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Engine-Codes – Nissan – P2122 2009 Nissan Altima Sedan

P2122 2009 Nissan Altima Sedan Code - Accelerator Pedal Position Sensor Circuit Range/Performance

Quick Answer

The P2122 diagnostic trouble code (DTC) for a 2009 Nissan Altima Sedan refers to the Accelerator Pedal Position Sensor Circuit Range/Performance. Common causes include Faulty accelerator pedal position sensor, Wiring or connector issues in the accelerator pedal position sensor circuit, ECM software or hardware problems. 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
P2122 2009 Nissan Altima Sedan indicates Accelerator Pedal Position Sensor Circuit Range/Performance.
Common causes
Common causes include Faulty accelerator pedal position sensor, Wiring or connector issues in the accelerator pedal position sensor circuit, ECM software or hardware problems.
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 P2122 2009 Nissan Altima Sedan Description

The P2122 diagnostic trouble code (DTC) for a 2009 Nissan Altima Sedan refers to the Accelerator Pedal Position Sensor Circuit Range/Performance. This code indicates that the signal from the accelerator pedal position sensor (APPS) has fallen out of the expected range, affecting the performance of the vehicle. The APPS is a vital component of the electronic throttle control system, which communicates the driver's input to the engine control module (ECM) to adjust the throttle opening accordingly.

OBDII Code P2122 2009 Nissan Altima Sedan - Accelerator Pedal Position Sensor Circuit Range/Performance
P2122 2009 Nissan Altima Sedan Code - Accelerator Pedal Position Sensor Circuit Range/Performance

Common Causes of P2122 2009 Nissan Altima Sedan

  1. Faulty accelerator pedal position sensor
  2. Wiring or connector issues in the accelerator pedal position sensor circuit
  3. ECM software or hardware problems
  4. Throttle body issues
  5. Electronic throttle control system malfunctions

Symptoms of P2122 2009 Nissan Altima Sedan

  1. Check engine light illuminated
  2. Reduced acceleration
  3. Poor fuel efficiency
  4. Rough idling
  5. Stalling

How to Fix P2122 2009 Nissan Altima Sedan

  1. Diagnose the issue by using a scan tool to retrieve the trouble codes and checking the accelerator pedal position sensor's voltage readings.
  2. Inspect the wiring and connectors for any signs of damage or corrosion. Repair or replace as necessary.
  3. Test the accelerator pedal position sensor for proper operation and replace if faulty.
  4. Clear the trouble codes and reset the ECM to see if the issue has been resolved.
  5. Test drive the vehicle to ensure that the symptoms associated with the P2122 code have been eliminated.

Cost to Fix P2122 2009 Nissan Altima Sedan

The typical repair costs for addressing a P2122 code on a 2009 Nissan Altima Sedan can range from $150 to $400, depending on the specific cause of the issue and the cost of parts and labor in your area. It's important to note that diagnosis time and labor rates at auto repair shops can vary, so it's advisable to check with local shops for a more accurate estimate. Keep in mind that rates may be higher at dealerships or in metropolitan areas, while independent shops may offer more competitive pricing.

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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 P2122 2009 Nissan Altima Sedan Code

1. What are the common symptoms of OBDII code P2122 in a 2009 Nissan Altima Sedan?

The common symptoms include reduced engine power, hesitation or stalling when pressing the accelerator pedal, and the vehicle going into limp mode.

2. What does the OBDII code P2122 in a 2009 Nissan Altima Sedan indicate?

OBDII code P2122 indicates an issue with the Accelerator Pedal Position Sensor Circuit Range/Performance.

3. What are the possible causes of OBDII code P2122 in a 2009 Nissan Altima Sedan?

Possible causes include a faulty accelerator pedal position sensor, issues with the wiring or connectors in the sensor circuit, or a problem with the engine control module.

4. How can I diagnose the cause of OBDII code P2122 in my 2009 Nissan Altima Sedan?

Diagnosis typically involves checking the accelerator pedal position sensor for proper operation, inspecting the sensor wiring and connectors for damage or corrosion, and using a scan tool to evaluate sensor data.

5. Can I drive my 2009 Nissan Altima Sedan with OBDII code P2122?

It is not recommended to drive the vehicle with OBDII code P2122, as it can lead to unsafe driving conditions and potential engine damage. It is advised to address the issue promptly.

6. How can I repair OBDII code P2122 in my 2009 Nissan Altima Sedan?

Repair options include replacing the accelerator pedal position sensor if faulty, repairing any damaged wiring or connectors, and resetting the engine control module after making necessary repairs.

7. Can a DIY enthusiast fix OBDII code P2122 in a 2009 Nissan Altima Sedan?

While some DIY enthusiasts may have the skills to diagnose and repair OBDII code P2122, it is recommended to consult a professional mechanic for accurate diagnosis and proper repair to ensure the issue is resolved effectively.

8. Will resetting the check engine light clear OBDII code P2122 in a 2009 Nissan Altima Sedan?

Resetting the check engine light may temporarily clear the code, but if the underlying issue causing OBDII code P2122 is not addressed, the code is likely to reappear. It is important to diagnose and repair the root cause of the code.

9. How much does it cost to fix OBDII code P2122 in a 2009 Nissan Altima Sedan?

The cost of fixing OBDII code P2122 can vary depending on the cause of the issue, the parts needed for repair, and labor costs. It is recommended to obtain quotes from different mechanics or repair shops for an accurate estimate.

10. Is OBDII code P2122 a common issue in 2009 Nissan Altima Sedans?

While OBDII code P2122 is not extremely common in 2009 Nissan Altima Sedans, it can occur due to various factors like sensor wear or wiring issues. Regular maintenance and prompt repairs can help prevent this code from appearing.

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