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P1122 2003 Nissan Altima Sedan Code - Electric Throttle Control Performance Problem

Quick Answer

The P1122 code for a 2003 Nissan Altima Sedan indicates an Electric Throttle Control Performance Problem. Common causes include Malfunctioning throttle control module, Faulty throttle position sensor, Wiring issues. 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 Nissan Altima Sedan indicates Electric Throttle Control Performance Problem.
Common causes
Common causes include Malfunctioning throttle control module, Faulty throttle position sensor, Wiring issues.
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 17, 2024
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Code P1122 2003 Nissan Altima Sedan Description

The P1122 code for a 2003 Nissan Altima Sedan indicates an Electric Throttle Control Performance Problem. This code is related to the vehicle's electronic throttle control system, which is responsible for regulating the amount of air entering the engine. The throttle control module communicates with the engine control module to adjust the throttle opening based on driver input. When the system detects a performance issue, it can lead to a variety of problems affecting the vehicle's drivability and overall performance.

OBDII Code P1122 2003 Nissan Altima Sedan - Electric Throttle Control Performance Problem
P1122 2003 Nissan Altima Sedan Code - Electric Throttle Control Performance Problem

Common Causes of P1122 2003 Nissan Altima Sedan

  1. Malfunctioning throttle control module
  2. Faulty throttle position sensor
  3. Wiring issues
  4. Electronic throttle body problems

Symptoms of P1122 2003 Nissan Altima Sedan

  1. Reduced engine power
  2. Hesitation or stalling during acceleration
  3. Rough idling
  4. Vehicle going into limp mode

How to Fix P1122 2003 Nissan Altima Sedan

  1. Perform a thorough diagnostic scan to identify the specific cause of the Electric Throttle Control Performance Problem.
  2. Inspect the throttle control module, throttle position sensor, and wiring for any signs of damage or malfunction.
  3. Clean the electronic throttle body to remove any carbon buildup that could be affecting its performance.
  4. Replace any faulty components identified during the diagnostic process, such as the throttle control module or throttle position sensor.
  5. Clear the diagnostic trouble codes and perform a test drive to ensure the issue has been resolved.

Cost to Fix P1122 2003 Nissan Altima Sedan

The typical repair costs for addressing an Electric Throttle Control Performance Problem can range from $200 to $500, depending on the specific cause of the issue and the cost of parts and labor. It is important to note that diagnosis time and labor rates at auto repair shops can vary, with hourly rates typically ranging between $80 and $150. Rates may be higher at dealerships or in metropolitan areas, while independent shops may offer lower prices. It is advisable to obtain quotes from multiple sources to ensure a fair price for the repair.

What does this mean?

Tech Notes for P1122 2003 Nissan Altima Sedan

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



There is a factory service bulletin for the 2003 Nissan Altima:

2003 Nissan Altima Factory Service Bulletin OBDII Code P1122

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 Nissan Altima Sedan Code

1. What does the OBDII code P1122 mean on a 2003 Nissan Altima Sedan?

P1122 indicates a problem with the Electric Throttle Control system, specifically a performance issue or malfunction detected by the engine control module (ECM).

2. What are the common symptoms of P1122 in a 2003 Nissan Altima?

Symptoms may include reduced engine power, poor acceleration, a stuck throttle, engine stalling, or the check engine light turning on.

3. What causes the P1122 code in a 2003 Nissan Altima?

Common causes include a faulty throttle position sensor (TPS), a malfunctioning throttle body, wiring or connector issues, or a problem with the ECM.

4. Can a dirty throttle body cause the P1122 code?

Yes, a dirty or clogged throttle body can disrupt airflow and cause the Electric Throttle Control system to malfunction, triggering the P1122 code.

5. How can I diagnose the P1122 code on my 2003 Nissan Altima?

Start by inspecting the throttle body, throttle position sensor, and related wiring for damage or dirt. Use a scan tool to monitor the TPS voltage and check for irregular readings.

6. Can I drive my 2003 Nissan Altima with the P1122 code?

While the car may still be drivable, it could experience reduced performance or stalling. It is best to address the issue promptly to avoid further damage.

7. How do I fix the P1122 code on a 2003 Nissan Altima?

Repairs may involve cleaning or replacing the throttle body, replacing the TPS, repairing damaged wiring, or resetting the ECM after repairs.

8. Does the P1122 code always mean the throttle body needs replacement?

Not always. The issue could be caused by a faulty TPS, wiring problem, or a simple need for throttle body cleaning.

9. How much does it cost to fix the P1122 code on a 2003 Nissan Altima?

The cost depends on the specific issue. Cleaning the throttle body may cost $100–$200, while replacing the throttle body or TPS can range from $300–$700.

10. Can a faulty ECM cause the P1122 code on a 2003 Nissan Altima?

Yes, though it is less common. If all other components and wiring are in good condition, the ECM may need to be inspected or reprogrammed.

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