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Engine-Codes – Nissan – P1126 2005 Nissan Altima Sedan

P1126 2005 Nissan Altima Sedan Code - Throttle Control Motor Relay Circuit Open

Quick Answer

The P1126 code for a 2005 Nissan Altima Sedan indicates a problem with the Throttle Control Motor Relay Circuit being open. Common causes include Faulty throttle control motor relay, Wiring issues or loose connections in the circuit, Malfunctioning throttle control motor. 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
P1126 2005 Nissan Altima Sedan indicates Throttle Control Motor Relay Circuit Open.
Common causes
Common causes include Faulty throttle control motor relay, Wiring issues or loose connections in the circuit, Malfunctioning throttle control motor.
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 P1126 2005 Nissan Altima Sedan Description

The P1126 code for a 2005 Nissan Altima Sedan indicates a problem with the Throttle Control Motor Relay Circuit being open. This means that there is an issue with the circuit that controls the throttle motor relay, which is responsible for regulating the throttle position in the vehicle. The throttle control motor relay is an essential component of the electronic throttle control system, which replaces the traditional throttle cable with an electronic sensor that communicates with the engine control unit (ECU) to adjust the throttle opening.

OBDII Code P1126 2005 Nissan Altima Sedan - Throttle Control Motor Relay Circuit Open
P1126 2005 Nissan Altima Sedan Code - Throttle Control Motor Relay Circuit Open

Common Causes of P1126 2005 Nissan Altima Sedan

  1. Faulty throttle control motor relay.
  2. Wiring issues or loose connections in the circuit.
  3. Malfunctioning throttle control motor.
  4. ECU malfunction or software glitch.
  5. Environmental factors such as moisture or corrosion affecting the circuit.

Symptoms of P1126 2005 Nissan Altima Sedan

  1. Hesitation or lack of response when pressing the accelerator pedal.
  2. Engine stalling or rough idling.
  3. Reduced engine power or acceleration.
  4. Illumination of the Check Engine Light on the dashboard.
  5. Difficulty maintaining a consistent speed while driving.

How to Fix P1126 2005 Nissan Altima Sedan

  1. Begin by conducting a thorough inspection of the throttle control motor relay circuit, checking for any loose connections or damaged wiring.
  2. Test the throttle control motor relay using a multimeter to determine if it is functioning properly.
  3. If the relay is faulty, replace it with a new one following the manufacturer's guidelines.
  4. Check the throttle control motor for any signs of damage or malfunction, replacing it if necessary.
  5. Clear the diagnostic trouble codes from the ECU and perform a test drive to ensure the issue has been resolved.

Cost to Fix P1126 2005 Nissan Altima Sedan

The cost of repairing a Throttle Control Motor Relay Circuit Open issue in a 2005 Nissan Altima Sedan can vary depending on the specific cause of the problem and the labor rates in your area. Typically, the cost of parts for this repair can range from $50 to $200, with labor costs adding an additional $100 to $200. Overall, you can expect to pay anywhere from $150 to $400 for this repair at an auto repair shop. It's important to note that prices may vary based on location, the shop's hourly labor rates, and the availability of parts. Be sure to get a detailed estimate from a trusted mechanic before proceeding with the repair.

When is the Code Detected?

Engine Control Module (ECM) detects a voltage of power source for throttle control motor is excessively low.

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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 P1126 2005 Nissan Altima Sedan Code

1. What are the common symptoms of OBDII code P1126 in a 2005 Nissan Altima Sedan?

- Common symptoms include rough idling, reduced engine power, and the vehicle going into "limp mode" where acceleration is limited.

2. What does the OBDII code P1126 "Throttle Control Motor Relay Circuit Open" mean for a 2005 Nissan Altima Sedan?

- This code indicates that there is an open circuit in the throttle control motor relay, causing a malfunction in the throttle control system.

3. What are the possible causes of OBDII code P1126 in a 2005 Nissan Altima Sedan?

- The code may be triggered by a faulty throttle control motor relay, damaged wiring or connectors in the circuit, or a malfunctioning throttle control motor itself.

4. How can I diagnose the cause of OBDII code P1126 in my 2005 Nissan Altima Sedan?

- You can use a multimeter to test the throttle control motor relay, inspect the wiring and connectors for any damage, and check the throttle control motor for proper operation.

5. Is it safe to continue driving my 2005 Nissan Altima Sedan with OBDII code P1126 present?

- It is not recommended to continue driving the vehicle with this code as it can lead to further damage and potential safety hazards due to the throttle control system malfunctioning.

6. Can I repair OBDII code P1126 in my 2005 Nissan Altima Sedan myself?

- Depending on your level of automotive experience, you may be able to repair the issue yourself by replacing the faulty throttle control motor relay, repairing damaged wiring, or replacing the throttle control motor.

7. Are there any temporary fixes or quick solutions for OBDII code P1126 in a 2005 Nissan Altima Sedan?

- Resetting the engine control module (ECM) by disconnecting the battery for a few minutes may temporarily clear the code, but it is not a permanent solution if the underlying issue is not addressed.

8. How much does it typically cost to repair OBDII code P1126 in a 2005 Nissan Altima Sedan at a mechanic or dealership?

- The cost of repairing this code can vary depending on the exact cause of the issue, but it may range from $100 to $300 for parts and labor.

9. Will OBDII code P1126 cause my 2005 Nissan Altima Sedan to fail an emissions test?

- Yes, this code can cause your vehicle to fail an emissions test as it indicates a malfunction in the throttle control system, which can impact emissions performance.

10. Can OBDII code P1126 in a 2005 Nissan Altima Sedan cause long-term damage if left unrepaired?

- Yes, if left unrepaired, the underlying issue causing this code can lead to further damage to the throttle control system and potentially other components, affecting the overall performance and safety of the vehicle.

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