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P2128 2010 Nissan Pathfinder Code - Accelerator Pedal Position Sensor Circuit

Quick Answer

The P2128 diagnostic trouble code (DTC) for a 2010 Nissan Pathfinder relates to the Accelerator Pedal Position Sensor Circuit. Common causes include Faulty accelerator pedal position sensor, Wiring issues in the accelerator pedal position sensor circuit, Corrosion or poor connections in the sensor circuit. 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 2010 Nissan Pathfinder indicates Accelerator Pedal Position Sensor Circuit.
Common causes
Common causes include Faulty accelerator pedal position sensor, Wiring issues in the accelerator pedal position sensor circuit, Corrosion or poor connections in the sensor circuit.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 14, 2024
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Code P2128 2010 Nissan Pathfinder Description

The P2128 diagnostic trouble code (DTC) for a 2010 Nissan Pathfinder relates to the Accelerator Pedal Position Sensor Circuit. This code indicates that there is a malfunction in the circuit that controls the accelerator pedal position sensor. The accelerator pedal position sensor is a crucial component of the vehicle's electronic throttle control system, which determines how much fuel and air should be delivered to the engine based on the driver's input through the accelerator pedal.

OBDII Code P2128 2010 Nissan Pathfinder - Accelerator Pedal Position Sensor Circuit
P2128 2010 Nissan Pathfinder Code - Accelerator Pedal Position Sensor Circuit

Common Causes of P2128 2010 Nissan Pathfinder

  1. Faulty accelerator pedal position sensor
  2. Wiring issues in the accelerator pedal position sensor circuit
  3. Corrosion or poor connections in the sensor circuit
  4. Issues with the ECM
  5. Environmental factors such as moisture or debris affecting the sensor

Symptoms of P2128 2010 Nissan Pathfinder

  1. Reduced engine power
  2. Poor acceleration
  3. Rough idling
  4. Stalling
  5. Illumination of the Check Engine Light

How to Fix P2128 2010 Nissan Pathfinder

  1. Begin by connecting a diagnostic scanner to the vehicle's OBD-II port to retrieve the specific trouble code and confirm the issue.
  2. Inspect the accelerator pedal position sensor and its wiring for any visible damage, corrosion, or loose connections.
  3. Test the sensor's output voltage using a multimeter to ensure it is within the manufacturer's specified range.
  4. If the sensor is faulty, replace it with a new one following the manufacturer's guidelines.
  5. Clear the trouble code from the ECM's memory using the diagnostic scanner and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P2128 2010 Nissan Pathfinder

The cost of repairing a P2128 code on a 2010 Nissan Pathfinder can vary depending on the root cause of the issue. In general, the replacement of an accelerator pedal position sensor can range from $100 to $300, including parts and labor. Additional costs may apply if there are wiring issues or other components that need to be replaced. It is advisable to consult with a trusted mechanic or auto repair shop to get an accurate estimate based on the specific circumstances of your vehicle. Keep in mind that labor rates can vary between different locations and service providers.

When is the Code Detected?

An excessively low voltage from the APP sensor 2 is sent to ECM.

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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 2010 Nissan Pathfinder Code

1. What are the common symptoms of OBDII code P2128 in a 2010 Nissan Pathfinder?

The common symptoms of code P2128 include a decrease in engine power, hesitation or stalling when accelerating, and the vehicle going into limp mode.

2. What does the OBDII code P2128 for a 2010 Nissan Pathfinder indicate?

Code P2128 indicates a problem with the accelerator pedal position sensor circuit.

3. What are the possible causes of OBDII code P2128 in a 2010 Nissan Pathfinder?

Possible causes of code P2128 include a faulty accelerator pedal position sensor, damaged wiring or connectors in the sensor circuit, or a malfunctioning throttle body.

4. How can I diagnose the issue causing OBDII code P2128 in my 2010 Nissan Pathfinder?

To diagnose the issue, you can use a scan tool to check for the code, inspect the accelerator pedal position sensor and its wiring for any damage, and perform a thorough visual inspection of related components.

5. Can I continue driving my 2010 Nissan Pathfinder with OBDII code P2128?

It is not recommended to drive your vehicle with code P2128 as it can lead to unsafe driving conditions and potential further damage to the vehicle. It's best to address the issue promptly.

6. How can I repair OBDII code P2128 in my 2010 Nissan Pathfinder?

Repairing code P2128 may involve replacing the accelerator pedal position sensor, repairing or replacing damaged wiring, or addressing any issues with the throttle body.

7. Is it possible to reset OBDII code P2128 in a 2010 Nissan Pathfinder without fixing the underlying issue?

While you can clear the code with a scan tool, it is not recommended as the issue causing the code will still persist, potentially leading to further problems down the line.

8. Are there any DIY tips for troubleshooting OBDII code P2128 in a 2010 Nissan Pathfinder?

DIY tips for troubleshooting code P2128 include checking the sensor wiring for loose connections, ensuring the sensor is properly mounted, and inspecting the throttle body for any visible issues.

9. How much does it typically cost to fix OBDII code P2128 in a 2010 Nissan Pathfinder?

The cost of fixing code P2128 can vary depending on the exact cause of the issue and whether you choose to do the repairs yourself or take your vehicle to a mechanic. Costs may range from a few hundred to over a thousand dollars.

10. Can a mechanic easily fix OBDII code P2128 in a 2010 Nissan Pathfinder?

A qualified mechanic should be able to diagnose and fix code P2128 in your 2010 Nissan Pathfinder efficiently, as they have the experience and tools necessary to address the issue effectively.

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