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Engine-Codes – Infiniti – P0122 2004 Infiniti G35

P0122 2004 Infiniti G35 Code - Throttle Position Sensor/Switch '1' Circuit Low Input

Quick Answer

The P0122 code for a 2004 Infiniti G35 indicates a problem with the Throttle Position Sensor/Switch '1' Circuit, specifically a low input signal. Common causes include Faulty throttle position sensor, Damaged wiring or connectors in the TPS circuit, Corrosion or poor connection 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
P0122 2004 Infiniti G35 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, Corrosion or poor connection 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 13, 2024
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Code P0122 2004 Infiniti G35 Description

The P0122 code for a 2004 Infiniti G35 indicates a problem with the Throttle Position Sensor/Switch '1' Circuit, specifically a low input signal. 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 air-fuel mixture for combustion, ignition timing, and other engine functions.

OBDII Code P0122 2004 Infiniti G35 - Throttle Position Sensor/Switch '1' Circuit Low Input
P0122 2004 Infiniti G35 Code - Throttle Position Sensor/Switch '1' Circuit Low Input

Common Causes of P0122 2004 Infiniti G35

  1. Faulty throttle position sensor
  2. Damaged wiring or connectors in the TPS circuit
  3. Corrosion or poor connection in the TPS circuit
  4. Issues with the ECM
  5. Environmental factors such as moisture or debris affecting the TPS

Symptoms of P0122 2004 Infiniti G35

  1. Rough idling or stalling
  2. Hesitation or lack of response during acceleration
  3. Reduced fuel efficiency
  4. Check Engine Light illuminated on the dashboard

How to Fix P0122 2004 Infiniti G35

  1. Begin by diagnosing the issue using a scan tool to confirm the P0122 code and pinpoint the exact cause.
  2. Inspect the throttle position sensor for any visible damage or wear. Replace the TPS if necessary.
  3. Check the wiring and connectors in the TPS circuit for any signs of damage, corrosion, or poor connection. Repair or replace as needed.
  4. Clear the error code from the ECM using the scan tool and test drive the vehicle to ensure the issue has been resolved.
  5. If the problem persists, further diagnostics may be required to identify any underlying issues with the ECM or other components.

Cost to Fix P0122 2004 Infiniti G35

The typical repair costs for addressing a P0122 code on a 2004 Infiniti G35 can vary depending on the specific cause of the issue. Generally, the cost of replacing a throttle position sensor can range from $100 to $300, including parts and labor. However, if additional repairs or diagnostics are needed, the total cost may increase. It's advisable to consult with a trusted mechanic or auto repair shop for a more accurate estimate based on the specific circumstances of the vehicle. Keep in mind that labor rates can vary between different locations and types of repair facilities.

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 Infiniti G35 Code

1. What are the common symptoms of OBDII code P0122 on a 2004 Infiniti G35?

- Common symptoms include poor acceleration, rough idling, stalling, and possibly difficulty shifting gears.

2. What does the OBDII code P0122 indicate on a 2004 Infiniti G35?

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

3. What are some possible causes of OBDII code P0122 on a 2004 Infiniti G35?

- Some possible causes include a faulty throttle position sensor, damaged wiring or connectors, a malfunctioning throttle body, or a problem with the engine control module.

4. How can I diagnose the OBDII code P0122 on a 2004 Infiniti G35?

- Diagnosing the code typically involves checking the throttle position sensor's wiring and connectors, testing the sensor's voltage, and inspecting the throttle body for any issues.

5. Can I drive my 2004 Infiniti G35 with OBDII code P0122?

- It is not recommended to drive the vehicle with this code as it can lead to poor performance and potential safety issues. It's best to address the problem promptly.

6. How can I repair OBDII code P0122 on a 2004 Infiniti G35?

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

7. Will resetting the OBDII code P0122 on a 2004 Infiniti G35 fix the issue?

- Simply resetting the code may temporarily clear the warning light, but it will not fix the underlying problem causing the code to trigger. Proper diagnosis and repair are necessary.

8. How much does it cost to repair OBDII code P0122 on a 2004 Infiniti G35?

- The cost of repair can vary depending on the specific issue causing the code, the parts needed, and labor charges. It's best to consult a mechanic for an accurate estimate.

9. Can a DIY enthusiast fix OBDII code P0122 on a 2004 Infiniti G35?

- Depending on the DIYer's skill level and access to tools, it may be possible to address some aspects of the repair, such as replacing the throttle position sensor. However, complex issues may require professional help.

10. How long does it take to repair OBDII code P0122 on a 2004 Infiniti G35?

- The repair time can vary depending on the exact cause of the code and the extent of the repairs needed. Simple fixes like sensor replacement may take a few hours, while more complex issues could take longer.

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