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

Quick Answer

The P0123 diagnostic trouble code for Nissan vehicles indicates a Throttle Position Sensor/Switch '1' Circuit High Input. Common causes include Faulty throttle position sensor, Corroded or damaged wiring/connectors in the throttle position sensor circuit, ECM malfunction. 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 Nissan indicates Throttle Position Sensor/Switch '1' Circuit High Input.

Common causes

Common causes include Faulty throttle position sensor, Corroded or damaged wiring/connectors in the throttle position sensor circuit, ECM malfunction.

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.

• Description
• Common Causes
• Symptoms
• How To Fix
• Cost to Fix
• FAQs
• Comments
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Common Causes of P0123 Nissan

Symptoms of P0123 Nissan

How to Fix P0123 Nissan

Cost to Fix P0123 Nissan

When is the Code Detected?

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Information for Specific Nissan Models

• P0123 2002 Nissan Altima Sedan — Throttle Position Sensor Circuit High Voltage
• P0123 2003 Nissan Altima Sedan — Throttle Position Sensor/Switch '1' Circuit High Input
• P0123 2004 Nissan Altima Sedan — Throttle Position Sensor/Switch '1' Circuit High Input
• P0123 2005 Nissan Altima Sedan — Throttle Position Sensor/Switch '1' Circuit High Input
• P0123 2006 Nissan Altima Sedan — Throttle Position Sensor/Switch '1' Circuit High Input
• P0123 2008 Nissan Altima Sedan — Throttle Position Sensor/Switch '1' Circuit High Input
• P0123 2009 Nissan Altima Sedan — Throttle Position Sensor/Switch '1' Circuit High Input
• P0123 2010 Nissan Altima Sedan — Throttle Position Sensor/Switch '1' Circuit High Input
• P0123 2011 Nissan Altima Sedan — Throttle Position Sensor/Switch '1' Circuit High Input
• P0123 2012 Nissan Altima Sedan — Throttle Position Sensor/Switch '1' Circuit High Input
• P0123 2004 Nissan Maxima — Throttle Position Sensor/Switch '1' Circuit High Input
• P0123 2005 Nissan Maxima — Throttle Position Sensor/Switch '1' Circuit High Input
• P0123 2006 Nissan Maxima — Throttle Position Sensor/Switch '1' Circuit High Input
• P0123 2007 Nissan Maxima — Throttle Position Sensor/Switch '1' Circuit High Input
• P0123 2008 Nissan Maxima — Throttle Position Sensor/Switch '1' Circuit High Input
• P0123 2005 Nissan Pathfinder — Throttle Position Sensor/Switch '1' Circuit High Input
• P0123 2006 Nissan Pathfinder — Throttle Position Sensor/Switch '1' Circuit High Input
• P0123 2007 Nissan Pathfinder — Throttle Position Sensor/Switch '1' Circuit High Input
• P0123 2008 Nissan Pathfinder — Throttle Position Sensor/Switch '1' Circuit High Input
• P0123 2009 Nissan Pathfinder — Throttle Position Sensor/Switch '1' Circuit High Input
• P0123 2010 Nissan Pathfinder — Throttle Position Sensor/Switch '1' Circuit High Input
• P0123 2011 Nissan Pathfinder — Throttle Position Sensor/Switch '1' Circuit High Input
• P0123 2012 Nissan Pathfinder — Throttle Position Sensor/Switch '1' Circuit High Input
• P0123 2008 Nissan Rogue — Throttle Position Sensor/Switch '1' Circuit High Input
• P0123 2009 Nissan Rogue — Throttle Position Sensor/Switch '1' Circuit High Input
• P0123 2010 Nissan Rogue — Throttle Position Sensor/Switch '1' Circuit High Input
• P0123 2011 Nissan Rogue — Throttle Position Sensor/Switch '1' Circuit High Input
• P0123 2012 Nissan Rogue — Throttle Position Sensor/Switch '1' Circuit High Input
• P0123 2013 Nissan Rogue — Throttle Position Sensor/Switch '1' Circuit High Input
• P0123 2002 Nissan Sentra — Throttle Position Sensor/Switch '1' Circuit High Input
• P0123 2003 Nissan Sentra — Throttle Position Sensor/Switch '1' Circuit High Input
• P0123 2004 Nissan Sentra — Throttle Position Sensor/Switch '1' Circuit High Input
• P0123 2005 Nissan Sentra — Throttle Position Sensor/Switch '1' Circuit High Input
• P0123 2006 Nissan Sentra — Throttle Position Sensor/Switch '1' Circuit High Input
• P0123 2007 Nissan Sentra — Throttle Position Sensor/Switch '1' Circuit High Input
• P0123 2008 Nissan Sentra — Throttle Position Sensor/Switch '1' Circuit High Input
• P0123 2009 Nissan Sentra — Throttle Position Sensor/Switch '1' Circuit High Input
• P0123 2010 Nissan Sentra — Throttle Position Sensor/Switch '1' Circuit High Input
• P0123 2011 Nissan Sentra — Throttle Position Sensor/Switch '1' Circuit High Input
• P0123 2012 Nissan Sentra — Throttle Position Sensor/Switch '1' Circuit High Input
• P0123 2007 Nissan Versa — Throttle Position Sensor/Switch '1' Circuit High Input
• P0123 2008 Nissan Versa — Throttle Position Sensor/Switch '1' Circuit High Input
• P0123 2009 Nissan Versa — Throttle Position Sensor/Switch '1' Circuit High Input
• P0123 2010 Nissan Versa — Throttle Position Sensor/Switch '1' Circuit High Input
• P0123 2011 Nissan Versa — Throttle Position Sensor/Switch '1' Circuit High Input
• P0123 2012 Nissan Versa — Throttle Position Sensor/Switch '1' Circuit High Input

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 Nissan Code

1. What are the common symptoms of OBDII code P0123 in a Nissan related to the Throttle Position Sensor/Switch '1' Circuit High Input?

- Common symptoms include issues with acceleration, stalling, poor fuel economy, and the vehicle going into "limp mode."

2. What are the possible causes of OBDII code P0123 in a Nissan?

- The most common causes include a faulty throttle position sensor, damaged wiring or connectors in the sensor circuit, or issues with the engine control module (ECM).

3. How can I diagnose the Throttle Position Sensor/Switch '1' Circuit High Input issue in my Nissan?

- You can use an OBDII scanner to read the trouble code and analyze the sensor's voltage output. Additionally, inspect the sensor's wiring and connectors for any signs of damage.

4. Can I continue driving my Nissan with OBDII code P0123 present?

- It is not recommended to continue driving with this code, as it can lead to further engine performance issues and potential safety hazards.

5. How can I repair OBDII code P0123 in my Nissan?

- The repair typically involves replacing the throttle position sensor, repairing any damaged wiring or connectors, and clearing the trouble code with an OBDII scanner.

6. Are there any DIY tips for fixing the Throttle Position Sensor/Switch '1' Circuit High Input issue in my Nissan?

- While some basic troubleshooting can be done, it is recommended to have a qualified mechanic diagnose and repair this issue to ensure proper functionality.

7. Will resetting the OBDII code P0123 in my Nissan make the issue go away permanently?

- Resetting the code may temporarily clear the warning light, but if the underlying issue is not addressed, the code is likely to reappear.

8. How long does it take to replace the throttle position sensor in a Nissan affected by OBDII code P0123?

- The replacement process usually takes around 1-2 hours, but it can vary depending on the model and accessibility of the sensor.

9. Can a dirty throttle body cause OBDII code P0123 in a Nissan?

- While a dirty throttle body can cause related issues, OBDII code P0123 specifically indicates a high input in the throttle position sensor circuit.

10. Is it necessary to recalibrate the throttle position sensor after replacing it to resolve OBDII code P0123 in a Nissan?

- In most cases, recalibration is not required after replacing the throttle position sensor. However, it is recommended to follow manufacturer guidelines for sensor replacement procedures.