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Engine-Codes – Nissan – P0123 2007 Nissan Pathfinder

P0123 2007 Nissan Pathfinder Code - Throttle Position Sensor/Switch '1' Circuit High Input

Quick Answer

The P0123 code for a 2007 Nissan Pathfinder indicates a problem with the Throttle Position Sensor/Switch '1' Circuit High Input. Common causes include Worn-out throttle position sensor, Faulty wiring or connectors in the TPS circuit, Corrosion or damage to the TPS sensor. 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 2007 Nissan Pathfinder indicates Throttle Position Sensor/Switch '1' Circuit High Input.
Common causes
Common causes include Worn-out throttle position sensor, Faulty wiring or connectors in the TPS circuit, Corrosion or damage to the TPS sensor.
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 14, 2024
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Code P0123 2007 Nissan Pathfinder Description

The P0123 code for a 2007 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 control system, as it monitors the position of the throttle pedal and sends signals to the engine control unit (ECU) to adjust the air-fuel mixture for optimal performance. When the TPS reports a high input signal, it means that the voltage reading from the sensor is higher than the normal range, which can lead to various issues with the vehicle's performance.

OBDII Code P0123 2007 Nissan Pathfinder - Throttle Position Sensor/Switch '1' Circuit High Input
P0123 2007 Nissan Pathfinder Code - Throttle Position Sensor/Switch '1' Circuit High Input

Common Causes of P0123 2007 Nissan Pathfinder

  1. Worn-out throttle position sensor.
  2. Faulty wiring or connectors in the TPS circuit.
  3. Corrosion or damage to the TPS sensor.
  4. Issues with the ECU affecting the TPS signal.
  5. Environmental factors such as moisture or debris affecting the TPS.

Symptoms of P0123 2007 Nissan Pathfinder

  1. Check Engine Light illuminated on the dashboard.
  2. Reduced engine performance and acceleration.
  3. Rough idling or stalling when coming to a stop.
  4. Engine misfires or hesitation during acceleration.
  5. Difficulty maintaining a consistent speed while driving.

How to Fix P0123 2007 Nissan Pathfinder

  1. Begin by diagnosing the issue using a diagnostic scanner to confirm the P0123 code and identify the specific cause.
  2. Inspect the throttle position sensor and its wiring for any signs of damage, corrosion, or wear.
  3. Replace the throttle position sensor if it is found to be faulty, ensuring it is properly calibrated.
  4. Check and repair any damaged wiring or connectors in the TPS circuit to restore proper signal transmission.
  5. Clear the error code from the ECU and perform a test drive to ensure the issue has been resolved.

Cost to Fix P0123 2007 Nissan Pathfinder

The typical repair costs for addressing a P0123 code on a 2007 Nissan Pathfinder can range from $100 to $300, depending on the specific cause of the issue and the cost of parts and labor. This estimate includes the cost of a new throttle position sensor, any necessary wiring repairs, and the labor involved in diagnosing and fixing the problem. It is important to note that the actual cost may vary based on the location of the repair shop, the vehicle's make and model, and the extent of the repairs needed. Additionally, diagnostic time and labor rates at auto repair shops can vary, with rates typically ranging between $80 and $150 per hour. It is advisable to consult with a professional mechanic for 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 2007 Nissan Pathfinder Code

1. What are the common symptoms of OBDII code P0123 in a 2007 Nissan Pathfinder?

The common symptoms of OBDII code P0123 in a 2007 Nissan Pathfinder include issues with acceleration, poor fuel efficiency, rough idling, and potential stalling.

2. What does the OBDII code P0123 'Throttle Position Sensor/Switch '1' Circuit High Input' mean for a 2007 Nissan Pathfinder?

The code P0123 indicates that the Engine Control Module (ECM) has detected a high voltage signal from the throttle position sensor or switch '1', which monitors the position of the throttle.

3. What are the possible causes of OBDII code P0123 in a 2007 Nissan Pathfinder?

Possible causes of code P0123 in a 2007 Nissan Pathfinder include a faulty throttle position sensor, damaged wiring or connectors in the throttle position sensor circuit, or issues with the ECM itself.

4. How can I diagnose the OBDII code P0123 in my 2007 Nissan Pathfinder?

To diagnose code P0123, you can use an OBDII scanner to read the code and check the voltage output of the throttle position sensor using a multimeter. Inspect the wiring and connectors for any damage or corrosion.

5. Can I still drive my 2007 Nissan Pathfinder with OBDII code P0123?

It is not recommended to drive your 2007 Nissan Pathfinder with code P0123, as it can lead to poor engine performance and potential safety issues. It's best to address the issue promptly.

6. How can I repair OBDII code P0123 in a 2007 Nissan Pathfinder?

Repairing code P0123 may involve replacing the throttle position sensor, repairing any damaged wiring or connectors in the circuit, or resetting the ECM after making necessary repairs.

7. Will resetting the ECM clear OBDII code P0123 in my 2007 Nissan Pathfinder?

Resetting the ECM may temporarily clear the code, but if the underlying issue causing P0123 is not addressed, the code is likely to reappear. It's important to diagnose and repair the root cause.

8. Is it possible to prevent OBDII code P0123 in a 2007 Nissan Pathfinder?

To prevent code P0123, regular maintenance and inspections of the throttle position sensor and related components are essential. Addressing any issues promptly can help prevent this code from appearing.

9. Can a DIY enthusiast fix OBDII code P0123 in a 2007 Nissan Pathfinder?

If you have the necessary tools, knowledge, and experience working on automotive systems, you may be able to fix code P0123 yourself by following repair guides or consulting with a reputable source for assistance.

10. How much does it typically cost to repair OBDII code P0123 in a 2007 Nissan Pathfinder?

The cost of repairing code P0123 can vary depending on the root cause of the issue, the need for parts replacement, and labor costs. It's recommended to obtain quotes from reputable mechanics or service centers for an accurate estimate.

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