Engine-CodesNissan – P2123 2006 Nissan Maxima

P2123 2006 Nissan Maxima Code - Accelerator Pedal Position Sensor Circuit Range/Performance

Quick Answer

The P2123 diagnostic trouble code for a 2006 Nissan Maxima indicates 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, ECM malfunction. 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 2006 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, ECM malfunction.
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.
Table of contents Created and updated by William Orellana on Sep 17, 2024
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Code P2123 2006 Nissan Maxima Description

The P2123 diagnostic trouble code for a 2006 Nissan Maxima indicates an issue with the Accelerator Pedal Position Sensor Circuit Range/Performance. This sensor is responsible for monitoring the position of the accelerator pedal and sending this information to the engine control module (ECM). The ECM uses this data to adjust the air-fuel mixture and ignition timing to optimize engine performance.

OBDII Code P2123 2006 Nissan Maxima - Accelerator Pedal Position Sensor Circuit Range/Performance
P2123 2006 Nissan Maxima Code - Accelerator Pedal Position Sensor Circuit Range/Performance

Common Causes of P2123 2006 Nissan Maxima

  1. Faulty accelerator pedal position sensor
  2. Damaged wiring or connectors in the sensor circuit
  3. ECM malfunction
  4. Corrosion in the sensor circuit
  5. Electrical interference or short circuits

Symptoms of P2123 2006 Nissan Maxima

  1. Poor acceleration
  2. Hesitation or jerking during acceleration
  3. Reduced fuel efficiency
  4. Stalling
  5. Limp mode activation

How to Fix P2123 2006 Nissan Maxima

  1. Begin by diagnosing the issue using a scan tool to confirm the P2123 code and identify the specific cause.
  2. Inspect the accelerator pedal position sensor, wiring, and connectors for any visible damage or corrosion. Replace any damaged components.
  3. Test the sensor circuit using a multimeter to ensure proper voltage and continuity.
  4. If the sensor and circuit test within specifications, check the ECM for any faults or reprogram it if necessary.
  5. Clear the trouble code from the ECM's memory and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P2123 2006 Nissan Maxima

The typical repair costs for addressing a P2123 code on a 2006 Nissan Maxima can range from $200 to $500, depending on the specific cause of the issue and the cost of parts and labor. It's important to note that diagnosis time and labor rates at auto repair shops can vary, so it's advisable to check with local shops for a more accurate estimate. Additionally, rates may be higher at dealerships or in metropolitan areas, while independent shops may offer more affordable pricing.

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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 2006 Nissan Maxima Code

1. What are the common symptoms of OBDII code P2123 in a 2006 Nissan Maxima?

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

2. What does the OBDII code P2123 for a 2006 Nissan Maxima indicate?

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

3. What are the possible causes of OBDII code P2123 in a 2006 Nissan Maxima?

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

4. How can I diagnose the cause of OBDII code P2123 in my 2006 Nissan Maxima?

- Diagnose by conducting a visual inspection of the sensor and its connections, testing the sensor's voltage output, and checking for any damaged wiring or connectors.

5. Can I continue driving my 2006 Nissan Maxima with OBDII code P2123?

- It is not recommended to drive the vehicle with this code as it can lead to further damage or safety hazards, especially if the vehicle goes into "limp mode."

6. How can I repair OBDII code P2123 in my 2006 Nissan Maxima?

- Repair involves replacing the faulty accelerator pedal position sensor, repairing any damaged wiring or connectors, and clearing the error code with an OBDII scanner.

7. Is it necessary to reset the ECU after repairing OBDII code P2123 in a 2006 Nissan Maxima?

- Yes, resetting the Engine Control Unit (ECU) is recommended after making any repairs to ensure the code is cleared and the system relearns the new sensor data.

8. Will OBDII code P2123 in a 2006 Nissan Maxima affect fuel efficiency?

- Yes, issues with the accelerator pedal position sensor can impact fuel efficiency as the engine may not receive accurate input for proper fuel delivery.

9. Can a DIY enthusiast replace the accelerator pedal position sensor to fix OBDII code P2123 in a 2006 Nissan Maxima?

- Yes, replacing the sensor can be done by a DIY enthusiast with the necessary tools and knowledge, but proper care must be taken during the process.

10. How much can I expect to pay for parts and labor to repair OBDII code P2123 in a 2006 Nissan Maxima?

- Costs can vary, but typically you can expect to pay around $100 to $200 for the sensor and an additional $100 to $200 for labor at a mechanic's shop.

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