AutoCodes – Nissan – P2123 2006 Nissan Altima Sedan

P2123 2006 Nissan Altima Sedan 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 2006 Nissan Altima Sedan 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 3,108
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jun 14, 2020
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Code P2123 2006 Nissan Altima Sedan 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 2006 Nissan Altima Sedan - Accelerator Pedal Position Sensor Circuit Range/Performance - AutoCodes.com
P2123 2006 Nissan Altima Sedan Code - Accelerator Pedal Position Sensor Circuit Range/Performance

What are the Possible Causes of the DTC P2123 2006 Nissan Altima Sedan?

  • 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 2006 Nissan Altima Sedan?

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 2006 Nissan Altima Sedan 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 2006 Nissan Altima Sedan code?

Need more information on how to fix the P2123 2006 Nissan Altima Sedan 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 2006 Nissan Altima Sedan Code

1. What are the common symptoms of OBDII code P2123 in a 2006 Nissan Altima Sedan?

- Common symptoms include a decrease in acceleration, stalling or hesitation when pressing the gas pedal, and the vehicle going into limp mode.

2. What does the OBDII code P2123 for a 2006 Nissan Altima Sedan indicate?

- The code P2123 indicates a potential issue with the accelerator pedal position sensor circuit range/performance.

3. What are the possible causes of OBDII code P2123 in a 2006 Nissan Altima Sedan?

- Potential causes 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 in my 2006 Nissan Altima Sedan?

- Diagnosis typically involves using an OBDII scanner to read the code, checking the wiring and connectors for any damage, and testing the accelerator pedal position sensor for proper function.

5. Can I still drive my 2006 Nissan Altima Sedan with the OBDII code P2123 present?

- It is not recommended to drive the vehicle with the code P2123 present, as it can lead to potential safety hazards and further damage to the vehicle.

6. How can I repair OBDII code P2123 in my 2006 Nissan Altima Sedan?

- Repairing the code typically involves replacing the faulty accelerator pedal position sensor, repairing any damaged wiring or connectors, and clearing the trouble code from the vehicle's ECU.

7. Is it necessary to reset the ECU after repairing OBDII code P2123 in a 2006 Nissan Altima Sedan?

- Yes, resetting the ECU after repairing the code will allow the vehicle to recalibrate and ensure that the issue has been resolved.

8. Can a DIY enthusiast fix OBDII code P2123 in a 2006 Nissan Altima Sedan?

- While some DIY enthusiasts may have the skills to diagnose and repair this code, it is recommended to consult a professional mechanic for accurate diagnosis and proper repair.

9. Are there any preventive measures to avoid OBDII code P2123 in a 2006 Nissan Altima Sedan?

- Regular maintenance, such as checking the accelerator pedal position sensor and its wiring, can help prevent issues that may trigger the code P2123.

10. How long does it typically take to repair OBDII code P2123 in a 2006 Nissan Altima Sedan?

- The repair time can vary depending on the exact cause of the code, but it may take anywhere from 1 to 3 hours to diagnose and fix the issue.

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