AutoCodes – Toyota – P2128 2014 Toyota RAV4

P2128 2014 Toyota RAV4 Code - Throttle Pedal Position Sensor/Switch 'E' Circuit Input High

Quick Answer

The Accelerator Pedal Position (APP) sensor is built into the accelerator pedal sensor assembly and has 2 sensor circuits: VPA (main) and VPA2 (sub). Common causes include Faulty Accelerator Pedal Position (APP) Sensor, Accelerator Pedal Position Sensor harness is open or shorted, Accelerator Pedal 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: P2128 2014 Toyota RAV4 indicates Throttle Pedal Position Sensor/Switch 'E' Circuit Input High.
Common causes: Common causes include Faulty Accelerator Pedal Position (APP) Sensor, Accelerator Pedal Position Sensor harness is open or shorted, Accelerator Pedal 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.

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Code Popularity 221

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Sep 17, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P2128 2014 Toyota RAV4 Description

The Accelerator Pedal Position (APP) sensor is built into the accelerator pedal sensor assembly and has 2 sensor circuits: VPA (main) and VPA2 (sub). This sensor is a non-contact type sensor and uses Hall-effect elements in order to yield accurate signals even in extreme driving conditions, such as at high speeds as well as very low speeds. The voltage, which is applied to terminals VPA and VPA2 of the Engine Control Module (ECM), varies between 0.5 V and 4.75 V in proportion to the operating angle of the accelerator pedal (throttle valve). A signal from VPA indicates the actual accelerator pedal opening angle (throttle valve opening angle) and is used for engine control. A signal from VPA2 conveys the status of the VPA circuit and is used to check the accelerator pedal position sensor itself.
The ECM monitors the actual accelerator pedal opening angle (throttle valve opening angle) through the signals from VPA and VPA2 and controls the throttle actuator according to these signals.
When either the output voltage of VPA or VPA2 deviates from the standard range, or the difference between the output voltages of the 2 sensor circuits is more than the threshold, the ECM determines that there is a malfunction in the accelerator pedal position sensor. The ECM then illuminates the MIL and stores a Diagnostic Trouble Code (DTC).

OBDII Code P2128 2014 Toyota RAV4 - Throttle Pedal Position Sensor/Switch 'E' Circuit Input High - AutoCodes.com — P2128 2014 Toyota RAV4 Code - Throttle Pedal Position Sensor/Switch 'E' Circuit Input High

What does this mean?

What are the Possible Causes of the DTC P2128 2014 Toyota RAV4?

Faulty Accelerator Pedal Position (APP) Sensor
Accelerator Pedal Position Sensor harness is open or shorted
Accelerator Pedal Position Sensor circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P2128 2014 Toyota RAV4?

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 P2128 2014 Toyota RAV4 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 P2128 2014 Toyota RAV4 code?

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P2128 2014 Toyota RAV4 Code

1. What are the common symptoms of OBDII code P2128 in a 2014 Toyota RAV4?

- Common symptoms include issues with acceleration, reduced engine power, and the vehicle going into "limp mode" for safety reasons.

2. What does the Throttle Pedal Position Sensor/Switch 'E' Circuit Input High mean in relation to code P2128 in a 2014 Toyota RAV4?

- This code indicates that the voltage signal from the throttle pedal position sensor or switch is higher than expected, potentially causing drivability issues.

3. What are the possible causes of OBDII code P2128 in a 2014 Toyota RAV4?

- The code may be triggered by a faulty throttle pedal position sensor, damaged wiring in the sensor circuit, or issues with the engine control module (ECM).

4. How can I diagnose OBDII code P2128 in my 2014 Toyota RAV4?

- Diagnosis typically involves using a scan tool to read the code, testing the throttle pedal position sensor for proper voltage signals, and inspecting the sensor wiring for any damage.

5. Can I continue driving my 2014 Toyota RAV4 with OBDII code P2128?

- It is not recommended to drive with this code active as it can lead to poor engine performance and potentially unsafe driving conditions. It is best to address the issue promptly.

6. How can I repair OBDII code P2128 in a 2014 Toyota RAV4?

- Repair may involve replacing the throttle pedal position sensor, repairing any damaged wiring, or reprogramming the ECM to address the high voltage input issue.

7. Are there any DIY tips for fixing OBDII code P2128 in a 2014 Toyota RAV4?

- While some may attempt DIY repairs, it is advisable to consult a qualified technician to accurately diagnose and repair the underlying cause of the code for optimal results.

8. How much does it cost to fix OBDII code P2128 in a 2014 Toyota RAV4?

- The cost of repair can vary depending on the specific cause of the code and the labor rates in your area. It is recommended to obtain quotes from reputable mechanics for an accurate estimate.

9. Can a faulty throttle pedal position sensor cause other OBDII codes to appear in a 2014 Toyota RAV4?

- Yes, a faulty throttle pedal position sensor can cause other related codes to appear, affecting the vehicle's performance and triggering warning lights on the dashboard.

10. Is it possible to prevent OBDII code P2128 in a 2014 Toyota RAV4?

- While some causes of the code may be unavoidable, regular maintenance checks, prompt attention to any warning signs, and keeping the throttle system clean can help reduce the likelihood of this issue.