Engine-CodesNissan – P0122 2004 Nissan Maxima

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

Quick Answer

The P0122 diagnostic trouble code (DTC) for a 2004 Nissan Maxima indicates an issue with the Throttle Position Sensor/Switch '1' Circuit Low Input. Common causes include A faulty throttle position sensor, Damaged or corroded wiring/connectors in the TPS circuit, Issues with the 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 2004 Nissan Maxima indicates Throttle Position Sensor/Switch '1' Circuit Low Input.
Common causes
Common causes include A faulty throttle position sensor, Damaged or corroded wiring/connectors in the TPS circuit, Issues with the 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.
Table of contents Created and updated by William Orellana on Sep 15, 2024
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Code P0122 2004 Nissan Maxima Description

The P0122 diagnostic trouble code (DTC) for a 2004 Nissan Maxima indicates an issue with the Throttle Position Sensor/Switch '1' Circuit Low Input. The throttle position sensor (TPS) is a crucial component of the vehicle's electronic fuel injection system, responsible for monitoring the position of the throttle valve and sending this information to the engine control module (ECM). The ECM uses this data to adjust fuel delivery and ignition timing, ensuring optimal engine performance and efficiency.

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

Common Causes of P0122 2004 Nissan Maxima

  1. A faulty throttle position sensor.
  2. Damaged or corroded wiring/connectors in the TPS circuit.
  3. Issues with the ECM.
  4. Incorrect TPS calibration.
  5. Environmental factors such as moisture or debris affecting the TPS.

Symptoms of P0122 2004 Nissan Maxima

  1. Poor acceleration or hesitation when pressing the gas pedal.
  2. Rough idling or stalling at idle.
  3. Reduced fuel efficiency.
  4. Engine misfires or hesitation during acceleration.
  5. Illumination of the Check Engine Light on the dashboard.

How to Fix P0122 2004 Nissan Maxima

  1. Begin by conducting a thorough inspection of the throttle position sensor, wiring, and connectors for any visible damage or corrosion.
  2. Use a multimeter to test the TPS for proper voltage output and resistance values according to the manufacturer's specifications.
  3. If the TPS is found to be faulty, replace it with a new, OEM-quality sensor.
  4. Check and repair any damaged wiring or connectors in the TPS circuit.
  5. Clear the DTC with a scan tool and perform a test drive to ensure the issue has been resolved.

Cost to Fix P0122 2004 Nissan Maxima

The typical repair costs for addressing a P0122 code on a 2004 Nissan Maxima 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 significantly, so it's advisable to check with local shops for a more accurate estimate. Additionally, factors such as location, vehicle make and model, and engine type can also influence the overall repair costs.

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 Maxima Code

1. What does OBDII code P0122 for a 2004 Nissan Maxima indicate?

The code P0122 refers to an issue with the Throttle Position Sensor/Switch '1' Circuit, specifically a low input signal.

2. What are the common symptoms of a P0122 code in a 2004 Nissan Maxima?

Common symptoms include poor acceleration, stalling, rough idling, and difficulty maintaining a steady speed.

3. What are the possible causes of a P0122 code in a 2004 Nissan Maxima?

Potential causes include a faulty throttle position sensor, damaged wiring or connectors, a dirty throttle body, or a malfunctioning Engine Control Module (ECM).

4. How can I diagnose the source of a P0122 code in my 2004 Nissan Maxima?

Diagnosis typically involves using a multimeter to test the throttle position sensor, checking the wiring for any damage or loose connections, and inspecting the throttle body for dirt or debris.

5. Can I still drive my 2004 Nissan Maxima with a P0122 code?

It is not recommended to drive the vehicle with a P0122 code, as it can lead to further damage and potentially unsafe driving conditions.

6. How can I repair a P0122 code in my 2004 Nissan Maxima?

Repair options may include replacing the throttle position sensor, repairing damaged wiring, cleaning the throttle body, or reprogramming the ECM.

7. Is it possible to reset a P0122 code in a 2004 Nissan Maxima without repairs?

Clearing the code without addressing the underlying issue is not advised, as the problem will likely resurface and could cause more significant problems over time.

8. Can a DIY enthusiast fix a P0122 code in a 2004 Nissan Maxima?

Depending on your skill level and access to tools, some DIY enthusiasts may be able to address a P0122 code by following repair guides and tutorials.

9. How much does it typically cost to repair a P0122 code in a 2004 Nissan Maxima?

The cost of repairs can vary depending on the specific issue causing the code, but it may range from $100 for a simple sensor replacement to several hundred dollars for more extensive repairs.

10. How often does a P0122 code occur in a 2004 Nissan Maxima?

The occurrence of a P0122 code can vary depending on factors like vehicle maintenance and driving conditions, but it is a relatively common issue in older vehicles like the 2004 Nissan Maxima.

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