AutoCodes – Nissan – P2128 2010 Nissan Altima Sedan

P2128 2010 Nissan Altima Sedan 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 2010 Nissan Altima Sedan 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 3,030

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 2010 Nissan Altima Sedan 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 2010 Nissan Altima Sedan - Accelerator Pedal Position Sensor Circuit - AutoCodes.com — P2128 2010 Nissan Altima Sedan Code - Accelerator Pedal Position Sensor Circuit

What does this mean?

What are the Possible Causes of the DTC P2128 2010 Nissan Altima Sedan?

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 2010 Nissan Altima Sedan?

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 2010 Nissan Altima Sedan 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.

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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.