AutoCodes – Nissan – P2128 2008 Nissan Pathfinder

P2128 2008 Nissan Pathfinder Code - Accelerator Pedal Position Sensor Circuit

Quick Answer

The Accelerator Pedal Position (APP) sensor is installed on the upper end of the accelerator pedal assembly. 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: P2128 2008 Nissan Pathfinder indicates Accelerator Pedal Position Sensor Circuit.
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.

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Code Popularity 1,996

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 Jun 14, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P2128 2008 Nissan Pathfinder Description

The Accelerator Pedal Position (APP) sensor is installed on the upper end of the accelerator pedal assembly. The sensor detects the accelerator position and sends a signal to the Engine Control Module (ECM). Accelerator pedal position sensor has two sensors. These sensors are a kind of potentiometers which transform the accelerator pedal position into an output voltage and emit the voltage signal to the ECM. In addition, these sensors detect the opening and closing speed of the accelerator pedal and feed the voltage signals to the ECM. The ECM judges the current opening angle of the accelerator pedal from these signals and controls the throttle control motor based on these signals. Idle position of the accelerator pedal is determined by the ECM receiving the signal from the accelerator pedal position sensor. The ECM uses this signal for the engine operation such as fuel cut.

OBDII Code P2128 2008 Nissan Pathfinder - Accelerator Pedal Position Sensor Circuit - AutoCodes.com — P2128 2008 Nissan Pathfinder Code - Accelerator Pedal Position Sensor Circuit

What does this mean?

What are the Possible Causes of the DTC P2128 2008 Nissan Pathfinder?

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)
Electric Throttle Control Actuator(Throttle Body)

How to Fix the DTC P2128 2008 Nissan Pathfinder?

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 2008 Nissan Pathfinder 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 2008 Nissan Pathfinder 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 2008 Nissan Pathfinder Code

1. What are the common symptoms of OBDII code P2128 in a 2008 Nissan Pathfinder?

The common symptoms of code P2128 include reduced engine power, hesitation or stalling when accelerating, and the illumination of the check engine light.

2. What does the OBDII code P2128 in a 2008 Nissan Pathfinder indicate?

Code P2128 indicates a fault in the accelerator pedal position sensor circuit, specifically referring to a high voltage condition detected in the sensor.

3. What are the possible causes of OBDII code P2128 in a 2008 Nissan Pathfinder?

Possible causes of code P2128 include a faulty accelerator pedal position sensor, damaged wiring or connectors in the sensor circuit, or a problem with the engine control module.

4. How can I diagnose the issue causing OBDII code P2128 in my 2008 Nissan Pathfinder?

Diagnosing code P2128 involves checking the accelerator pedal position sensor for proper operation, inspecting the sensor wiring and connectors for damage, and using a scan tool to analyze live sensor data.

5. Can I still drive my 2008 Nissan Pathfinder with OBDII code P2128?

It is not recommended to drive your vehicle with code P2128 as it can lead to potential safety hazards due to reduced engine power and possible stalling.

6. How can I repair OBDII code P2128 in my 2008 Nissan Pathfinder?

Repairing code P2128 typically involves replacing the faulty accelerator pedal position sensor, repairing any damaged wiring or connectors, and clearing the code with a scan tool.

7. Is it possible to reset OBDII code P2128 in a 2008 Nissan Pathfinder without repairs?

While you can clear the code temporarily by resetting the vehicle's computer, it is crucial to address the underlying issue causing the fault code to prevent it from reoccurring.

8. Can a DIY enthusiast fix OBDII code P2128 in a 2008 Nissan Pathfinder?

Depending on your level of mechanical expertise, you may be able to replace the accelerator pedal position sensor or repair the wiring yourself. However, proper diagnosis and repair are recommended for a lasting solution.

9. How much does it cost to fix OBDII code P2128 in a 2008 Nissan Pathfinder?

The cost of fixing code P2128 can vary depending on the specific cause of the issue, but it generally includes the price of a new accelerator pedal position sensor and any necessary labor charges.

10. Will OBDII code P2128 cause permanent damage to my 2008 Nissan Pathfinder if left unresolved?

Continued driving with code P2128 can potentially cause further damage to the engine or other components due to the issues with the accelerator pedal position sensor circuit. It is advisable to address the problem promptly.