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P2123 2008 Nissan Maxima Code - Accelerator Pedal Position Sensor Circuit Range/Performance

Quick Answer

The P2123 diagnostic trouble code (DTC) for a 2008 Nissan Maxima relates to the Accelerator Pedal Position Sensor Circuit Range/Performance. Common causes include Faulty accelerator pedal position sensor, Damaged wiring or connectors in the sensor circuit, Malfunctioning 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
P2123 2008 Nissan Maxima indicates Accelerator Pedal Position Sensor Circuit Range/Performance.
Common causes
Common causes include Faulty accelerator pedal position sensor, Damaged wiring or connectors in the sensor circuit, Malfunctioning 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 P2123 2008 Nissan Maxima Description

The P2123 diagnostic trouble code (DTC) for a 2008 Nissan Maxima relates to the Accelerator Pedal Position Sensor Circuit Range/Performance. This code indicates that there is a problem with the accelerator pedal position sensor, which is responsible for sending signals to the engine control module (ECM) regarding the position of the accelerator pedal. The ECM uses this information to adjust fuel delivery and ignition timing, ultimately affecting the vehicle's performance.

OBDII Code P2123 2008 Nissan Maxima - Accelerator Pedal Position Sensor Circuit Range/Performance
P2123 2008 Nissan Maxima Code - Accelerator Pedal Position Sensor Circuit Range/Performance

Common Causes of P2123 2008 Nissan Maxima

  1. Faulty accelerator pedal position sensor.
  2. Damaged wiring or connectors in the sensor circuit.
  3. Malfunctioning ECM.
  4. Corrosion or water damage in the sensor circuit.
  5. Wear and tear over time leading to sensor degradation.

Symptoms of P2123 2008 Nissan Maxima

  1. Poor acceleration or lack of response when pressing the accelerator pedal.
  2. Rough idling or stalling when coming to a stop.
  3. Hesitation or surging during acceleration.
  4. Engine going into limp mode, limiting performance.
  5. Check Engine Light illuminated on the dashboard.

How to Fix P2123 2008 Nissan Maxima

  1. Begin by conducting a thorough diagnostic scan to retrieve the specific trouble code and pinpoint the exact cause of the issue.
  2. Inspect the accelerator pedal position sensor and its wiring for any signs of damage or corrosion. Replace the sensor if necessary.
  3. Check the connectors in the sensor circuit for a secure connection and repair or replace any damaged connectors.
  4. Clear the trouble code from the ECM's memory and perform a test drive to ensure that the issue has been resolved.
  5. If the problem persists, further diagnosis may be required to identify any underlying issues with the ECM or other related components.

Cost to Fix P2123 2008 Nissan Maxima

The typical repair costs for addressing the P2123 code on a 2008 Nissan Maxima can range from $150 to $400, depending on the specific cause of the issue and the cost of parts and labor. It is important to note that diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. Most auto repair shops charge between $80 and $150 per hour for labor, with rates potentially higher in metropolitan areas or at dealerships, and lower at independent shops. It is advisable to check local rates for a more accurate estimate before proceeding with repairs.

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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 P2123 2008 Nissan Maxima Code

1. What are the common symptoms of OBDII code P2123 on a 2008 Nissan Maxima?

The common symptoms of code P2123 include issues with acceleration, decreased engine power, and the vehicle going into limp mode.

2. What causes OBDII code P2123 on a 2008 Nissan Maxima?

Code P2123 is typically caused by a faulty accelerator pedal position sensor, damaged wiring or connectors related to the sensor, or issues with the electronic throttle control system.

3. How can I diagnose the cause of OBDII code P2123 on my 2008 Nissan Maxima?

To diagnose code P2123, you can use a diagnostic scanner to read the code and perform a visual inspection of the accelerator pedal position sensor and its wiring. Additionally, testing the sensor's voltage and signal can help pinpoint the issue.

4. Can I continue driving my 2008 Nissan Maxima with OBDII code P2123?

It is not recommended to drive your vehicle with code P2123 as it can lead to performance issues and potential safety hazards. It's best to address the problem promptly.

5. How can I repair OBDII code P2123 on my 2008 Nissan Maxima?

Repairing code P2123 may involve replacing the accelerator pedal position sensor, repairing or replacing damaged wiring or connectors, or addressing any issues with the electronic throttle control system.

6. Is it possible to reset OBDII code P2123 on a 2008 Nissan Maxima without fixing the underlying issue?

While clearing the code may temporarily turn off the check engine light, the underlying issue causing code P2123 will persist and may trigger the code again in the future. It's important to address the root cause of the problem.

7. Can a DIY enthusiast fix OBDII code P2123 on a 2008 Nissan Maxima?

Depending on your skill level and access to tools, a DIY enthusiast may be able to address code P2123 by replacing the accelerator pedal position sensor or repairing damaged wiring. However, if you're unsure, it's best to consult a professional mechanic.

8. Are there any preventative measures to avoid OBDII code P2123 on a 2008 Nissan Maxima?

Regularly maintaining your vehicle, checking for any signs of wear or damage to the accelerator pedal position sensor and its wiring, and addressing any performance issues promptly can help prevent code P2123 from occurring.

9. Will OBDII code P2123 on a 2008 Nissan Maxima affect fuel efficiency?

Code P2123 can potentially impact fuel efficiency due to issues with the accelerator pedal position sensor affecting engine performance. Resolving the code promptly can help maintain optimal fuel efficiency.

10. How long does it typically take to repair OBDII code P2123 on a 2008 Nissan Maxima?

The repair time for code P2123 can vary depending on the exact cause of the issue and the repair process involved. It's best to consult a mechanic for a more accurate estimate based on your specific situation.

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