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Engine-Codes – Nissan – P0122 2005 Nissan Altima Sedan

P0122 2005 Nissan Altima Sedan Code - Throttle Position Sensor/Switch '1' Circuit Low Input

Quick Answer

The P0122 diagnostic trouble code (DTC) for a 2005 Nissan Altima Sedan indicates a problem with the Throttle Position Sensor/Switch '1' Circuit Low Input. Common causes include Faulty throttle position sensor, Damaged wiring or connectors in the TPS circuit, Malfunctioning engine control module (ECM). 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
P0122 2005 Nissan Altima Sedan indicates Throttle Position Sensor/Switch '1' Circuit Low Input.
Common causes
Common causes include Faulty throttle position sensor, Damaged wiring or connectors in the TPS circuit, Malfunctioning engine control module (ECM).
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 15, 2024
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Code P0122 2005 Nissan Altima Sedan Description

The P0122 diagnostic trouble code (DTC) for a 2005 Nissan Altima Sedan indicates a problem with the Throttle Position Sensor/Switch '1' Circuit Low 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 valve and sends this information to the engine control module (ECM). The ECM uses this data to determine the appropriate fuel delivery and ignition timing for optimal engine performance.

OBDII Code P0122 2005 Nissan Altima Sedan - Throttle Position Sensor/Switch '1' Circuit Low Input
P0122 2005 Nissan Altima Sedan Code - Throttle Position Sensor/Switch '1' Circuit Low Input

Common Causes of P0122 2005 Nissan Altima Sedan

  1. Faulty throttle position sensor.
  2. Damaged wiring or connectors in the TPS circuit.
  3. Malfunctioning engine control module (ECM).
  4. Mechanical issue with the throttle body.
  5. Corrosion or contamination in the TPS circuit.

Symptoms of P0122 2005 Nissan Altima Sedan

  1. Poor acceleration or hesitation when pressing the gas pedal.
  2. Rough idling or stalling at idle.
  3. Reduced fuel efficiency.
  4. Check Engine Light illuminated on the dashboard.
  5. Limp mode activation, limiting speed and power output.

How to Fix P0122 2005 Nissan Altima Sedan

  1. Begin by diagnosing the root cause of the P0122 code using a scan tool to monitor TPS voltage readings.
  2. Inspect the TPS wiring and connectors for any damage or corrosion, repairing or replacing as needed.
  3. Test the TPS sensor itself for proper operation, replacing it if it fails to provide accurate voltage signals.
  4. Check the throttle body for any mechanical issues or carbon buildup, cleaning or replacing as necessary.
  5. Clear the DTC and perform a test drive to ensure the issue has been resolved.

Cost to Fix P0122 2005 Nissan Altima Sedan

The typical repair costs for addressing a P0122 code on a 2005 Nissan Altima Sedan can range from $100 to $300, depending on the specific cause of the issue and the cost of parts and labor. It's important to note that diagnosis time and labor rates at auto repair shops can vary, with hourly rates typically ranging between $80 and $150. Factors such as location, vehicle make and model, and engine type can also impact the overall repair costs. For a more accurate estimate, it's recommended to consult with local auto repair shops or dealerships.

When is the Code Detected?

An excessively low voltage from the Throttle Position Sensor (TPS) 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 P0122 2005 Nissan Altima Sedan Code

1. What are the common symptoms of OBDII code P0122 in a 2005 Nissan Altima Sedan?

The common symptoms of OBDII code P0122 in a 2005 Nissan Altima Sedan may include issues like poor acceleration, stalling, rough idling, and decreased fuel efficiency.

2. What can cause the OBDII code P0122 in a 2005 Nissan Altima Sedan?

The most common cause of OBDII code P0122 in a 2005 Nissan Altima Sedan is a malfunctioning throttle position sensor (TPS) or a faulty wiring connection to the sensor.

3. How can I diagnose the OBDII code P0122 in my 2005 Nissan Altima Sedan?

Diagnosing OBDII code P0122 in a 2005 Nissan Altima Sedan involves using an OBDII scanner to read the code, checking the throttle position sensor for proper voltage output, and inspecting the wiring for any damage or loose connections.

4. Can I drive my 2005 Nissan Altima Sedan with the OBDII code P0122?

It is not recommended to drive your 2005 Nissan Altima Sedan with OBDII code P0122 as it may lead to further damage to the engine and affect the vehicle's performance.

5. How do I repair the OBDII code P0122 in my 2005 Nissan Altima Sedan?

To repair OBDII code P0122 in a 2005 Nissan Altima Sedan, you may need to replace the throttle position sensor or repair any damaged wiring connections associated with the sensor.

6. Are there any DIY tips for fixing the OBDII code P0122 in my 2005 Nissan Altima Sedan?

While it is recommended to have a professional mechanic address OBDII code P0122, you can try cleaning the throttle body and sensor connectors to see if that resolves the issue before considering a replacement.

7. Can a faulty throttle position sensor cause other OBDII codes to trigger in a 2005 Nissan Altima Sedan?

Yes, a faulty throttle position sensor can cause other related OBDII codes to trigger, such as P0121 (Throttle/Pedal Position Sensor/Switch 'A' Circuit Range/Performance Problem).

8. How much does it typically cost to repair OBDII code P0122 in a 2005 Nissan Altima Sedan?

The cost to repair OBDII code P0122 in a 2005 Nissan Altima Sedan can vary depending on the extent of the issue, but it may range from $100 to $300 for parts and labor.

9. Is it possible to reset the OBDII code P0122 in a 2005 Nissan Altima Sedan without fixing the underlying issue?

Resetting the OBDII code P0122 without fixing the underlying issue will only temporarily clear the code, and it is likely to reappear once the problem persists.

10. How can I prevent OBDII code P0122 from occurring in my 2005 Nissan Altima Sedan in the future?

Regular maintenance, such as cleaning the throttle body and sensor connectors, checking for any signs of wear or damage in the wiring, and addressing any engine performance issues promptly, can help prevent OBDII code P0122 from occurring in the future.

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