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Engine-Codes – Nissan – P0123 2011 Nissan Pathfinder

P0123 2011 Nissan Pathfinder Code - Throttle Position Sensor/Switch '1' Circuit High Input

Quick Answer

The P0123 diagnostic trouble code (DTC) for a 2011 Nissan Pathfinder indicates an issue 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 contamination in the sensor or circuit. 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 2011 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 contamination in the sensor or circuit.
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 13, 2024
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Code P0123 2011 Nissan Pathfinder Description

The P0123 diagnostic trouble code (DTC) for a 2011 Nissan Pathfinder indicates an issue with the Throttle Position Sensor/Switch '1' Circuit High Input. The throttle position sensor (TPS) is a crucial component of the vehicle's electronic throttle control system, responsible for monitoring the position of the throttle pedal and sending this information to the engine control module (ECM). The ECM uses this data to adjust the air-fuel mixture and ignition timing for optimal engine performance.

OBDII Code P0123 2011 Nissan Pathfinder - Throttle Position Sensor/Switch '1' Circuit High Input
P0123 2011 Nissan Pathfinder Code - Throttle Position Sensor/Switch '1' Circuit High Input

Common Causes of P0123 2011 Nissan Pathfinder

  1. Faulty throttle position sensor
  2. Wiring or connector issues in the TPS circuit
  3. Corrosion or contamination in the sensor or circuit
  4. ECM software or hardware malfunction
  5. Throttle body issues

Symptoms of P0123 2011 Nissan Pathfinder

  1. Rough idling or stalling
  2. Reduced engine power or acceleration
  3. Poor fuel efficiency
  4. Check Engine Light illuminated
  5. Engine misfires

How to Fix P0123 2011 Nissan Pathfinder

  1. Begin by diagnosing the TPS using a scan tool to confirm the P0123 code and check for any other related codes.
  2. Inspect the TPS wiring and connectors for any signs of damage, corrosion, or loose connections. Repair or replace as necessary.
  3. Test the TPS voltage output using a multimeter to ensure it is within the manufacturer's specified range. Replace the TPS if it is out of range.
  4. Clear the DTC and reset the ECM to see if the code returns. Test drive the vehicle to confirm that the issue has been resolved.
  5. If the problem persists, further diagnosis may be needed to identify any underlying issues with the throttle body or ECM.

Cost to Fix P0123 2011 Nissan Pathfinder

The typical repair costs for addressing a P0123 code on a 2011 Nissan Pathfinder can vary depending on the specific cause of the issue. In general, replacing a faulty throttle position sensor can cost between $100 and $200 for the part, with additional labor costs ranging from $100 to $200. However, if the issue is related to wiring or ECM problems, the repair costs may be higher. It is advisable to consult with a qualified mechanic or auto repair shop for a more accurate estimate based on the specific diagnosis and repair needed. Keep in mind that labor rates can vary between different locations and types of repair facilities.

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 2011 Nissan Pathfinder Code

1. What are the common symptoms of OBDII code P0123 in a 2011 Nissan Pathfinder?

The common symptoms of OBDII code P0123 in a 2011 Nissan Pathfinder include issues with acceleration, poor fuel economy, and potential stalling or rough idling.

2. What does the OBDII code P0123 'Throttle Position Sensor/Switch '1' Circuit High Input' indicate in a 2011 Nissan Pathfinder?

The OBDII code P0123 indicates that there is a high input signal from the throttle position sensor or switch '1' circuit in a 2011 Nissan Pathfinder, suggesting a potential issue with the throttle position sensor.

3. What are the possible causes of OBDII code P0123 in a 2011 Nissan Pathfinder?

Possible causes of OBDII code P0123 in a 2011 Nissan Pathfinder include a faulty throttle position sensor, wiring issues, a malfunctioning throttle body, or a problem with the engine control module (ECM).

4. How can I diagnose the OBDII code P0123 in my 2011 Nissan Pathfinder?

To diagnose OBDII code P0123 in a 2011 Nissan Pathfinder, you can use an OBDII scanner to retrieve the trouble code, visually inspect the throttle position sensor and its wiring, and perform voltage tests to check for proper sensor operation.

5. Can I continue to drive my 2011 Nissan Pathfinder with OBDII code P0123?

It is not recommended to continue driving your 2011 Nissan Pathfinder with OBDII code P0123, as it can lead to potential performance issues and further damage to the vehicle. It is best to address the underlying problem as soon as possible.

6. How can I repair OBDII code P0123 in my 2011 Nissan Pathfinder?

Repairing OBDII code P0123 in a 2011 Nissan Pathfinder may involve replacing the throttle position sensor, repairing or replacing damaged wiring, cleaning the throttle body, or reprogramming the engine control module (ECM).

7. Is it possible to reset the OBDII code P0123 in a 2011 Nissan Pathfinder without fixing the underlying issue?

While you can clear the trouble code using an OBDII scanner, the code is likely to return if the underlying issue causing OBDII code P0123 in a 2011 Nissan Pathfinder is not addressed.

8. How much does it cost to fix OBDII code P0123 in a 2011 Nissan Pathfinder?

The cost of fixing OBDII code P0123 in a 2011 Nissan Pathfinder can vary depending on the cause of the issue, the labor rates of the repair shop, and the cost of parts needed for the repair. It is advisable to obtain quotes from different mechanics or service centers.

9. Can a DIY enthusiast repair OBDII code P0123 in a 2011 Nissan Pathfinder?

Depending on your skill level and access to tools, a DIY enthusiast may be able to repair OBDII code P0123 in a 2011 Nissan Pathfinder by following repair guides, watching tutorials, and having the necessary equipment and parts.

10. How often does OBDII code P0123 occur in a 2011 Nissan Pathfinder?

OBDII code P0123 can occur in a 2011 Nissan Pathfinder due to various factors such as age, mileage, and maintenance history. While it may not be a common code, it is essential to address it promptly to prevent further issues with the vehicle's performance.

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