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Engine-Codes – Nissan – P2122 2003 Nissan Altima Sedan

P2122 2003 Nissan Altima Sedan Code - Accelerator Pedal Position Sensor Circuit Range/Performance

Quick Answer

The P2122 diagnostic trouble code (DTC) for a 2003 Nissan Altima Sedan indicates a problem with the Accelerator Pedal Position Sensor Circuit Range/Performance. Common causes include A faulty accelerator pedal position sensor, Damaged or corroded wiring/connectors in the sensor circuit, Issues with the ECM or related control modules. 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 2003 Nissan Altima Sedan indicates Accelerator Pedal Position Sensor Circuit Range/Performance.
Common causes
Common causes include A faulty accelerator pedal position sensor, Damaged or corroded wiring/connectors in the sensor circuit, Issues with the ECM or related control modules.
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 2003 Nissan Altima Sedan Description

The P2122 diagnostic trouble code (DTC) for a 2003 Nissan Altima Sedan indicates a problem with the Accelerator Pedal Position Sensor Circuit Range/Performance. This code is triggered when the Engine Control Module (ECM) detects that the signal from the accelerator pedal position sensor is outside the expected range or is not performing within the specified parameters. The accelerator pedal position sensor is a crucial component that communicates the position of the accelerator pedal to the ECM, allowing it to adjust the engine's performance accordingly.

OBDII Code P2122 2003 Nissan Altima Sedan - Accelerator Pedal Position Sensor Circuit Range/Performance
P2122 2003 Nissan Altima Sedan Code - Accelerator Pedal Position Sensor Circuit Range/Performance

Common Causes of P2122 2003 Nissan Altima Sedan

  1. A faulty accelerator pedal position sensor.
  2. Damaged or corroded wiring/connectors in the sensor circuit.
  3. Issues with the ECM or related control modules.
  4. Environmental factors such as moisture or debris affecting sensor performance.
  5. Wear and tear over time leading to sensor degradation.

Symptoms of P2122 2003 Nissan Altima Sedan

  1. Reduced acceleration or lack of response when pressing the accelerator pedal.
  2. Engine hesitation or stalling during acceleration.
  3. Illumination of the Check Engine Light on the dashboard.
  4. Limp mode activation, limiting the vehicle's speed and performance.
  5. Rough idling or uneven engine performance.

How to Fix P2122 2003 Nissan Altima Sedan

  1. Begin by diagnosing the issue using a scan tool to retrieve the specific trouble code and identify the root cause of the problem.
  2. Inspect the accelerator pedal position sensor, wiring, and connectors for any visible damage or corrosion. Replace any faulty components as needed.
  3. Test the sensor's output voltage and resistance to ensure it is within the manufacturer's specifications.
  4. Clear the trouble code from the ECM's memory and perform a test drive to verify that the issue has been resolved.
  5. If the problem persists, further diagnostic testing may be required to identify any underlying issues with the ECM or related components.

Cost to Fix P2122 2003 Nissan Altima Sedan

The typical repair costs for addressing a P2122 code on a 2003 Nissan Altima Sedan can range from $150 to $400, depending on the specific cause of the issue and the cost of replacement parts. This estimate includes the cost of a new accelerator pedal position sensor, any necessary wiring repairs, and labor charges. It's important to note that the actual cost may vary based on factors such as the technician's hourly labor rate, the location of the repair shop, and any additional diagnostic testing required. It's recommended to obtain a detailed quote from a trusted auto repair shop to determine the exact cost for resolving this issue.

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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 2003 Nissan Altima Sedan Code

1. What are the common symptoms of OBDII code P2122 on a 2003 Nissan Altima Sedan?

- Common symptoms include issues with acceleration, reduced engine power, hesitation, and the vehicle going into "limp mode."

2. What causes the OBDII code P2122 on a 2003 Nissan Altima Sedan?

- The code P2122 usually indicates a problem with the accelerator pedal position sensor or its circuit, such as a faulty sensor, wiring issues, or a poor connection.

3. How can I diagnose the OBDII code P2122 on my 2003 Nissan Altima Sedan?

- Diagnosing the code involves checking the accelerator pedal sensor for proper operation, inspecting the wiring for any damage or loose connections, and using a scan tool to monitor sensor readings.

4. Can a dirty throttle body cause the OBDII code P2122 on a 2003 Nissan Altima Sedan?

- While a dirty throttle body can affect engine performance, it is unlikely to directly trigger the P2122 code. Focus on checking the accelerator pedal position sensor and related components.

5. How can I repair the OBDII code P2122 on a 2003 Nissan Altima Sedan?

- Repair options may include replacing the accelerator pedal position sensor, repairing damaged wiring, ensuring proper sensor alignment, or addressing any connection issues.

6. Can I drive my 2003 Nissan Altima Sedan with the OBDII code P2122?

- It is not recommended to drive the vehicle with the P2122 code present, as it can lead to unsafe driving conditions and potential further damage to the vehicle.

7. Will disconnecting the battery reset the OBDII code P2122 on a 2003 Nissan Altima Sedan?

- Disconnecting the battery may clear the code temporarily, but it is essential to diagnose and address the underlying issue causing the code to prevent it from reoccurring.

8. How much does it typically cost to repair the OBDII code P2122 on a 2003 Nissan Altima Sedan?

- The cost of repair can vary depending on the exact cause of the P2122 code, but it may range from $100 to $300 or more, including parts and labor.

9. Can a DIY enthusiast fix the OBDII code P2122 on a 2003 Nissan Altima Sedan?

- Depending on your skill level and access to tools, DIY enthusiasts may be able to diagnose and repair the P2122 code by following service manuals and guides specific to the Nissan Altima Sedan.

10. Is it necessary to have the OBDII code P2122 on a 2003 Nissan Altima Sedan fixed immediately?

- It is essential to address the P2122 code promptly to prevent potential safety hazards, further damage to the vehicle, and to ensure optimal performance and fuel efficiency.

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