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P2123 2005 Nissan Maxima Code - Accelerator Pedal Position Sensor Circuit Range/Performance

Quick Answer

The P2123 diagnostic trouble code for a 2005 Nissan Maxima refers to an issue with 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 2005 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 15, 2024
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Code P2123 2005 Nissan Maxima Description

The P2123 diagnostic trouble code for a 2005 Nissan Maxima refers to an issue with the Accelerator Pedal Position Sensor Circuit Range/Performance. This code indicates that the signal from the accelerator pedal position sensor does not fall within the expected range, affecting the performance of the vehicle. The accelerator pedal position sensor is a vital component that communicates the position of the accelerator pedal to the Engine Control Module (ECM), allowing the ECM to adjust fuel delivery and engine timing accordingly.

OBDII Code P2123 2005 Nissan Maxima - Accelerator Pedal Position Sensor Circuit Range/Performance
P2123 2005 Nissan Maxima Code - Accelerator Pedal Position Sensor Circuit Range/Performance

Common Causes of P2123 2005 Nissan Maxima

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

Symptoms of P2123 2005 Nissan Maxima

  1. Hesitation or lack of response when pressing the accelerator pedal
  2. Reduced power output during acceleration
  3. Surging or erratic engine behavior
  4. Engine stalling or difficulty starting
  5. Vehicle going into limp mode

How to Fix P2123 2005 Nissan Maxima

  1. Diagnose the issue using a scan tool to retrieve the trouble code and perform a thorough inspection of the accelerator pedal position sensor and its circuit.
  2. Test the accelerator pedal position sensor using a multimeter to check for proper voltage and resistance values.
  3. Inspect the wiring and connectors in the sensor circuit for any damage, corrosion, or loose connections.
  4. Replace the accelerator pedal position sensor if it is found to be faulty, ensuring proper installation and calibration.
  5. Clear the trouble code from the ECM's memory and perform a road test to verify that the issue has been resolved.

Cost to Fix P2123 2005 Nissan Maxima

The typical repair costs for addressing the P2123 code on a 2005 Nissan Maxima can vary depending on the specific cause of the issue. In general, replacing the accelerator pedal position sensor and addressing any wiring or connector issues can range from $150 to $400 for parts and labor. It is important to note that diagnosis time and labor rates at auto repair shops can vary, with hourly rates typically ranging between $80 and $150. Rates may be higher at dealerships or in metropolitan areas, while independent shops may offer lower prices. For a more accurate estimate, it is recommended to inquire with local auto repair shops.

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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 2005 Nissan Maxima Code

1. What are the common symptoms of OBDII code P2123 on a 2005 Nissan Maxima?

- Common symptoms include poor acceleration, reduced engine power, stalling, and the vehicle going into limp mode.

2. What does the OBDII code P2123 on a 2005 Nissan Maxima mean?

- The code P2123 indicates an issue with the Accelerator Pedal Position Sensor Circuit Range/Performance.

3. What are the possible causes of OBDII code P2123 on a 2005 Nissan Maxima?

- Possible causes include a faulty accelerator pedal position sensor, wiring issues, poor electrical connections, or a problem with the engine control module.

4. How can I diagnose the OBDII code P2123 on my 2005 Nissan Maxima?

- Diagnosis involves using a scan tool to read the code, checking the wiring and connections to the accelerator pedal position sensor, and testing the sensor itself for proper operation.

5. Can I drive my 2005 Nissan Maxima with OBDII code P2123?

- It is not recommended to drive the vehicle with this code as it can lead to issues with acceleration and engine performance.

6. How can I repair OBDII code P2123 on my 2005 Nissan Maxima?

- Repair options include replacing the accelerator pedal position sensor, repairing any damaged wiring or connections, and resetting the engine control module.

7. Is it safe to reset the OBDII code P2123 on a 2005 Nissan Maxima?

- It is safe to reset the code after performing repairs to see if the issue has been resolved. However, if the problem persists, further diagnosis and repair are necessary.

8. How much does it cost to fix OBDII code P2123 on a 2005 Nissan Maxima?

- The cost of fixing this code can vary depending on the exact cause of the issue, but it typically involves the cost of parts and labor for sensor replacement or wiring repairs.

9. Can a DIY enthusiast repair OBDII code P2123 on a 2005 Nissan Maxima?

- If you have the necessary tools, knowledge, and experience working on automotive electrical systems, you may be able to repair this code yourself. Otherwise, it is recommended to seek professional help.

10. Will OBDII code P2123 on a 2005 Nissan Maxima cause permanent damage if left unfixed?

- Ignoring this code can potentially cause further damage to the engine or drivability issues, so it is best to address the problem promptly.

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