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Engine-Codes – Nissan – P0123 2012 Nissan Pathfinder

P0123 2012 Nissan Pathfinder Code - Throttle Position Sensor/Switch '1' Circuit High Input

Quick Answer

The P0123 diagnostic trouble code (DTC) for a 2012 Nissan Pathfinder indicates a problem with the Throttle Position Sensor/Switch '1' Circuit High Input. Common causes include Faulty throttle position sensor, Wiring or connector issues in the TPS circuit, Corrosion or damage to TPS wiring. 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
P0123 2012 Nissan Pathfinder indicates Throttle Position Sensor/Switch '1' Circuit High Input.
Common causes
Common causes include Faulty throttle position sensor, Wiring or connector issues in the TPS circuit, Corrosion or damage to TPS wiring.
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 Aug 19, 2024
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Code P0123 2012 Nissan Pathfinder Description

The P0123 diagnostic trouble code (DTC) for a 2012 Nissan Pathfinder indicates a problem with the Throttle Position Sensor/Switch '1' Circuit High Input. The throttle position sensor (TPS) is a crucial component of the vehicle's electronic fuel injection system, as it monitors the position of the throttle valve and sends 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 P0123 2012 Nissan Pathfinder - Throttle Position Sensor/Switch '1' Circuit High Input
P0123 2012 Nissan Pathfinder Code - Throttle Position Sensor/Switch '1' Circuit High Input

Common Causes of P0123 2012 Nissan Pathfinder

  1. Faulty throttle position sensor
  2. Wiring or connector issues in the TPS circuit
  3. Corrosion or damage to TPS wiring
  4. ECM software or hardware malfunction
  5. Mechanical issues affecting the throttle valve

Symptoms of P0123 2012 Nissan Pathfinder

  1. Loss of power or hesitation during acceleration
  2. Rough idling or stalling
  3. Decreased fuel efficiency
  4. Illumination of the Check Engine Light
  5. Inconsistent throttle response

How to Fix P0123 2012 Nissan Pathfinder

  1. Diagnose the issue by using a scan tool to retrieve the trouble codes and inspecting the TPS and related wiring for any visible damage.
  2. Test the throttle position sensor using a multimeter to verify if it is functioning within the specified voltage range.
  3. Replace the throttle position sensor if it is found to be faulty, ensuring proper alignment and connection.
  4. Repair or replace any damaged wiring or connectors in the TPS circuit.
  5. Clear the trouble codes and perform a test drive to confirm that the issue has been resolved.

Cost to Fix P0123 2012 Nissan Pathfinder

The cost of repairing a Throttle Position Sensor/Switch '1' Circuit High Input issue on a 2012 Nissan Pathfinder can vary depending on the exact cause of the problem and the cost of parts and labor. In general, the replacement of a throttle position sensor can range from $50 to $200, while the labor costs can add another $50 to $100. Overall, the total repair cost for this issue may fall between $100 to $300. It's recommended to obtain quotes from local auto repair shops to get a more accurate estimate based on your specific circumstances.

When is the Code Detected?

An excessively high voltage from the Throttle Position Sensor (TPS) '1' 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 P0123 2012 Nissan Pathfinder Code

1. What are the common symptoms of OBDII code P0123 on a 2012 Nissan Pathfinder?

- Common symptoms include issues with acceleration, lack of power, rough idling, and possible stalling of the vehicle.

2. What does the OBDII code P0123 indicate on a 2012 Nissan Pathfinder?

- The code P0123 indicates a problem with the Throttle Position Sensor/Switch '1' Circuit High Input.

3. What are the possible causes of OBDII code P0123 on a 2012 Nissan Pathfinder?

- The possible causes include a faulty throttle position sensor, damaged wiring or connectors, a malfunctioning electronic throttle control system, or a problem with the engine control module.

4. How can I diagnose the issue related to the Throttle Position Sensor/Switch '1' Circuit High Input on a 2012 Nissan Pathfinder?

- You can use an OBDII scanner to read the trouble code and further diagnose the issue by checking the throttle position sensor's wiring, connectors, and the sensor itself.

5. Can driving with OBDII code P0123 on a 2012 Nissan Pathfinder cause more damage to the vehicle?

- Continuing to drive with this code may lead to poor engine performance, reduced fuel efficiency, and potential damage to other engine components over time.

6. How can I repair OBDII code P0123 on a 2012 Nissan Pathfinder?

- Repair options include replacing the throttle position sensor, repairing or replacing damaged wiring or connectors, or addressing any issues with the electronic throttle control system.

7. Is it safe to continue driving my 2012 Nissan Pathfinder with OBDII code P0123 present?

- It is not recommended to continue driving with this code present, as it can affect the vehicle's performance and potentially lead to further damage.

8. Can I reset the OBDII code P0123 on my 2012 Nissan Pathfinder by disconnecting the battery?

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

9. How much does it typically cost to repair OBDII code P0123 on a 2012 Nissan Pathfinder?

- The cost of repair can vary depending on the exact cause of the issue, but it may involve parts and labor expenses ranging from $100 to $300 or more.

10. Are there any maintenance tips to prevent OBDII code P0123 from appearing on my 2012 Nissan Pathfinder in the future?

- Regularly inspecting and maintaining the throttle position sensor, wiring, and connectors, as well as following the manufacturer's recommended maintenance schedule, can help prevent this code from reoccurring.

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