AutoCodes – Nissan – P2128 2005 Nissan Pathfinder

P2128 2005 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 2005 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 1,824

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 2005 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 2005 Nissan Pathfinder - Accelerator Pedal Position Sensor Circuit - AutoCodes.com — P2128 2005 Nissan Pathfinder Code - Accelerator Pedal Position Sensor Circuit

What does this mean?

What are the Possible Causes of the DTC P2128 2005 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 2005 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 2005 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 2005 Nissan Pathfinder code?

Need more information on how to fix the P2128 2005 Nissan Pathfinder code? Get Access to Factory Service Manuals

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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 2005 Nissan Pathfinder Code

1. What are the common symptoms of OBDII code P2128 on a 2005 Nissan Pathfinder?

- Common symptoms include reduced engine power, hesitation or stalling when accelerating, and the vehicle going into "limp mode."

2. What causes OBDII code P2128 on a 2005 Nissan Pathfinder?

- The most common cause of P2128 is a malfunctioning accelerator pedal position sensor or a faulty wiring connection in the sensor circuit.

3. How can I diagnose the issue causing OBDII code P2128 on my 2005 Nissan Pathfinder?

- Use a scan tool to check for the specific trouble code, inspect the accelerator pedal position sensor and its wiring for damage or corrosion, and test the sensor's voltage output.

4. Can I continue driving my 2005 Nissan Pathfinder with OBDII code P2128?

- It is not recommended to drive with P2128 as it can lead to unsafe driving conditions and potential further damage to the vehicle. Seek professional repair immediately.

5. Is it possible to reset OBDII code P2128 on a 2005 Nissan Pathfinder without fixing the underlying issue?

- While you can clear the code temporarily, it will likely reappear until the root cause, such as a faulty accelerator pedal position sensor, is properly addressed.

6. How much does it typically cost to repair OBDII code P2128 on a 2005 Nissan Pathfinder?

- The cost of repairs can vary depending on the exact cause of the code, but it may range from $200 to $500 for parts and labor.

7. Can I replace the accelerator pedal position sensor on my 2005 Nissan Pathfinder myself?

- If you have the necessary tools and experience working on vehicles, you can replace the sensor yourself. However, it's recommended to consult a professional if you're unsure.

8. Will cleaning the accelerator pedal position sensor fix OBDII code P2128 on a 2005 Nissan Pathfinder?

- Cleaning the sensor may help if the issue is caused by dirt or debris, but it's more likely that a malfunctioning sensor will need to be replaced.

9. How long does it take to repair OBDII code P2128 on a 2005 Nissan Pathfinder?

- Repair times can vary depending on the exact cause and complexity of the issue, but a professional repair shop can typically address the problem within a few hours to a day.

10. Are there any preventive measures I can take to avoid OBDII code P2128 on my 2005 Nissan Pathfinder in the future?

- Regularly inspecting and maintaining the accelerator pedal position sensor and its wiring connections can help prevent issues that lead to OBDII code P2128.