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P0122 2011 Nissan Pathfinder Code - Throttle Position Sensor/Switch '1' Circuit Low Input

Quick Answer

The P0122 diagnostic trouble code (DTC) in a 2011 Nissan Pathfinder relates to the throttle position sensor (TPS) or switch circuit registering a low input signal. Common causes include Faulty throttle position sensor, Corroded or damaged wiring in the TPS circuit, Poor electrical connection to the TPS. 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 2011 Nissan Pathfinder indicates Throttle Position Sensor/Switch '1' Circuit Low Input.
Common causes
Common causes include Faulty throttle position sensor, Corroded or damaged wiring in the TPS circuit, Poor electrical connection to the TPS.
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 10, 2024
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Code P0122 2011 Nissan Pathfinder Description

The P0122 diagnostic trouble code (DTC) in a 2011 Nissan Pathfinder relates to the throttle position sensor (TPS) or switch circuit registering a low input signal. The TPS is a crucial component of the vehicle's electronic fuel injection system, responsible for measuring the angle of the throttle plate and transmitting this information to the engine control module (ECM). The ECM utilizes the data from the TPS to adjust fuel delivery and optimize engine performance.

OBDII Code P0122 2011 Nissan Pathfinder - Throttle Position Sensor/Switch '1' Circuit Low Input
P0122 2011 Nissan Pathfinder Code - Throttle Position Sensor/Switch '1' Circuit Low Input

Common Causes of P0122 2011 Nissan Pathfinder

  1. Faulty throttle position sensor
  2. Corroded or damaged wiring in the TPS circuit
  3. Poor electrical connection to the TPS
  4. ECM software issue or malfunction
  5. Environmental factors such as moisture or debris affecting the TPS

Symptoms of P0122 2011 Nissan Pathfinder

  1. Engine hesitation or surging
  2. Rough idling or stalling
  3. Lack of power or poor acceleration
  4. Illumination of the check engine light
  5. Reduced fuel efficiency

How to Fix P0122 2011 Nissan Pathfinder

  1. Begin by accessing the TPS, typically located on the throttle body of the engine.
  2. Inspect the wiring harness connected to the TPS for any signs of damage, corrosion, or loose connections.
  3. Test the TPS using a multimeter to check for proper voltage output at various throttle positions.
  4. If the TPS is faulty, replace it with a new, OEM-approved sensor.
  5. Clear the DTC using a scan tool and perform a test drive to ensure the code does not reappear.

Cost to Fix P0122 2011 Nissan Pathfinder

The cost of repairing a P0122 code in a 2011 Nissan Pathfinder can vary depending on the specific cause of the issue. A new throttle position sensor typically ranges from $50 to $150, and labor costs can add another $100 to $200 to the total repair bill. Overall, the total cost of addressing this problem may fall between $150 and $350, depending on the shop's labor rates and any additional diagnostic tests or parts needed. It is recommended to consult with a qualified mechanic or repair shop to obtain an accurate estimate based on the vehicle's specific circumstances.

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 2011 Nissan Pathfinder Code

1. What are the common symptoms of OBDII code P0122 in a 2011 Nissan Pathfinder?

The common symptoms of OBDII code P0122 include poor acceleration, stalling, rough idling, and the vehicle going into limp mode.

2. What does the OBDII code P0122 'Throttle Position Sensor/Switch '1' Circuit Low Input' indicate in a 2011 Nissan Pathfinder?

OBDII code P0122 in a 2011 Nissan Pathfinder indicates that there is a low input signal coming from the throttle position sensor or switch.

3. What are the possible causes of OBDII code P0122 in a 2011 Nissan Pathfinder?

Possible causes of OBDII code P0122 include a faulty throttle position sensor, damaged wiring or connectors, a corroded sensor connection, or issues with the throttle body.

4. How can I diagnose the OBDII code P0122 in my 2011 Nissan Pathfinder?

Diagnosing OBDII code P0122 involves checking the throttle position sensor's voltage using a multimeter, inspecting the sensor and its wiring for damage, and testing the throttle body for proper function.

5. Can I drive my 2011 Nissan Pathfinder with OBDII code P0122?

It is not recommended to drive your 2011 Nissan Pathfinder with OBDII code P0122, as the vehicle may experience performance issues that could potentially lead to further damage.

6. How can I repair OBDII code P0122 in my 2011 Nissan Pathfinder?

Repairing OBDII code P0122 typically involves replacing the throttle position sensor, repairing any damaged wiring or connectors, cleaning the sensor connection, or addressing any throttle body issues.

7. Is it possible to reset OBDII code P0122 in a 2011 Nissan Pathfinder without repairs?

While you can clear the code using an OBDII scanner, it is crucial to address the underlying issue causing OBDII code P0122 in your 2011 Nissan Pathfinder to prevent further problems.

8. How much does it cost to fix OBDII code P0122 in a 2011 Nissan Pathfinder?

The cost to fix OBDII code P0122 in a 2011 Nissan Pathfinder can vary depending on the specific cause of the issue, but it may range from around $100 to $300 for parts and labor.

9. Can a DIY enthusiast repair OBDII code P0122 in a 2011 Nissan Pathfinder?

With the proper tools, knowledge, and experience, a DIY enthusiast may be able to repair OBDII code P0122 in a 2011 Nissan Pathfinder by replacing the throttle position sensor or addressing wiring issues.

10. How long does it take to repair OBDII code P0122 in a 2011 Nissan Pathfinder?

The time required to repair OBDII code P0122 in a 2011 Nissan Pathfinder can vary depending on the specific cause and the repair process, but it may take anywhere from one to three hours to complete the repair.

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