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P2123 2004 Infiniti G35 Code - Accelerator Pedal Position Sensor Circuit Range/Performance

Quick Answer

The P2123 diagnostic trouble code (DTC) for a 2004 Infiniti G35 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, Corrosion or contamination in the sensor connections. 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 Infiniti G35 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 contamination in the sensor connections.
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 2004 Infiniti G35 Description

The P2123 diagnostic trouble code (DTC) for a 2004 Infiniti G35 relates to the Accelerator Pedal Position Sensor Circuit Range/Performance. This code indicates that there is an issue with the accelerator pedal position sensor, which is responsible for communicating the position of the accelerator pedal to the engine control module (ECM). The ECM uses this information to determine the appropriate fuel delivery and ignition timing for optimal engine performance.

OBDII Code P2123 2004 Infiniti G35 - Accelerator Pedal Position Sensor Circuit Range/Performance
P2123 2004 Infiniti G35 Code - Accelerator Pedal Position Sensor Circuit Range/Performance

Common Causes of P2123 2004 Infiniti G35

  1. Faulty accelerator pedal position sensor.
  2. Damaged wiring or connectors in the sensor circuit.
  3. Corrosion or contamination in the sensor connections.
  4. Issues with the ECM communication.

Symptoms of P2123 2004 Infiniti G35

  1. Hesitation or lack of response when pressing the accelerator pedal.
  2. Rough idling or uneven engine performance.
  3. Reduced power or acceleration.
  4. Illumination of the Check Engine Light.
  5. Vehicle going into limp mode.

How to Fix P2123 2004 Infiniti G35

  1. Begin by conducting a thorough inspection of the accelerator pedal position sensor and its wiring harness for any visible damage or corrosion.
  2. Use a multimeter to test the sensor's resistance and voltage output to determine if it is functioning within specifications.
  3. If the sensor is faulty, replace it with a new one following the manufacturer's guidelines.
  4. Check and repair any damaged wiring or connectors in the sensor circuit.
  5. Clear the DTC with a scan tool and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P2123 2004 Infiniti G35

The typical repair costs for addressing a P2123 code on a 2004 Infiniti G35 can range from $150 to $400, including parts and labor. However, it's 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's advisable to check local rates for a more precise estimate.

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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 2004 Infiniti G35 Code

1. What are the common symptoms of the OBDII code P2123 in a 2004 Infiniti G35?

- Common symptoms include reduced engine power, hesitation or stalling when accelerating, and the vehicle going into limp mode.

2. What could be causing the P2123 code to trigger in a 2004 Infiniti G35?

- The P2123 code is typically caused by a faulty accelerator pedal position sensor, damaged wiring or connectors related to the sensor, or a malfunction in the engine control module.

3. How can I diagnose the P2123 code in my 2004 Infiniti G35?

- Diagnosing the P2123 code involves using an OBDII scanner to read the code and then inspecting the accelerator pedal position sensor and its wiring for any signs of damage or malfunction.

4. Can I still drive my 2004 Infiniti G35 with the P2123 code present?

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

5. How can I repair the P2123 code in my 2004 Infiniti G35?

- Repairing the P2123 code typically involves replacing the accelerator pedal position sensor, repairing any damaged wiring or connectors, and clearing the code with an OBDII scanner.

6. Is it possible to reset the P2123 code in a 2004 Infiniti G35 without fixing the underlying issue?

- While you can clear the code temporarily with an OBDII scanner, it is important to address the underlying issue causing the P2123 code to prevent further problems.

7. Are there any DIY tips for fixing the P2123 code in a 2004 Infiniti G35?

- DIY tips include checking the sensor's wiring for damage, ensuring proper connections, and following a repair manual or online guides for step-by-step instructions.

8. How much does it typically cost to repair the P2123 code in a 2004 Infiniti G35 at a mechanic?

- The cost of repairing the P2123 code can vary depending on the extent of the issue, but it may range from $200 to $500 for parts and labor at a mechanic.

9. Will the P2123 code in a 2004 Infiniti G35 cause permanent damage if not addressed promptly?

- Ignoring the P2123 code can lead to further damage to the engine and other components, so it is best to address the issue promptly to prevent costly repairs down the line.

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