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P1122 2004 Nissan Altima Sedan Code - Electric Throttle Control Performance Problem

Quick Answer

The P1122 diagnostic trouble code (DTC) for a 2004 Nissan Altima Sedan indicates an Electric Throttle Control Performance Problem. Common causes include Faulty throttle control module, Damaged wiring or connectors, Malfunctioning throttle position sensor. 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 2004 Nissan Altima Sedan indicates Electric Throttle Control Performance Problem.
Common causes
Common causes include Faulty throttle control module, Damaged wiring or connectors, Malfunctioning throttle position sensor.
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 2004 Nissan Altima Sedan Description

The P1122 diagnostic trouble code (DTC) for a 2004 Nissan Altima Sedan indicates an Electric Throttle Control Performance Problem. This code typically points to an issue with the electronic throttle control system, which is responsible for managing the engine's air intake and fuel delivery for optimal performance. The throttle control module communicates with the engine control unit (ECU) to regulate the throttle opening based on driver input. When the ECU detects a performance problem with the electric throttle control system, it triggers the P1122 code.

OBDII Code P1122 2004 Nissan Altima Sedan - Electric Throttle Control Performance Problem
P1122 2004 Nissan Altima Sedan Code - Electric Throttle Control Performance Problem

Common Causes of P1122 2004 Nissan Altima Sedan

  1. Faulty throttle control module
  2. Damaged wiring or connectors
  3. Malfunctioning throttle position sensor
  4. Electronic component failure
  5. Poor electrical connection

Symptoms of P1122 2004 Nissan Altima Sedan

  1. Erratic throttle response
  2. Reduced power output
  3. Poor fuel efficiency
  4. Engine stalling
  5. Illuminated check engine light

How to Fix P1122 2004 Nissan Altima Sedan

  1. Perform a thorough inspection of the throttle control module, wiring, and connectors for any signs of damage or wear.
  2. Test the throttle position sensor to ensure it is functioning correctly and replace if necessary.
  3. Check the electronic components of the throttle control system for faults and replace any faulty parts.
  4. Clear the DTC and reset the ECU to see if the issue persists.
  5. Conduct a road test to verify that the throttle control system is operating properly after repairs.

Cost to Fix P1122 2004 Nissan Altima Sedan

The typical repair costs for addressing a P1122 code on a 2004 Nissan Altima Sedan can range from $200 to $500, including parts and labor. However, it's important to note that specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. Most auto repair shops charge between $80 and $150 per hour for labor, with rates potentially higher in metropolitan areas or at dealerships, and lower at independent shops. It's recommended to inquire about local rates for a more accurate estimate.

What does this mean?

Tech Notes for P1122 2004 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 2004 Nissan Altima:

2004 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 2004 Nissan Altima Sedan Code

1. What does the OBDII code P1122 mean on a 2004 Nissan Altima Sedan?

P1122 indicates an "Electric Throttle Control Performance Problem," meaning there is an issue with the electronic throttle control system that manages engine air intake.

2. What are the common symptoms of the P1122 code?

Symptoms include reduced engine power, poor acceleration, the throttle not responding properly, the engine stalling, or the check engine light being illuminated.

3. What causes the P1122 code to appear?

Common causes include a faulty throttle position sensor (TPS), a malfunctioning throttle body, damaged wiring or connectors, or issues with the engine control module (ECM).

4. How can I diagnose the P1122 code?

Start by scanning the vehicle with an OBDII scanner, inspect the throttle body and TPS for damage or dirt, check wiring and connectors for corrosion or breaks, and test the TPS for proper resistance and voltage.

5. Can cleaning the throttle body fix the P1122 code?

Yes, if the issue is caused by carbon buildup or dirt on the throttle body, cleaning it may resolve the problem. However, further diagnosis may be needed if the code persists.

6. Is the P1122 code safe to drive with?

Driving with this code can result in reduced engine performance and safety risks due to poor throttle response. It’s best to address the issue as soon as possible.

7. How much does it typically cost to fix the P1122 code?

Repair costs can range from $100 to $500, depending on whether the issue is a simple wiring fix, throttle body cleaning, or the replacement of the throttle body or TPS.

8. Can a bad accelerator pedal position sensor cause the P1122 code?

Yes, a faulty accelerator pedal position sensor can cause throttle control issues and trigger the P1122 code.

9. Does the P1122 code require reprogramming the ECM?

Reprogramming the ECM is not usually required unless the ECM itself is faulty. However, a throttle body relearn procedure may be necessary after certain repairs.

10. Will disconnecting the battery clear the P1122 code?

Disconnecting the battery may temporarily clear the code, but if the underlying issue is not resolved, the code will likely return. Proper diagnosis and repair are necessary.

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