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Engine-Codes – Nissan – P2122 2005 Nissan Altima Sedan

P2122 2005 Nissan Altima Sedan Code - Accelerator Pedal Position Sensor Circuit Range/Performance

Quick Answer

The P2122 diagnostic trouble code for a 2005 Nissan Altima Sedan indicates an issue with the Accelerator Pedal Position Sensor Circuit Range/Performance. Common causes include Faulty accelerator pedal position sensor, Damaged wiring or connectors in the sensor circuit, Corrosion or contamination in the sensor connections. 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 2005 Nissan Altima Sedan indicates Accelerator Pedal Position Sensor Circuit Range/Performance.
Common causes
Common causes include Faulty accelerator pedal position sensor, Damaged wiring or connectors in the sensor circuit, Corrosion or contamination in the sensor connections.
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 2005 Nissan Altima Sedan Description

The P2122 diagnostic trouble code for a 2005 Nissan Altima Sedan indicates an issue with the Accelerator Pedal Position Sensor Circuit Range/Performance. This sensor is responsible for monitoring the position of the accelerator pedal and sending this information to the Engine Control Module (ECM). The ECM uses this data to determine the appropriate fuel delivery and ignition timing for optimal engine performance.

OBDII Code P2122 2005 Nissan Altima Sedan - Accelerator Pedal Position Sensor Circuit Range/Performance
P2122 2005 Nissan Altima Sedan Code - Accelerator Pedal Position Sensor Circuit Range/Performance

Common Causes of P2122 2005 Nissan Altima Sedan

  1. Faulty accelerator pedal position sensor
  2. Damaged wiring or connectors in the sensor circuit
  3. Corrosion or contamination in the sensor connections
  4. Malfunctioning Engine Control Module (ECM)
  5. Electrical issues such as a short circuit or open circuit in the sensor circuit

Symptoms of P2122 2005 Nissan Altima Sedan

  1. Reduced engine power
  2. Engine hesitation or surging
  3. Illuminated Check Engine Light
  4. Difficulty accelerating
  5. Engine stalling

How to Fix P2122 2005 Nissan Altima Sedan

  1. Diagnose the issue using a scan tool to retrieve the specific trouble code and perform a thorough inspection of the accelerator pedal position sensor and related components.
  2. Test the sensor's voltage and resistance to determine if it is functioning within the manufacturer's specifications.
  3. Check the wiring and connectors for any signs of damage, corrosion, or loose connections. Repair or replace as needed.
  4. Clear the trouble code from the ECM's memory and test drive the vehicle to ensure the issue has been resolved.
  5. If the problem persists, consider replacing the accelerator pedal position sensor or consulting a professional technician for further diagnosis and repair.

Cost to Fix P2122 2005 Nissan Altima Sedan

The typical repair costs for addressing the P2122 code on a 2005 Nissan Altima Sedan can vary depending on the specific cause of the issue. In general, replacing the accelerator pedal position sensor or repairing damaged wiring/connectors may cost between $150 to $300 for parts and labor. Additional diagnostic time and labor rates at auto repair shops can vary, with hourly rates typically ranging between $80 and $150. It is advisable to consult with a local auto repair shop for a more accurate estimate based on your location and vehicle's specific needs.

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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 2005 Nissan Altima Sedan Code

1. What are the common symptoms of OBDII code P2122 in a 2005 Nissan Altima Sedan?

- Common symptoms include reduced engine power, hesitation or stalling when accelerating, and the vehicle going into "limp mode."

2. What does the OBDII code P2122 indicate in a 2005 Nissan Altima Sedan?

- The code P2122 indicates a problem with the Accelerator Pedal Position Sensor Circuit Range/Performance.

3. What are the possible causes of OBDII code P2122 in a 2005 Nissan Altima Sedan?

- Possible causes include a faulty accelerator pedal position sensor, wiring or connector issues, or a problem with the engine control module (ECM).

4. How can I diagnose the OBDII code P2122 in my 2005 Nissan Altima Sedan?

- Diagnosing the code may involve checking the wiring and connectors for damage, testing the accelerator pedal position sensor, and scanning the ECM for related fault codes.

5. Can I still drive my 2005 Nissan Altima Sedan with the OBDII code P2122 present?

- It is not recommended to drive the vehicle with this code present, as it may lead to unsafe driving conditions and further damage to the engine.

6. How can I repair OBDII code P2122 in my 2005 Nissan Altima Sedan?

- Repairing the code may involve replacing the accelerator pedal position sensor, repairing any damaged wiring or connectors, or reprogramming the ECM.

7. Is it safe to reset the OBDII code P2122 in my 2005 Nissan Altima Sedan using an OBDII scanner?

- While you can reset the code using a scanner, it is crucial to address the underlying issue causing the code before continuing to drive the vehicle.

8. How much does it typically cost to repair OBDII code P2122 in a 2005 Nissan Altima Sedan?

- The cost of repairs can vary depending on the exact cause of the issue, but it may range from $200 to $500 for parts and labor.

9. Can a DIY enthusiast fix OBDII code P2122 in a 2005 Nissan Altima Sedan?

- Depending on the extent of the issue and your skill level, some DIY enthusiasts may be able to diagnose and repair the code themselves. However, it is recommended to consult a professional if unsure.

10. How long does it take to repair OBDII code P2122 in a 2005 Nissan Altima Sedan?

- The repair time can vary based on the exact cause of the issue and the availability of parts, but it typically takes a few hours to a full day to complete the repair.

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