AutoCodes – Nissan – P2123 2008 Nissan Maxima

P2123 2008 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 2008 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 2,355

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 2008 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 2008 Nissan Maxima - Accelerator Pedal Position Sensor Circuit Range/Performance - AutoCodes.com — P2123 2008 Nissan Maxima Code - Accelerator Pedal Position Sensor Circuit Range/Performance

What does this mean?

What are the Possible Causes of the DTC P2123 2008 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 2008 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 2008 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 2008 Nissan Maxima code?

Need more information on how to fix the P2123 2008 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 2008 Nissan Maxima Code

1. What are the common symptoms of OBDII code P2123 on a 2008 Nissan Maxima?

The common symptoms of code P2123 include issues with acceleration, decreased engine power, and the vehicle going into limp mode.

2. What causes OBDII code P2123 on a 2008 Nissan Maxima?

Code P2123 is typically caused by a faulty accelerator pedal position sensor, damaged wiring or connectors related to the sensor, or issues with the electronic throttle control system.

3. How can I diagnose the cause of OBDII code P2123 on my 2008 Nissan Maxima?

To diagnose code P2123, you can use a diagnostic scanner to read the code and perform a visual inspection of the accelerator pedal position sensor and its wiring. Additionally, testing the sensor's voltage and signal can help pinpoint the issue.

4. Can I continue driving my 2008 Nissan Maxima with OBDII code P2123?

It is not recommended to drive your vehicle with code P2123 as it can lead to performance issues and potential safety hazards. It's best to address the problem promptly.

5. How can I repair OBDII code P2123 on my 2008 Nissan Maxima?

Repairing code P2123 may involve replacing the accelerator pedal position sensor, repairing or replacing damaged wiring or connectors, or addressing any issues with the electronic throttle control system.

6. Is it possible to reset OBDII code P2123 on a 2008 Nissan Maxima without fixing the underlying issue?

While clearing the code may temporarily turn off the check engine light, the underlying issue causing code P2123 will persist and may trigger the code again in the future. It's important to address the root cause of the problem.

7. Can a DIY enthusiast fix OBDII code P2123 on a 2008 Nissan Maxima?

Depending on your skill level and access to tools, a DIY enthusiast may be able to address code P2123 by replacing the accelerator pedal position sensor or repairing damaged wiring. However, if you're unsure, it's best to consult a professional mechanic.

8. Are there any preventative measures to avoid OBDII code P2123 on a 2008 Nissan Maxima?

Regularly maintaining your vehicle, checking for any signs of wear or damage to the accelerator pedal position sensor and its wiring, and addressing any performance issues promptly can help prevent code P2123 from occurring.

9. Will OBDII code P2123 on a 2008 Nissan Maxima affect fuel efficiency?

Code P2123 can potentially impact fuel efficiency due to issues with the accelerator pedal position sensor affecting engine performance. Resolving the code promptly can help maintain optimal fuel efficiency.

10. How long does it typically take to repair OBDII code P2123 on a 2008 Nissan Maxima?

The repair time for code P2123 can vary depending on the exact cause of the issue and the repair process involved. It's best to consult a mechanic for a more accurate estimate based on your specific situation.