AutoCodes – Nissan – P2128 2011 Nissan Pathfinder

P2128 2011 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 2011 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 1,811

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 2011 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 2011 Nissan Pathfinder - Accelerator Pedal Position Sensor Circuit - AutoCodes.com — P2128 2011 Nissan Pathfinder Code - Accelerator Pedal Position Sensor Circuit

What does this mean?

What are the Possible Causes of the DTC P2128 2011 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 2011 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 2011 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 2011 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 2011 Nissan Pathfinder Code

1. What are the common symptoms of OBDII code P2128 in a 2011 Nissan Pathfinder?

When the Accelerator Pedal Position Sensor Circuit triggers code P2128, you may experience issues like reduced engine power, unresponsive throttle, and the vehicle going into "limp mode."

2. What causes the OBDII code P2128 in a 2011 Nissan Pathfinder?

The most common causes of code P2128 in a 2011 Nissan Pathfinder include a faulty accelerator pedal position sensor, damaged wiring or connectors in the sensor circuit, or a malfunctioning Engine Control Module (ECM).

3. How can I diagnose the OBDII code P2128 in my 2011 Nissan Pathfinder?

Diagnosing code P2128 involves using a scan tool to check for the specific trouble code, testing the accelerator pedal position sensor for proper voltage output, and inspecting the related wiring and connectors for any damage or corrosion.

4. Can I still drive my 2011 Nissan Pathfinder with OBDII code P2128?

It is not recommended to drive your 2011 Nissan Pathfinder with code P2128 present, as it can lead to erratic throttle response and potentially unsafe driving conditions. It is best to address the issue promptly.

5. How can I repair OBDII code P2128 in my 2011 Nissan Pathfinder?

Repairing code P2128 may involve replacing the accelerator pedal position sensor, repairing damaged wiring or connectors, or reprogramming the Engine Control Module (ECM) to resolve the issue.

6. Is it safe to reset the OBDII code P2128 in my 2011 Nissan Pathfinder without fixing the underlying issue?

Resetting the code without addressing the root cause can temporarily clear the warning light, but the issue will likely reoccur. It's essential to diagnose and repair the problem to prevent further issues.

7. Will OBDII code P2128 cause permanent damage to my 2011 Nissan Pathfinder if left untreated?

Leaving code P2128 unaddressed can potentially cause further damage to engine components due to inconsistent throttle response and performance issues. It is recommended to address the problem promptly.

8. Can extreme weather conditions trigger OBDII code P2128 in a 2011 Nissan Pathfinder?

Extreme weather conditions such as excessive heat or moisture can sometimes affect the accelerator pedal position sensor or its circuit, leading to the triggering of code P2128 in a 2011 Nissan Pathfinder.

9. How much does it typically cost to repair OBDII code P2128 in a 2011 Nissan Pathfinder?

The cost of repairing code P2128 in a 2011 Nissan Pathfinder can vary depending on the specific cause of the issue. On average, the repair may range from $150 to $400, including parts and labor.

10. Can regular maintenance help prevent OBDII code P2128 in a 2011 Nissan Pathfinder?

Regular maintenance, including checking and cleaning connectors, inspecting wiring for damage, and replacing worn-out sensors, can help prevent issues like code P2128 in a 2011 Nissan Pathfinder.