Engine-Codes.com
Engine-Codes – Nissan – P2123 2004 Nissan Altima Sedan

P2123 2004 Nissan Altima Sedan Code - Accelerator Pedal Position Sensor Circuit Range/Performance

Quick Answer

The P2123 diagnostic trouble code for a 2004 Nissan Altima Sedan indicates a problem 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, Corrosion or poor connections in the sensor circuit. 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 2004 Nissan Altima Sedan 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, Corrosion or poor connections in the sensor circuit.
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
💬 Need more help? Ask Auto Expert for instant answers — it's free!
AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play

Code P2123 2004 Nissan Altima Sedan Description

The P2123 diagnostic trouble code for a 2004 Nissan Altima Sedan indicates a problem 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) to adjust fuel delivery and engine performance accordingly. When this sensor malfunctions or sends incorrect signals, it can lead to a variety of performance issues in the vehicle.

OBDII Code P2123 2004 Nissan Altima Sedan - Accelerator Pedal Position Sensor Circuit Range/Performance
P2123 2004 Nissan Altima Sedan Code - Accelerator Pedal Position Sensor Circuit Range/Performance

Common Causes of P2123 2004 Nissan Altima Sedan

  1. Faulty accelerator pedal position sensor
  2. Damaged wiring or connectors in the sensor circuit
  3. Corrosion or poor connections in the sensor circuit
  4. Issues with the ECM receiving incorrect signals
  5. Environmental factors such as moisture or debris affecting sensor performance

Symptoms of P2123 2004 Nissan Altima Sedan

  1. Erratic acceleration
  2. Poor fuel efficiency
  3. Hesitation or stalling during acceleration
  4. Vehicle going into limp mode
  5. Illumination of the Check Engine Light

How to Fix P2123 2004 Nissan Altima Sedan

  1. Begin by diagnosing the specific cause of the issue using a scan tool to read the fault codes and testing the accelerator pedal position sensor and related wiring.
  2. Replace the faulty accelerator pedal position sensor if it is determined to be the cause of the problem.
  3. Check and repair any damaged wiring or connectors in the sensor circuit.
  4. Clear the fault codes from the ECM and perform a test drive to ensure the issue has been resolved.
  5. If the problem persists, further diagnostics may be needed to identify any underlying issues with the ECM or other components.

Cost to Fix P2123 2004 Nissan Altima Sedan

The typical repair costs for addressing a P2123 code on a 2004 Nissan Altima Sedan can range from $150 to $300, including parts and labor. However, it is important to note that specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. Rates in metropolitan areas or at dealerships may be higher, while independent shops often charge less. It is advisable to check local rates for a more precise estimate before proceeding with the repair.

Need more information about the P2123 2004 Nissan Altima Sedan code?

Need more information on how to fix the P2123 2004 Nissan Altima Sedan code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P2123 2004 Nissan Altima Sedan code diagnosed by a professional: Find a repair shop in your area

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 2004 Nissan Altima Sedan Code

1. What are the common symptoms of OBDII code P2123 in a 2004 Nissan Altima Sedan?

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

2. What does the OBDII code P2123 for a 2004 Nissan Altima Sedan indicate?

- OBDII code P2123 indicates a problem with the Accelerator Pedal Position Sensor Circuit Range/Performance.

3. What are the possible causes of OBDII code P2123 in a 2004 Nissan Altima Sedan?

- The possible causes of P2123 include a faulty accelerator pedal position sensor, wiring issues, poor electrical connections, or a damaged sensor circuit.

4. How can I diagnose the OBDII code P2123 in my 2004 Nissan Altima Sedan?

- Diagnosis involves using an OBDII scanner to read the code, checking the accelerator pedal position sensor and its wiring for any visible damage, and testing the sensor's voltage and resistance.

5. Can I still drive my 2004 Nissan Altima Sedan with OBDII code P2123?

- It is not recommended to drive the vehicle with P2123 as it can lead to unsafe driving conditions and further damage to the vehicle.

6. How can I repair OBDII code P2123 in my 2004 Nissan Altima Sedan?

- Repairing P2123 may involve replacing the accelerator pedal position sensor, repairing or replacing damaged wiring, ensuring proper electrical connections, and clearing the fault code.

7. Is it possible to reset the OBDII code P2123 in a 2004 Nissan Altima Sedan?

- Yes, you can reset the code using an OBDII scanner after addressing the underlying issue causing the fault code.

8. Can a DIY enthusiast fix OBDII code P2123 in a 2004 Nissan Altima Sedan?

- Depending on the skill level and experience, a DIY enthusiast may be able to fix P2123 by following proper diagnostic and repair procedures.

9. How much does it cost to repair OBDII code P2123 in a 2004 Nissan Altima Sedan?

- The cost of repairing P2123 can vary based on the extent of the issue, parts needed, and labor rates, but it can range from $100 to $300 or more.

10. How long does it take to repair OBDII code P2123 in a 2004 Nissan Altima Sedan?

- The repair time for P2123 can vary depending on the exact cause of the issue and the available parts, but it typically takes a few hours to complete the repair.

Discuss the causes and fixes for P2123 2004 Nissan Altima Sedan OBDII Code

Submit a New Comment

Code P2123 2004 Nissan Altima Sedan comments

No comments found for this page.