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P0122 2012 Nissan Pathfinder Code - Throttle Position Sensor/Switch '1' Circuit Low Input

Quick Answer

The P0122 diagnostic trouble code (DTC) for a 2012 Nissan Pathfinder indicates a problem with the Throttle Position Sensor/Switch '1' Circuit, specifically a low input signal. Common causes include Faulty throttle position sensor, Damaged or corroded wiring in the TPS circuit, Loose or poor connections at the TPS connector. 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 2012 Nissan Pathfinder indicates Throttle Position Sensor/Switch '1' Circuit Low Input.
Common causes
Common causes include Faulty throttle position sensor, Damaged or corroded wiring in the TPS circuit, Loose or poor connections at the TPS connector.
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 16, 2024
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Code P0122 2012 Nissan Pathfinder Description

The P0122 diagnostic trouble code (DTC) for a 2012 Nissan Pathfinder indicates a problem 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 fuel injection system, responsible for monitoring the position of the throttle valve and sending this information to the engine control module (ECM). The ECM uses this data to adjust fuel delivery and ignition timing, ensuring optimal engine performance and efficiency.

OBDII Code P0122 2012 Nissan Pathfinder - Throttle Position Sensor/Switch '1' Circuit Low Input
P0122 2012 Nissan Pathfinder Code - Throttle Position Sensor/Switch '1' Circuit Low Input

Common Causes of P0122 2012 Nissan Pathfinder

  1. Faulty throttle position sensor
  2. Damaged or corroded wiring in the TPS circuit
  3. Loose or poor connections at the TPS connector
  4. Issues with the ECM or related control modules
  5. Environmental factors such as moisture or debris affecting sensor operation

Symptoms of P0122 2012 Nissan Pathfinder

  1. Rough idling or unstable engine speed
  2. Lack of power or hesitation during acceleration
  3. Stalling or difficulty starting the engine
  4. Reduced fuel efficiency
  5. Illumination of the Check Engine Light

How to Fix P0122 2012 Nissan Pathfinder

  1. Begin by conducting a thorough inspection of the TPS and its wiring for any visible damage or corrosion.
  2. Test the TPS using a multimeter to check for proper voltage output and resistance within the specified range.
  3. If the TPS is faulty, replace it with a new, OEM-quality sensor.
  4. Clear the DTC using a scan tool and perform a test drive to ensure the issue has been resolved.
  5. If the problem persists, further diagnosis may be required to identify any underlying issues with the wiring or ECM.

Cost to Fix P0122 2012 Nissan Pathfinder

The typical repair costs for addressing a P0122 code on a 2012 Nissan Pathfinder can range from $100 to $300, depending on the specific cause of the issue and the cost of parts and labor. It's important to note that diagnosis time and labor rates can vary, so it's advisable to consult with a reputable auto repair shop for a more accurate estimate based on your location and vehicle specifics.

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 2012 Nissan Pathfinder Code

1. What are the common symptoms of OBDII code P0122 on a 2012 Nissan Pathfinder?

When the Throttle Position Sensor/Switch '1' Circuit registers a low input, you may experience issues such as poor acceleration, decreased engine performance, stalling, or even difficulty starting the vehicle.

2. What typically causes the OBDII code P0122 on a 2012 Nissan Pathfinder?

The most common cause of the P0122 code in a 2012 Nissan Pathfinder is a faulty throttle position sensor (TPS). Other potential causes include damaged wiring or connectors related to the TPS circuit.

3. How can I diagnose the Throttle Position Sensor/Switch '1' Circuit low input issue on my 2012 Nissan Pathfinder?

To diagnose the P0122 code, you can use a diagnostic scanner to read the code, visually inspect the TPS and its wiring for any visible damage, and test the TPS using a multimeter to check for proper voltage signals.

4. Is it safe to continue driving my 2012 Nissan Pathfinder with OBDII code P0122?

It is not recommended to continue driving your vehicle with the P0122 code present, as it can lead to further damage and potential safety hazards. It's best to address the issue promptly to avoid any severe consequences.

5. Can I repair the Throttle Position Sensor/Switch '1' Circuit low input issue on my 2012 Nissan Pathfinder myself?

While some DIY enthusiasts may be able to replace the TPS or repair wiring issues themselves, it is advisable to seek professional help, especially if you are not experienced with automotive repairs. This ensures the problem is fixed correctly.

6. How much does it typically cost to repair the OBDII code P0122 on a 2012 Nissan Pathfinder?

The cost of repairing the P0122 code can vary depending on the exact cause of the issue, the labor rates in your area, and whether you choose to go to a dealership or an independent mechanic. On average, expect to pay a few hundred dollars for parts and labor.

7. Will resetting the OBDII code P0122 on my 2012 Nissan Pathfinder make it go away permanently?

Simply resetting the code without addressing the underlying issue will not make it go away permanently. The problem causing the P0122 code needs to be diagnosed and fixed to prevent it from recurring.

8. Are there any preventive measures I can take to avoid the Throttle Position Sensor/Switch '1' Circuit low input issue on my 2012 Nissan Pathfinder?

Regular maintenance, such as keeping your vehicle's electrical system in good condition, checking for any signs of wear on the TPS and its wiring, and addressing any engine performance issues promptly, can help prevent the P0122 code from occurring.

9. Can extreme weather conditions affect the Throttle Position Sensor/Switch '1' Circuit on a 2012 Nissan Pathfinder?

Extreme weather conditions, especially in regions with high humidity or temperature fluctuations, can potentially impact the TPS and its circuit. Moisture or heat-related issues may lead to malfunctioning components, triggering the P0122 code.

10. How long does it typically take to repair the Throttle Position Sensor/Switch '1' Circuit low input issue on a 2012 Nissan Pathfinder?

The repair time for the P0122 code can vary depending on the exact cause of the problem, the availability of parts, and the workload of the mechanic. In general, it may take a few hours to a full day to diagnose and repair the issue.

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