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Engine-Codes – Infiniti – P1122 2003 Infiniti G35

P1122 2003 Infiniti G35 Code - Electric Throttle Control Performance Problem

Quick Answer

The P1122 code for a 2003 Infiniti G35 indicates an Electric Throttle Control Performance Problem. Common causes include Faulty electric throttle control actuator, Malfunctioning throttle position sensor, Wiring issues or loose connections in the throttle control system. 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
P1122 2003 Infiniti G35 indicates Electric Throttle Control Performance Problem.
Common causes
Common causes include Faulty electric throttle control actuator, Malfunctioning throttle position sensor, Wiring issues or loose connections in the throttle control system.
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 12, 2024
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Code P1122 2003 Infiniti G35 Description

The P1122 code for a 2003 Infiniti G35 indicates an Electric Throttle Control Performance Problem. This code is typically associated with issues related to the electronic throttle control system, which regulates the amount of air entering the engine to control the vehicle's speed. When this system malfunctions, it can lead to poor engine performance, reduced fuel efficiency, and potentially unsafe driving conditions.

OBDII Code P1122 2003 Infiniti G35 - Electric Throttle Control Performance Problem
P1122 2003 Infiniti G35 Code - Electric Throttle Control Performance Problem

Common Causes of P1122 2003 Infiniti G35

  1. Faulty electric throttle control actuator.
  2. Malfunctioning throttle position sensor.
  3. Wiring issues or loose connections in the throttle control system.
  4. Electronic control module failure.
  5. Carbon buildup or debris affecting throttle body operation.

Symptoms of P1122 2003 Infiniti G35

  1. Erratic acceleration or lack of response when pressing the gas pedal.
  2. Engine stalling or rough idling.
  3. Reduced fuel efficiency.
  4. Vehicle going into "limp mode" with limited power.
  5. Illumination of the check engine light on the dashboard.

How to Fix P1122 2003 Infiniti G35

  1. Diagnose the specific cause by using a scan tool to retrieve the trouble codes and perform a thorough inspection of the electric throttle control system.
  2. Test the electric throttle control actuator and throttle position sensor for proper operation.
  3. Check the wiring harness and connections for any signs of damage or corrosion.
  4. Clean the throttle body to remove any carbon buildup or debris that may be affecting its operation.
  5. Replace any faulty components identified during the diagnostic process, such as the electric throttle control actuator or throttle position sensor.

Cost to Fix P1122 2003 Infiniti G35

The typical repair costs for addressing a P1122 code on a 2003 Infiniti G35 can range from $200 to $600, depending on the specific cause of the issue and the cost of replacement parts. This estimate includes both parts and labor, with labor rates varying between $80 and $150 per hour at most auto repair shops. It is advisable to consult with a local mechanic or dealership for a more accurate cost estimate based on your location and vehicle's specific needs.

What does this mean?

Tech Notes for P1122 2003 Infiniti G35

Start by performing the "Idle Air Volume Learning Procedure", if the problem persists the Electric Throttle Control Actuator may need to be replaced.

When is the Code Detected?

Electric throttle control function does not operate properly.

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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 P1122 2003 Infiniti G35 Code

1. What are the common symptoms of OBDII code P1122 in a 2003 Infiniti G35?

The common symptoms of P1122 in a 2003 Infiniti G35 may include reduced engine power, hesitation or stalling, and an illuminated check engine light.

2. What does OBDII code P1122 indicate in a 2003 Infiniti G35?

P1122 indicates an Electric Throttle Control Performance Problem in a 2003 Infiniti G35, specifically related to the throttle position sensor.

3. What are the possible causes of OBDII code P1122 in a 2003 Infiniti G35?

Possible causes of P1122 in a 2003 Infiniti G35 include a faulty throttle position sensor, wiring issues, a dirty throttle body, or a malfunctioning electronic throttle control system.

4. How can I diagnose the source of OBDII code P1122 in my 2003 Infiniti G35?

Diagnosing P1122 may involve checking the throttle position sensor for proper voltage, inspecting the wiring for damage, cleaning the throttle body, and using a scan tool to monitor sensor readings.

5. Can I continue driving my 2003 Infiniti G35 with OBDII code P1122 present?

It is not recommended to continue driving with P1122 as it can lead to further engine performance issues and potential safety concerns. It is best to address the problem promptly.

6. How can I repair OBDII code P1122 in my 2003 Infiniti G35?

Repairing P1122 may involve replacing the throttle position sensor, repairing any damaged wiring, cleaning the throttle body, or recalibrating the electronic throttle control system.

7. Is it possible to clear OBDII code P1122 in a 2003 Infiniti G35 without fixing the underlying issue?

Clearing the code without addressing the underlying problem will not resolve the issue and the code is likely to reappear once the ECU detects the same problem.

8. How much does it typically cost to repair OBDII code P1122 in a 2003 Infiniti G35?

The cost of repairing P1122 can vary depending on the specific cause of the issue, but it may range from $100 to $500 for parts and labor.

9. Can a DIY enthusiast fix OBDII code P1122 in a 2003 Infiniti G35?

Depending on their skill level, a DIY enthusiast may be able to address P1122 by following repair guides, using appropriate tools, and having a good understanding of the throttle control system.

10. How often does OBDII code P1122 occur in a 2003 Infiniti G35?

While not extremely common, P1122 can occur in a 2003 Infiniti G35 due to various factors such as age, mileage, and maintenance history of the vehicle.

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