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Engine-Codes – Nissan – P0122 2004 Nissan Altima Sedan

P0122 2004 Nissan Altima Sedan Code - Throttle Position Sensor/Switch '1' Circuit Low Input

Quick Answer

The code P0122 for a 2004 Nissan Altima Sedan indicates a problem with the Throttle Position Sensor (TPS) or its circuit. Common causes include Faulty Throttle Position Sensor, Wiring or connector issues in the TPS circuit, Corrosion or dirt buildup affecting TPS signal. 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 2004 Nissan Altima Sedan indicates Throttle Position Sensor/Switch '1' Circuit Low Input.
Common causes
Common causes include Faulty Throttle Position Sensor, Wiring or connector issues in the TPS circuit, Corrosion or dirt buildup affecting TPS signal.
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 Aug 18, 2024
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Code P0122 2004 Nissan Altima Sedan Description

The code P0122 for a 2004 Nissan Altima Sedan indicates a problem with the Throttle Position Sensor (TPS) or its circuit. The TPS is a sensor that monitors the position of the throttle valve and sends this information to the engine control module (ECM). A low input signal from the TPS can cause issues with the engine's performance, fuel efficiency, and overall drivability of the vehicle. This code suggests that the voltage signal from the TPS is lower than the expected range, potentially leading to incorrect fuel delivery and ignition timing. If not addressed, this issue can result in poor acceleration, stalling, rough idling, and even decreased fuel economy.

OBDII Code P0122 2004 Nissan Altima Sedan - Throttle Position Sensor/Switch '1' Circuit Low Input
P0122 2004 Nissan Altima Sedan Code - Throttle Position Sensor/Switch '1' Circuit Low Input

Common Causes of P0122 2004 Nissan Altima Sedan

  1. Faulty Throttle Position Sensor.
  2. Wiring or connector issues in the TPS circuit.
  3. Corrosion or dirt buildup affecting TPS signal.
  4. ECM malfunction or software issues.
  5. Mechanical issues with the throttle body.

Symptoms of P0122 2004 Nissan Altima Sedan

  1. Poor acceleration or lack of response when pressing the gas pedal.
  2. Engine stalling or rough idling.
  3. Check Engine Light (CEL) illuminated on the dashboard.
  4. Decreased fuel efficiency.
  5. Difficulty shifting gears in an automatic transmission.

How to Fix P0122 2004 Nissan Altima Sedan

  1. Diagnose the issue using a scan tool to confirm the P0122 code.
  2. Inspect the TPS wiring and connectors for any damage or corrosion.
  3. Test the TPS sensor for proper voltage readings and resistance.
  4. Replace the TPS sensor if found to be faulty.
  5. Clear the trouble codes and test drive the vehicle to ensure the issue is resolved.

Cost to Fix P0122 2004 Nissan Altima Sedan

The cost of repairing a Throttle Position Sensor/Switch '1' Circuit Low Input issue can vary depending on the extent of the problem and the specific parts needed. In general, replacing a TPS sensor for a 2004 Nissan Altima Sedan can range from $100 to $200 for the part itself. Labor costs can add another $100 to $200, bringing the total repair cost to approximately $200 to $400. Keep in mind that prices can differ based on location, shop rates, and whether OEM or aftermarket parts are used. It's recommended to seek quotes from local auto repair shops for a more accurate estimate.

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 2004 Nissan Altima Sedan Code

1. What are the common symptoms of OBDII code P0122 in a 2004 Nissan Altima Sedan?

The common symptoms of code P0122 in a 2004 Nissan Altima Sedan include poor acceleration, stalling, rough idling, and potential issues with the transmission shifting.

2. What does the OBDII code P0122 indicate in a 2004 Nissan Altima Sedan?

Code P0122 indicates a low input from the throttle position sensor or switch '1' circuit in the 2004 Nissan Altima Sedan, signaling a potential issue with the throttle position sensor.

3. What are the possible causes of OBDII code P0122 in a 2004 Nissan Altima Sedan?

Possible causes of code P0122 in a 2004 Nissan Altima Sedan include a faulty throttle position sensor, damaged wiring or connectors in the throttle position sensor circuit, or a problem with the engine control module (ECM).

4. How can I diagnose the OBDII code P0122 in my 2004 Nissan Altima Sedan?

Diagnosing code P0122 involves using an OBDII scanner to retrieve the code, checking the throttle position sensor's wiring and connectors for damage, and testing the sensor's voltage output using a multimeter.

5. Can I drive my 2004 Nissan Altima Sedan with OBDII code P0122?

It is not recommended to drive your 2004 Nissan Altima Sedan with OBDII code P0122, as it can lead to poor engine performance, potential stalling, and other safety hazards on the road.

6. How can I repair OBDII code P0122 in my 2004 Nissan Altima Sedan?

To repair code P0122, you may need to replace the throttle position sensor, repair damaged wiring or connectors in the sensor circuit, or reprogram the engine control module (ECM) if necessary.

7. Is it possible to reset OBDII code P0122 in a 2004 Nissan Altima Sedan?

While you can clear the code temporarily with an OBDII scanner, it is important to address the underlying issue causing code P0122 to prevent it from recurring in your 2004 Nissan Altima Sedan.

8. How much does it cost to fix OBDII code P0122 in a 2004 Nissan Altima Sedan?

The cost of fixing code P0122 in a 2004 Nissan Altima Sedan can vary depending on the root cause of the issue, but it may range from $100 to $300 for parts and labor.

9. Can a DIY enthusiast repair OBDII code P0122 in a 2004 Nissan Altima Sedan?

If you have experience working on automotive electrical systems, you may be able to replace the throttle position sensor or repair wiring issues causing code P0122 in your 2004 Nissan Altima Sedan as a DIY project.

10. How often does OBDII code P0122 occur in a 2004 Nissan Altima Sedan?

Code P0122 can occur intermittently or persistently in a 2004 Nissan Altima Sedan, depending on the severity of the issue with the throttle position sensor or circuit. Regular maintenance and prompt repairs can help prevent its recurrence.

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