/'E' Voltage Correlation
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
- P2138 2006 Toyota Highlander indicates Throttle Pedal Position Sensor/Switch 'D'/'E' Voltage Correlation.
- 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 P2138 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 P2138 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 P2138 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 P2138 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.
Need more information about the P2138 2006 Toyota Highlander code?
Need more information on how to fix the P2138 2006 Toyota Highlander code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P2138 2006 Toyota Highlander code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P2138 2006 Toyota Highlander Code
1. What does OBDII code P2138 mean for my 2006 Toyota Highlander?
- OBDII code P2138 indicates an issue with the Throttle Pedal Position Sensor/Switch 'D'/'E' Voltage Correlation in your vehicle.
2. What are the common symptoms of a P2138 code in a Toyota Highlander?
- Common symptoms of a P2138 code may include reduced engine power, hesitation or stalling when accelerating, and the vehicle going into limp mode.
3. What are the possible causes of a P2138 code on a 2006 Toyota Highlander?
- The P2138 code on a 2006 Toyota Highlander can be caused by a faulty throttle position sensor, issues with the throttle body, wiring problems, or a malfunctioning electronic control module.
4. How serious is a P2138 code on a Toyota Highlander?
- A P2138 code should be taken seriously as it can affect the performance and drivability of your Toyota Highlander. It is best to address the issue promptly to prevent further damage.
5. Can I continue driving my Toyota Highlander with a P2138 code?
- It is not recommended to continue driving your Toyota Highlander with a P2138 code, as it may lead to further damage or safety concerns. It is best to have the issue diagnosed and repaired as soon as possible.
6. What are some DIY repair tips for a P2138 code on a 2006 Toyota Highlander?
- DIY repair tips for a P2138 code may include checking the throttle position sensor for proper operation, inspecting the wiring for any damage, and cleaning the throttle body to ensure proper functioning.
7. How much does it typically cost to repair a P2138 code on a Toyota Highlander?
- The cost of repairing a P2138 code on a Toyota Highlander can vary depending on the underlying cause of the issue. It is recommended to get a diagnostic from a qualified mechanic for an accurate estimate.
8. Can a P2138 code be reset without fixing the underlying issue?
- While you can clear the P2138 code using an OBDII scanner, it is not recommended to do so without addressing the underlying issue. The code is likely to reappear if the problem is not fixed.
9. Is it possible to prevent a P2138 code from occurring in my Toyota Highlander?
- Regular maintenance, such as keeping the throttle body clean, checking the throttle position sensor, and addressing any wiring issues promptly, can help prevent a P2138 code from occurring in your Toyota Highlander.
10. How long does it take to repair a P2138 code on a 2006 Toyota Highlander?
- The time it takes to repair a P2138 code on a 2006 Toyota Highlander can vary depending on the specific cause of the issue and the availability of parts. It is best to consult with a mechanic for an estimated repair time.
Discuss the causes and fixes for P2138 2006 Toyota Highlander OBDII Code
Code P2138 2006 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.
