AutoCodes – Nissan – P2123 2004 Nissan Maxima

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

Quick Answer

The Accelerator Pedal Position (APP) sensor is installed on the upper end of the accelerator pedal assembly. Common causes include Faulty Accelerator Pedal Position Sensor, Accelerator Pedal Position Sensor harness is open or shorted, Accelerator Pedal Position Sensor circuit poor electrical connection. 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 Maxima indicates Accelerator Pedal Position Sensor Circuit Range/Performance.
Common causes: Common causes include Faulty Accelerator Pedal Position Sensor, Accelerator Pedal Position Sensor harness is open or shorted, Accelerator Pedal Position Sensor circuit poor electrical connection.
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.

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Code Popularity 2,190

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jun 14, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P2123 2004 Nissan Maxima Description

The Accelerator Pedal Position (APP) sensor is installed on the upper end of the accelerator pedal assembly. The sensor detects the accelerator position and sends a signal to the Engine Control Module (ECM). Accelerator pedal position sensor has two sensors. These sensors are a kind of potentiometers which transform the accelerator pedal position into output voltage, and emit the voltage signal to the ECM. In addition, these sensors detect the opening and closing speed of the accelerator pedal and feed the voltage signals to the ECM. The ECM judges the current opening angle of the accelerator pedal from these signals and controls the throttle control motor based on these signals. Idle position of the accelerator pedal is determined by the ECM receiving the signal from the accelerator pedal position sensor. The ECM uses this signal for the engine operation such as fuel cut.

OBDII Code P2123 2004 Nissan Maxima - Accelerator Pedal Position Sensor Circuit Range/Performance - AutoCodes.com — P2123 2004 Nissan Maxima Code - Accelerator Pedal Position Sensor Circuit Range/Performance

What does this mean?

What are the Possible Causes of the DTC P2123 2004 Nissan Maxima?

Faulty Accelerator Pedal Position Sensor
Accelerator Pedal Position Sensor harness is open or shorted
Accelerator Pedal Position Sensor circuit poor electrical connection

How to Fix the DTC P2123 2004 Nissan Maxima?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P2123 2004 Nissan Maxima code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P2123 2004 Nissan Maxima code?

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

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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 Nissan Maxima Code

1. What are the common symptoms of OBDII code P2123 on a 2004 Nissan Maxima?

The common symptoms of OBDII code P2123 on a 2004 Nissan Maxima include issues with acceleration, reduced engine power, and the vehicle going into limp mode.

2. What is the main cause of OBDII code P2123 on a 2004 Nissan Maxima?

The main cause of OBDII code P2123 on a 2004 Nissan Maxima is a malfunction in the accelerator pedal position sensor circuit, which can be due to a faulty sensor, wiring issues, or a poor connection.

3. How can I diagnose the OBDII code P2123 on my 2004 Nissan Maxima?

Diagnosing OBDII code P2123 on a 2004 Nissan Maxima involves using an OBDII scanner to retrieve the code, inspecting the accelerator pedal position sensor and its wiring for any visible damage, and testing the sensor's operation using a multimeter.

4. Can I still drive my 2004 Nissan Maxima with OBDII code P2123?

It is not recommended to drive your 2004 Nissan Maxima with OBDII code P2123, as it can lead to issues with acceleration and engine performance, potentially causing unsafe driving conditions.

5. How can I repair OBDII code P2123 on my 2004 Nissan Maxima?

To repair OBDII code P2123 on a 2004 Nissan Maxima, you may need to replace the accelerator pedal position sensor, repair any damaged wiring, or address any loose connections in the sensor circuit.

6. Is it safe to reset the OBDII code P2123 on my 2004 Nissan Maxima?

While resetting the OBDII code P2123 on a 2004 Nissan Maxima may temporarily turn off the check engine light, it is important to address the underlying issue causing the code to prevent further damage to the vehicle.

7. How much does it cost to fix OBDII code P2123 on a 2004 Nissan Maxima?

The cost to fix OBDII code P2123 on a 2004 Nissan Maxima can vary depending on the specific cause of the issue, but it may involve replacing the accelerator pedal position sensor, which can range from $100 to $300 including parts and labor.

8. Can a DIY enthusiast repair OBDII code P2123 on a 2004 Nissan Maxima?

DIY enthusiasts with the necessary tools and mechanical skills may be able to repair OBDII code P2123 on a 2004 Nissan Maxima by following online guides or service manuals, but it is recommended to have the issue diagnosed by a professional first.

9. Will OBDII code P2123 affect the fuel efficiency of my 2004 Nissan Maxima?

OBDII code P2123 on a 2004 Nissan Maxima can potentially affect fuel efficiency due to issues with acceleration and engine performance, leading to poor fuel consumption.

10. How often does OBDII code P2123 occur in a 2004 Nissan Maxima?

OBDII code P2123 can occur in a 2004 Nissan Maxima due to various factors such as wear and tear on sensor components, electrical issues, or poor maintenance practices, but it is not a common occurrence in well-maintained vehicles.