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Engine-Codes – Nissan – P2128 2010 Nissan Altima Sedan

P2128 2010 Nissan Altima Sedan Code - Accelerator Pedal Position Sensor Circuit

Quick Answer

The P2128 diagnostic trouble code (DTC) indicates a problem with the accelerator pedal position sensor circuit in a 2010 Nissan Altima Sedan. Common causes include Faulty accelerator pedal position sensor, Damaged wiring or connectors in the sensor circuit, Issues with the ECM. 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 2010 Nissan Altima Sedan indicates Accelerator Pedal Position Sensor Circuit.
Common causes
Common causes include Faulty accelerator pedal position sensor, Damaged wiring or connectors in the sensor circuit, Issues with the ECM.
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
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Code P2128 2010 Nissan Altima Sedan Description

The P2128 diagnostic trouble code (DTC) indicates a problem with the accelerator pedal position sensor circuit in a 2010 Nissan Altima Sedan. This sensor is responsible for sending signals to the engine control module (ECM) regarding the position of the accelerator pedal. The ECM uses this information to determine the appropriate fuel delivery and ignition timing for optimal engine performance.

OBDII Code P2128 2010 Nissan Altima Sedan - Accelerator Pedal Position Sensor Circuit
P2128 2010 Nissan Altima Sedan Code - Accelerator Pedal Position Sensor Circuit

Common Causes of P2128 2010 Nissan Altima Sedan

  1. Faulty accelerator pedal position sensor
  2. Damaged wiring or connectors in the sensor circuit
  3. Issues with the ECM
  4. Corrosion or contamination in the sensor circuit
  5. Electrical issues such as short circuits or open circuits

Symptoms of P2128 2010 Nissan Altima Sedan

  1. Poor acceleration
  2. Hesitation or stalling when pressing the gas pedal
  3. Rough idling
  4. Decreased fuel efficiency
  5. Check engine light illuminated on the dashboard

How to Fix P2128 2010 Nissan Altima Sedan

  1. Begin by diagnosing the specific cause of the issue using a diagnostic scanner to retrieve the trouble codes and pinpoint the problem area.
  2. Inspect the accelerator pedal position sensor, wiring, and connectors for any visible damage or corrosion. Replace any faulty components as needed.
  3. Test the sensor circuit using a multimeter to ensure proper voltage and continuity.
  4. Clear the trouble codes from the ECM's memory and test drive the vehicle to verify that the issue has been resolved.
  5. If the problem persists, consult a professional mechanic for further diagnosis and repair.

Cost to Fix P2128 2010 Nissan Altima Sedan

The typical repair costs for addressing the P2128 code in a 2010 Nissan Altima Sedan can range from $150 to $400, including parts and labor. However, it's important to note that the specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. Rates in metropolitan areas or at dealerships may be higher, while independent shops often charge less. It's advisable to check local rates for a more precise estimate.

When is the Code Detected?

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

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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 2010 Nissan Altima Sedan Code

1. What are the common symptoms of OBDII code P2128 in a 2010 Nissan Altima Sedan?

The common symptoms of code P2128 in a 2010 Nissan Altima Sedan may include issues with acceleration, reduced engine power, and the vehicle going into limp mode.

2. What does OBDII code P2128 indicate in a 2010 Nissan Altima Sedan?

Code P2128 in a 2010 Nissan Altima Sedan indicates a problem with the Accelerator Pedal Position Sensor Circuit.

3. What are the possible causes of OBDII code P2128 in a 2010 Nissan Altima Sedan?

The possible causes of code P2128 in a 2010 Nissan Altima Sedan include a faulty accelerator pedal position sensor, wiring issues, or a problem with the throttle position sensor.

4. How can I diagnose the Accelerator Pedal Position Sensor Circuit issue causing OBDII code P2128 in my 2010 Nissan Altima Sedan?

To diagnose the issue, you can use an OBDII scanner to read the code, visually inspect the wiring and connectors, and test the accelerator pedal position sensor and throttle position sensor with a multimeter.

5. Is it safe to continue driving my 2010 Nissan Altima Sedan with OBDII code P2128 triggered?

It is not recommended to drive your 2010 Nissan Altima Sedan with code P2128 triggered as it can lead to further damage and unsafe driving conditions due to potential acceleration issues.

6. Can I repair OBDII code P2128 in my 2010 Nissan Altima Sedan myself?

Depending on your skill level, you may be able to repair code P2128 yourself by replacing the accelerator pedal position sensor, repairing any damaged wiring, or addressing issues with the throttle position sensor.

7. How much does it typically cost to repair OBDII code P2128 in a 2010 Nissan Altima Sedan?

The cost of repairing code P2128 in a 2010 Nissan Altima Sedan can vary depending on the exact cause of the issue, but it may range from $100 to $300 for parts and labor.

8. Will resetting the OBDII system clear code P2128 in my 2010 Nissan Altima Sedan?

Resetting the OBDII system may temporarily clear code P2128, but if the underlying issue with the Accelerator Pedal Position Sensor Circuit is not addressed, the code is likely to reappear.

9. How urgent is it to address OBDII code P2128 in a 2010 Nissan Altima Sedan?

It is important to address code P2128 promptly in a 2010 Nissan Altima Sedan to prevent potential safety hazards, further damage to the vehicle, and to ensure proper engine performance.

10. Can a malfunctioning accelerator pedal position sensor cause other issues in a 2010 Nissan Altima Sedan besides triggering code P2128?

Yes, a malfunctioning accelerator pedal position sensor can cause other issues in a 2010 Nissan Altima Sedan such as poor fuel efficiency, rough idling, and difficulty starting the vehicle.

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