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Engine-Codes – Nissan – P0122 2005 Nissan Pathfinder

P0122 2005 Nissan Pathfinder Code - Throttle Position Sensor/Switch '1' Circuit Low Input

Quick Answer

The P0122 code on a 2005 Nissan Pathfinder indicates an issue with the Throttle Position Sensor/Switch '1' Circuit, specifically a low input signal. Common causes include Faulty Throttle Position Sensor, Damaged wiring or connectors in the TPS circuit, Corroded or dirty throttle body. 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
P0122 2005 Nissan Pathfinder indicates Throttle Position Sensor/Switch '1' Circuit Low Input.
Common causes
Common causes include Faulty Throttle Position Sensor, Damaged wiring or connectors in the TPS circuit, Corroded or dirty throttle body.
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 11, 2024
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Code P0122 2005 Nissan Pathfinder Description

The P0122 code on a 2005 Nissan Pathfinder indicates an issue with the Throttle Position Sensor/Switch '1' Circuit, specifically a low input signal. The Throttle Position Sensor (TPS) is a crucial component of the vehicle's electronic throttle control system, providing feedback to the engine control module (ECM) about the position of the throttle. This information is used by the ECM to adjust fuel delivery and ignition timing to optimize engine performance and efficiency.

OBDII Code P0122 2005 Nissan Pathfinder - Throttle Position Sensor/Switch '1' Circuit Low Input
P0122 2005 Nissan Pathfinder Code - Throttle Position Sensor/Switch '1' Circuit Low Input

Common Causes of P0122 2005 Nissan Pathfinder

  1. Faulty Throttle Position Sensor
  2. Damaged wiring or connectors in the TPS circuit
  3. Corroded or dirty throttle body
  4. Issues with the ECM
  5. Electrical interference or poor grounding in the circuit

Symptoms of P0122 2005 Nissan Pathfinder

  1. Rough idling or unstable engine performance
  2. Hesitation or lack of response during acceleration
  3. Poor fuel efficiency
  4. Engine stalling or difficulty starting
  5. Check Engine Light illuminated on the dashboard

How to Fix P0122 2005 Nissan Pathfinder

  1. Perform a diagnostic scan to confirm the P0122 code and identify the specific cause.
  2. Inspect the Throttle Position Sensor, wiring, and connectors for any visible damage or corrosion.
  3. Clean the throttle body and ensure proper connection to the TPS.
  4. Test the TPS using a multimeter to verify proper voltage output.
  5. Replace the Throttle Position Sensor if it is found to be faulty, and reset the ECM to clear the code.

Cost to Fix P0122 2005 Nissan Pathfinder

The cost of repairing a P0122 code on a 2005 Nissan Pathfinder can vary depending on the specific cause of the issue and the labor rates in your area. Generally, replacing a Throttle Position Sensor can cost between $100 to $200 for the part, with additional labor costs ranging from $100 to $200. Overall, you can expect to pay anywhere from $200 to $400 for parts and labor to resolve this issue. It's advisable to consult with a trusted mechanic or auto repair shop for a more accurate estimate based on your specific situation. Keep in mind that rates can vary based on location, vehicle make and model, and the extent of the repair needed.

When is the Code Detected?

An excessively low voltage from the Throttle Position Sensor (TPS) is sent to Engine Control Module (ECM).

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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 P0122 2005 Nissan Pathfinder Code

1. What are the common symptoms of OBDII code P0122 on a 2005 Nissan Pathfinder?

- Common symptoms include poor acceleration, stalling at idle, rough idling, and decreased fuel efficiency.

2. What does the OBDII code P0122 'Throttle Position Sensor/Switch '1' Circuit Low Input' mean?

- This code indicates that the throttle position sensor is sending a low voltage signal to the engine control module.

3. What are the possible causes of OBDII code P0122 on a 2005 Nissan Pathfinder?

- Possible causes include a faulty throttle position sensor, damaged wiring or connectors, a dirty throttle body, or a malfunctioning engine control module.

4. How can I diagnose the cause of OBDII code P0122 on my 2005 Nissan Pathfinder?

- You can use a multimeter to test the throttle position sensor's voltage output, visually inspect the wiring and connectors for damage, and clean the throttle body to see if it resolves the issue.

5. Can I drive my 2005 Nissan Pathfinder with OBDII code P0122?

- It is not recommended to drive the vehicle with this code as it can lead to further engine problems and potential safety issues.

6. Is it safe to continue driving if I reset the OBDII code P0122 on my 2005 Nissan Pathfinder?

- Resetting the code may temporarily clear the warning light, but if the underlying issue is not addressed, it is not safe to continue driving as the problem may reoccur.

7. How do I repair OBDII code P0122 on a 2005 Nissan Pathfinder?

- Repair options include replacing the throttle position sensor, repairing damaged wiring or connectors, cleaning the throttle body, or reprogramming the engine control module.

8. Will OBDII code P0122 on my 2005 Nissan Pathfinder cause the Check Engine light to illuminate?

- Yes, this code will trigger the Check Engine light to come on as a warning indicator of a potential issue with the throttle position sensor.

9. Can a DIY enthusiast fix OBDII code P0122 on a 2005 Nissan Pathfinder?

- Depending on their skill level, a DIY enthusiast may be able to address this code by following repair guides and using basic tools to replace the throttle position sensor or clean the throttle body.

10. How much does it cost to fix OBDII code P0122 on a 2005 Nissan Pathfinder at a repair shop?

- The cost of repair can vary depending on the specific cause of the code, but it typically ranges from $100 to $300 for parts and labor.

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