AutoCodes – Nissan – P2128 2008 Nissan Sentra

P2128 2008 Nissan Sentra 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 2008 Nissan Sentra 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 1,981

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 2008 Nissan Sentra 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 2008 Nissan Sentra - Accelerator Pedal Position Sensor Circuit - AutoCodes.com — P2128 2008 Nissan Sentra Code - Accelerator Pedal Position Sensor Circuit

What does this mean?

What are the Possible Causes of the DTC P2128 2008 Nissan Sentra?

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 2008 Nissan Sentra?

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 2008 Nissan Sentra 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 2008 Nissan Sentra 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 2008 Nissan Sentra Code

1. What are the common symptoms of OBDII code P2128 on a 2008 Nissan Sentra?

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

2. What does the OBDII code P2128 indicate on a 2008 Nissan Sentra?

- This code indicates an issue with the accelerator pedal position sensor circuit.

3. What are the possible causes of OBDII code P2128 on a 2008 Nissan Sentra?

- Possible causes include a faulty accelerator pedal position sensor, damaged wiring or connectors in the circuit, or a problem with the engine control module.

4. How can I diagnose the cause of OBDII code P2128 on my 2008 Nissan Sentra?

- You can diagnose the issue by performing a visual inspection of the wiring and connectors, checking for any damage or corrosion. Additionally, using a multimeter to test the sensor's resistance and voltage output can help pinpoint the problem.

5. How can I repair OBDII code P2128 on my 2008 Nissan Sentra?

- Repair options include replacing the accelerator pedal position sensor, repairing or replacing damaged wiring or connectors, or reprogramming the engine control module if necessary.

6. Can I drive my 2008 Nissan Sentra with OBDII code P2128?

- It is not recommended to drive the vehicle with this code present, as it can lead to safety hazards and further damage to the engine.

7. How much does it cost to fix OBDII code P2128 on a 2008 Nissan Sentra?

- The cost of repairs can vary depending on the root cause of the issue, but replacing the accelerator pedal position sensor typically ranges from $100 to $200, while labor costs can add to the total.

8. Will resetting the OBDII code P2128 on my 2008 Nissan Sentra make it go away permanently?

- Resetting the code may temporarily clear the warning light, but if the underlying issue is not addressed, the code is likely to reappear once the problem persists.

9. Is OBDII code P2128 a common problem in 2008 Nissan Sentras?

- While it may not be as common as other issues, a faulty accelerator pedal position sensor circuit can occur in 2008 Nissan Sentras and should be addressed promptly to avoid further complications.

10. Can a DIY enthusiast repair OBDII code P2128 on a 2008 Nissan Sentra?

- Depending on the individual's technical skills and tools available, some DIY enthusiasts may be able to replace the accelerator pedal position sensor or repair the wiring themselves. However, professional diagnosis and repair are recommended for more complex issues.