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

Quick Answer

The OBD-II code P0123 indicates that the Engine Control Module (ECM) has detected a high voltage input from the throttle position sensor or throttle position switch '1'. Common causes include Worn out throttle position sensor, Contaminated throttle position sensor, Poor electrical connections. 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 Versa indicates Throttle Position Sensor/Switch '1' Circuit High Input.
Common causes
Common causes include Worn out throttle position sensor, Contaminated throttle position sensor, Poor electrical connections.
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 08, 2024
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Code P0123 2007 Nissan Versa Description

The OBD-II code P0123 indicates that the Engine Control Module (ECM) has detected a high voltage input from the throttle position sensor or throttle position switch '1'. The throttle position sensor (TPS) is a crucial component that monitors the position of the throttle valve and sends this information to the ECM. The ECM uses this data to determine the appropriate air-fuel mixture for combustion in the engine. When the ECM receives a high voltage signal from the TPS, it means that the throttle position is higher than expected, which can lead to various issues with the engine's performance.

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

Common Causes of P0123 2007 Nissan Versa

  1. Worn out throttle position sensor
  2. Contaminated throttle position sensor
  3. Poor electrical connections
  4. Damaged wiring
  5. ECM malfunction

Symptoms of P0123 2007 Nissan Versa

  1. Rough idling
  2. Poor acceleration
  3. Engine stalling
  4. Hesitation during acceleration
  5. Decreased fuel efficiency

How to Fix P0123 2007 Nissan Versa

  1. Diagnose the issue by using a scan tool to confirm the P0123 code and perform a visual inspection of the throttle position sensor and wiring.
  2. Replace the throttle position sensor if it is found to be faulty. The sensor is typically located on the throttle body and can be easily replaced with basic tools.
  3. Check and repair any damaged wiring or poor electrical connections between the sensor and the ECM.
  4. Clear the fault code from the ECM using the scan tool and perform a test drive to ensure that the issue has been resolved.

Cost to Fix P0123 2007 Nissan Versa

The cost of repairing a throttle position sensor issue can vary depending on the make and model of the vehicle, as well as the labor rates in your area. On average, replacing a throttle position sensor can cost between $100 and $250 for the part, with additional labor costs ranging from $80 to $150 per hour. In total, the repair for a P0123 code on a 2007 Nissan Versa could cost anywhere from $200 to $500, including parts and labor. It is recommended to consult with a local auto repair shop 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 Versa Code

1. What are the common symptoms of OBDII code P0123 on a 2007 Nissan Versa?

The common symptoms of code P0123 include issues with acceleration, rough idling, stalling, and potentially an illuminated Check Engine Light on the dashboard.

2. What does the Throttle Position Sensor/Switch '1' Circuit High Input mean?

The code P0123 indicates that the Engine Control Module (ECM) has detected a high voltage input from the throttle position sensor or switch, signaling a potential issue with the sensor's circuit.

3. What are the possible causes of OBDII code P0123 on a 2007 Nissan Versa?

Common causes of code P0123 on a 2007 Nissan Versa include a faulty throttle position sensor, damaged wiring or connectors in the sensor circuit, or a malfunctioning ECM.

4. How can I diagnose the Throttle Position Sensor/Switch '1' Circuit High Input issue?

To diagnose code P0123, you can use a scan tool to read the code, visually inspect the throttle position sensor and its wiring for any signs of damage, and conduct voltage testing on the sensor to determine if it is functioning correctly.

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

It is not recommended to drive your vehicle with code P0123 present, as it can lead to poor performance, reduced fuel efficiency, and potential safety hazards. It is best to address the issue promptly.

6. How can I repair OBDII code P0123 on my 2007 Nissan Versa?

Repairing code P0123 typically involves replacing the throttle position sensor if it is faulty, repairing any damaged wiring or connectors in the sensor circuit, and clearing the trouble code with a scan tool.

7. Is it possible to reset OBDII code P0123 without fixing the underlying issue?

While you can clear the trouble code with a scan tool, it is essential to address the root cause of code P0123 to prevent further issues and ensure proper functioning of the throttle position sensor.

8. Can a DIY enthusiast fix OBDII code P0123 on a 2007 Nissan Versa?

Depending on your skill level and access to tools, a DIY enthusiast may be able to replace the throttle position sensor or repair wiring issues causing code P0123. However, it is recommended to seek professional help if unsure.

9. How much does it cost to repair OBDII code P0123 on a 2007 Nissan Versa?

The cost of repairing code P0123 can vary depending on the cause of the issue, labor rates in your area, and whether you choose to go to a dealership or an independent mechanic. It is advisable to get a few quotes for comparison.

10. Are there any preventive measures to avoid OBDII code P0123 on a 2007 Nissan Versa?

To help prevent code P0123, regular maintenance of your vehicle, including checking the throttle position sensor for any signs of wear or damage, can help catch potential issues early and avoid more significant problems down the road.

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