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P2123 2007 Nissan Maxima Code - Accelerator Pedal Position Sensor Circuit Range/Performance

Quick Answer

The P2123 diagnostic trouble code for a 2007 Nissan Maxima refers to an issue with the Accelerator Pedal Position Sensor Circuit Range/Performance. Common causes include Faulty accelerator pedal position sensor, Wiring or connector issues in the accelerator pedal position sensor circuit, Corrosion or damage to the sensor or circuit components. 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 2007 Nissan Maxima indicates Accelerator Pedal Position Sensor Circuit Range/Performance.
Common causes
Common causes include Faulty accelerator pedal position sensor, Wiring or connector issues in the accelerator pedal position sensor circuit, Corrosion or damage to the sensor or circuit components.
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 2007 Nissan Maxima Description

The P2123 diagnostic trouble code for a 2007 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 crucial component that communicates the position of the accelerator pedal to the engine control module (ECM). This information is used by the ECM to determine the appropriate fuel delivery and ignition timing for optimal engine performance.

OBDII Code P2123 2007 Nissan Maxima - Accelerator Pedal Position Sensor Circuit Range/Performance
P2123 2007 Nissan Maxima Code - Accelerator Pedal Position Sensor Circuit Range/Performance

Common Causes of P2123 2007 Nissan Maxima

  1. Faulty accelerator pedal position sensor
  2. Wiring or connector issues in the accelerator pedal position sensor circuit
  3. Corrosion or damage to the sensor or circuit components
  4. ECM software or hardware issues
  5. Mechanical issues with the accelerator pedal assembly

Symptoms of P2123 2007 Nissan Maxima

  1. Hesitation or lack of response when pressing the accelerator pedal
  2. Rough idling or unstable engine performance
  3. Reduced engine power or acceleration
  4. Check Engine Light illuminated on the dashboard

How to Fix P2123 2007 Nissan Maxima

  1. Begin by diagnosing the issue using a diagnostic scanner to confirm the P2123 code and pinpoint the exact cause of the problem.
  2. Inspect the accelerator pedal position sensor, wiring, and connectors for any signs of damage, corrosion, or loose connections. Replace or repair any faulty components as needed.
  3. Test the accelerator pedal position sensor using a multimeter to ensure it is functioning within the specified range. Adjust or replace the sensor if necessary.
  4. Clear the trouble code from the ECM's memory using the diagnostic scanner and test drive the vehicle to verify that the issue has been resolved.
  5. If the problem persists, further diagnostic testing may be required to identify any underlying issues with the ECM or other related components.

Cost to Fix P2123 2007 Nissan Maxima

The typical repair costs for addressing a P2123 code on a 2007 Nissan Maxima can vary depending on the specific cause of the issue. In general, replacing a faulty accelerator pedal position sensor or repairing wiring/connectors may cost between $150 to $300 for parts and labor. However, if additional diagnostic testing or ECM reprogramming is needed, the total repair costs could range from $300 to $500 or more. It's important to note that labor rates at auto repair shops can vary, so it's advisable to check with local providers for a more accurate estimate based on your location and vehicle specifics.

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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 2007 Nissan Maxima Code

1. What are common symptoms of OBDII code P2123 on a 2007 Nissan Maxima?

- Common symptoms of code P2123 may include reduced engine power, hesitation or stalling when pressing the accelerator pedal, and the vehicle going into limp mode.

2. What does the OBDII code P2123 for a 2007 Nissan Maxima indicate?

- OBDII code P2123 indicates an issue with the accelerator pedal position sensor circuit, specifically relating to range/performance.

3. What are the possible causes of OBDII code P2123 on a 2007 Nissan Maxima?

- Possible causes of code P2123 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 OBDII code P2123 on my 2007 Nissan Maxima?

- Diagnosing code P2123 involves using a scan tool to retrieve the code, checking the sensor's wiring and connectors for damage, and testing the sensor's functionality.

5. Can I continue driving my 2007 Nissan Maxima with OBDII code P2123 present?

- It is not recommended to continue driving your vehicle with code P2123 present, as it can lead to performance issues and potential safety concerns.

6. How can I repair OBDII code P2123 on my 2007 Nissan Maxima?

- Repairing code P2123 may involve replacing the accelerator pedal position sensor, repairing damaged wiring or connectors, or reprogramming the engine control module.

7. Are there any DIY tips for fixing OBDII code P2123 on a 2007 Nissan Maxima?

- DIY tips for fixing code P2123 include checking the sensor's wiring for visible damage, ensuring connectors are securely attached, and following a service manual for proper repair procedures.

8. How much does it cost to fix OBDII code P2123 on a 2007 Nissan Maxima?

- The cost to fix code P2123 can vary depending on the root cause of the issue, but it may range from a couple of hundred dollars for parts and labor to more if additional components need replacement.

9. Can a mechanic reset the OBDII code P2123 on my 2007 Nissan Maxima without fixing the underlying issue?

- While a mechanic can clear the code, it is crucial to address the underlying issue causing code P2123 to prevent it from reoccurring and potentially causing further damage.

10. Will code P2123 on a 2007 Nissan Maxima cause the check engine light to illuminate?

- Yes, code P2123 triggering a fault in the accelerator pedal position sensor circuit will likely cause the check engine light to illuminate on the dashboard.

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