Engine-Codes.com
Engine-Codes – Nissan – P2128 2012 Nissan Pathfinder

P2128 2012 Nissan Pathfinder Code - Accelerator Pedal Position Sensor Circuit

Quick Answer

The P2128 diagnostic trouble code (DTC) for a 2012 Nissan Pathfinder relates to the Accelerator Pedal Position Sensor Circuit. Common causes include Faulty accelerator pedal position sensor, Wiring or connector issues in the sensor circuit, Corrosion or damage to sensor components. 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 2012 Nissan Pathfinder indicates Accelerator Pedal Position Sensor Circuit.
Common causes
Common causes include Faulty accelerator pedal position sensor, Wiring or connector issues in the sensor circuit, Corrosion or damage to sensor components.
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 17, 2024
💬 Need more help? Ask Auto Expert for instant answers — it's free!
AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play

Code P2128 2012 Nissan Pathfinder Description

The P2128 diagnostic trouble code (DTC) for a 2012 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 vital component of the vehicle's electronic throttle control system. It is responsible for sending signals to the engine control module (ECM) regarding the position of the accelerator pedal, which in turn helps regulate the amount of air and fuel entering the engine.

OBDII Code P2128 2012 Nissan Pathfinder - Accelerator Pedal Position Sensor Circuit
P2128 2012 Nissan Pathfinder Code - Accelerator Pedal Position Sensor Circuit

Common Causes of P2128 2012 Nissan Pathfinder

  1. Faulty accelerator pedal position sensor
  2. Wiring or connector issues in the sensor circuit
  3. Corrosion or damage to sensor components
  4. ECM software or hardware malfunction
  5. Electrical system issues

Symptoms of P2128 2012 Nissan Pathfinder

  1. Reduced engine power
  2. Difficulty accelerating
  3. Engine stalling or surging
  4. Check Engine Light illuminated
  5. Poor fuel efficiency

How to Fix P2128 2012 Nissan Pathfinder

  1. Begin by conducting a thorough inspection of the accelerator pedal position sensor and its wiring harness for any visible damage or corrosion.
  2. Use a multimeter to test the sensor's resistance and voltage output to determine if it is functioning within the manufacturer's specifications.
  3. If the sensor is found to be faulty, replace it with a new, OEM-quality accelerator pedal position sensor.
  4. Clear the DTC from the ECM using a diagnostic scan tool and perform a test drive to ensure the issue has been resolved.
  5. If the problem persists, further diagnostics may be necessary to identify any underlying wiring or ECM issues that could be causing the fault.

Cost to Fix P2128 2012 Nissan Pathfinder

The typical repair costs for addressing a P2128 code on a 2012 Nissan Pathfinder can vary depending on the specific cause of the issue. In general, replacing the accelerator pedal position sensor and addressing any related wiring or connector problems can range from $150 to $400 in parts and labor. It's important to note that diagnostic time and labor rates at auto repair shops can vary, so it's advisable to obtain quotes from multiple sources to get a more accurate estimate based on your location and vehicle specifics.

When is the Code Detected?

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

Need more information about the P2128 2012 Nissan Pathfinder code?

Need more information on how to fix the P2128 2012 Nissan Pathfinder code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P2128 2012 Nissan Pathfinder code diagnosed by a professional: Find a repair shop in your area

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 2012 Nissan Pathfinder Code

1. What is OBDII code P2128 in a 2012 Nissan Pathfinder?

OBDII code P2128 indicates a fault in the accelerator pedal position sensor circuit.

2. What are common symptoms of OBDII code P2128 in a 2012 Nissan Pathfinder?

Common symptoms include reduced engine power, difficulty accelerating, and the vehicle going into "limp mode."

3. What are the possible causes of OBDII code P2128 in a 2012 Nissan Pathfinder?

Possible causes include a faulty accelerator pedal position sensor, damaged wiring or connectors in the sensor circuit, or issues with the engine control module.

4. How can I diagnose the issue causing OBDII code P2128 in my 2012 Nissan Pathfinder?

Diagnosing the issue typically involves using a scan tool to check for the specific error code, testing the accelerator pedal position sensor, inspecting the wiring and connectors, and checking the engine control module.

5. Can I continue driving my 2012 Nissan Pathfinder with OBDII code P2128?

It is not recommended to continue driving with OBDII code P2128, as it can lead to further damage to the vehicle and potentially unsafe driving conditions.

6. How can I repair OBDII code P2128 in my 2012 Nissan Pathfinder?

Repairing OBDII code P2128 may involve replacing the accelerator pedal position sensor, repairing or replacing damaged wiring or connectors, or reprogramming the engine control module.

7. Can I fix OBDII code P2128 in my 2012 Nissan Pathfinder myself?

While some DIY enthusiasts may be able to diagnose and fix the issue causing OBDII code P2128, it is recommended to seek professional help for an accurate diagnosis and proper repair.

8. Are there any preventive measures to avoid OBDII code P2128 in a 2012 Nissan Pathfinder?

Regular maintenance checks, such as inspecting the accelerator pedal position sensor and related components, can help prevent issues that may trigger OBDII code P2128.

9. Will resetting the OBDII code P2128 in my 2012 Nissan Pathfinder make it go away permanently?

Resetting the OBDII code may temporarily clear the error code, but if the underlying issue causing P2128 is not addressed, the code is likely to reappear.

10. How much does it typically cost to repair OBDII code P2128 in a 2012 Nissan Pathfinder?

The cost of repairing OBDII code P2128 can vary depending on the specific issue, parts needed, and labor costs, but it is recommended to consult with a mechanic for an accurate estimate.

Discuss the causes and fixes for P2128 2012 Nissan Pathfinder OBDII Code

Submit a New Comment

Code P2128 2012 Nissan Pathfinder comments

No comments found for this page.