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Engine-Codes – Nissan – P0123 2006 Nissan Altima Sedan

P0123 2006 Nissan Altima Sedan Code - Throttle Position Sensor/Switch '1' Circuit High Input

Quick Answer

The diagnostic trouble code P0123 in a 2006 Nissan Altima Sedan indicates a problem with the Throttle Position Sensor/Switch '1' Circuit High Input. Common causes include Faulty throttle position sensor, Wiring issues such as a short circuit or open circuit, Corrosion or poor connections in the TPS 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 2006 Nissan Altima Sedan indicates Throttle Position Sensor/Switch '1' Circuit High Input.
Common causes
Common causes include Faulty throttle position sensor, Wiring issues such as a short circuit or open circuit, Corrosion or poor connections in the TPS 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 11, 2024
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Code P0123 2006 Nissan Altima Sedan Description

The diagnostic trouble code P0123 in a 2006 Nissan Altima Sedan indicates a problem with the Throttle Position Sensor/Switch '1' Circuit High Input. The throttle position sensor (TPS) is a crucial component in the engine management system, as it monitors the position of the throttle valve and sends this information to the engine control module (ECM). This data is used by the ECM to calculate the appropriate air-fuel mixture for optimal engine performance.

OBDII Code P0123 2006 Nissan Altima Sedan - Throttle Position Sensor/Switch '1' Circuit High Input
P0123 2006 Nissan Altima Sedan Code - Throttle Position Sensor/Switch '1' Circuit High Input

Common Causes of P0123 2006 Nissan Altima Sedan

  1. Faulty throttle position sensor
  2. Wiring issues such as a short circuit or open circuit
  3. Corrosion or poor connections in the TPS circuit
  4. Issues with the ECM
  5. Mechanical issues affecting the throttle body

Symptoms of P0123 2006 Nissan Altima Sedan

  1. Reduced engine performance
  2. Poor fuel efficiency
  3. Rough idling
  4. Hesitation during acceleration
  5. Stalling

How to Fix P0123 2006 Nissan Altima Sedan

  1. Begin by verifying the P0123 code using a diagnostic scanner to confirm the issue.
  2. Inspect the throttle position sensor and its wiring for any visible damage or corrosion.
  3. Test the TPS using a multimeter to check for proper voltage output.
  4. If the TPS is faulty, replace it with a new sensor and ensure it is calibrated correctly.
  5. Clear the trouble code from the ECM and perform a test drive to confirm the issue has been resolved.

Cost to Fix P0123 2006 Nissan Altima Sedan

The cost of repairing a Throttle Position Sensor/Switch '1' Circuit High Input issue in a 2006 Nissan Altima Sedan can vary depending on the specific cause of the problem. Generally, replacing a faulty TPS can cost between $50 to $200 for the part, with additional labor costs ranging from $100 to $200. Overall, the total repair cost could range from $150 to $400. It's important to note that labor rates and part prices can vary based on the location of the repair shop, the vehicle's make and model, and the engine type. It's recommended to obtain quotes from multiple shops to ensure a competitive price.

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 2006 Nissan Altima Sedan Code

1. What are the common symptoms of OBDII code P0123 in a 2006 Nissan Altima Sedan?

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

2. What can cause the Throttle Position Sensor/Switch '1' Circuit High Input code P0123 in a 2006 Nissan Altima?

- The code P0123 can be caused by a faulty throttle position sensor, damaged wiring or connectors, a defective throttle body, or issues with the engine control module.

3. How can I diagnose the Throttle Position Sensor/Switch '1' Circuit High Input code P0123 in my 2006 Nissan Altima?

- Diagnosing the code may involve using a scan tool to retrieve the code, inspecting the throttle position sensor and its wiring, checking for voltage irregularities, and testing the sensor's resistance.

4. Can I still drive my 2006 Nissan Altima with the P0123 code active?

- It is not recommended to drive the vehicle with the P0123 code active, as it can lead to poor performance, potential stalling, and other safety hazards.

5. How can I repair the Throttle Position Sensor/Switch '1' Circuit High Input code P0123 in my 2006 Nissan Altima?

- Repair options may include replacing the throttle position sensor, repairing or replacing damaged wiring or connectors, cleaning the throttle body, or reprogramming the engine control module.

6. Can a dirty throttle body cause the P0123 code in a 2006 Nissan Altima Sedan?

- Yes, a dirty throttle body can cause erratic readings from the throttle position sensor, triggering the P0123 code. Regular maintenance and cleaning of the throttle body can help prevent this issue.

7. How much does it typically cost to repair the P0123 code in a 2006 Nissan Altima?

- The cost of repairing the P0123 code can vary depending on the exact cause of the issue. Replacement of the throttle position sensor or other components may range from $100 to $300 or more, including parts and labor.

8. Will resetting the OBDII code P0123 in my 2006 Nissan Altima make it go away permanently?

- Resetting the code may temporarily turn off the check engine light, but if the underlying issue causing the P0123 code is not addressed, the code is likely to return.

9. Is it safe to continue driving my 2006 Nissan Altima if the P0123 code comes and goes intermittently?

- It is not recommended to ignore intermittent occurrences of the P0123 code, as it indicates a problem that could potentially worsen over time and affect the vehicle's performance.

10. Can a DIY enthusiast with basic automotive knowledge repair the P0123 code in a 2006 Nissan Altima?

- Depending on the specific cause of the P0123 code, some DIY enthusiasts may be able to tackle the repair themselves, particularly if it involves tasks like replacing the throttle position sensor or cleaning the throttle body.

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