AutoCodes – Nissan – P2128 2012 Nissan Pathfinder

P2128 2012 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 2012 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 1,878

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 2012 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 2012 Nissan Pathfinder - Accelerator Pedal Position Sensor Circuit - AutoCodes.com — P2128 2012 Nissan Pathfinder Code - Accelerator Pedal Position Sensor Circuit

What does this mean?

What are the Possible Causes of the DTC P2128 2012 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 2012 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 2012 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 2012 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 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.