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Engine-Codes – Nissan – P2118 2008 Nissan Altima Sedan

P2118 2008 Nissan Altima Sedan Code - Throttle Control Motor Circuit Short Bank 1

Quick Answer

The P2118 diagnostic trouble code (DTC) in a 2008 Nissan Altima Sedan refers to a problem with the Throttle Control Motor Circuit on Bank 1. Common causes include Damaged wiring or connectors in the throttle control motor circuit, Malfunctioning throttle control motor, Faulty engine control module. 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
P2118 2008 Nissan Altima Sedan indicates Throttle Control Motor Circuit Short Bank 1.
Common causes
Common causes include Damaged wiring or connectors in the throttle control motor circuit, Malfunctioning throttle control motor, Faulty engine control module.
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 16, 2024
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Code P2118 2008 Nissan Altima Sedan Description

The P2118 diagnostic trouble code (DTC) in a 2008 Nissan Altima Sedan refers to a problem with the Throttle Control Motor Circuit on Bank 1. This code indicates that there is a short circuit in the circuit that controls the throttle motor, which is responsible for regulating the airflow into the engine. The throttle control motor is an essential component of the electronic throttle control system, which replaces the traditional throttle cable with an electronic system that is controlled by the engine control module (ECM).

OBDII Code P2118 2008 Nissan Altima Sedan - Throttle Control Motor Circuit Short Bank 1
P2118 2008 Nissan Altima Sedan Code - Throttle Control Motor Circuit Short Bank 1

Common Causes of P2118 2008 Nissan Altima Sedan

  1. Damaged wiring or connectors in the throttle control motor circuit.
  2. Malfunctioning throttle control motor.
  3. Faulty engine control module.
  4. Corrosion or moisture in the throttle control motor circuit.
  5. Electrical issues such as a blown fuse or relay.

Symptoms of P2118 2008 Nissan Altima Sedan

  1. Engine hesitation or lack of response when pressing the accelerator pedal.
  2. Reduced engine power or inability to accelerate.
  3. Illumination of the Check Engine Light on the dashboard.
  4. Rough idling or stalling while driving.

How to Fix P2118 2008 Nissan Altima Sedan

  1. Begin by conducting a thorough visual inspection of the throttle control motor circuit, looking for any signs of damage or corrosion.
  2. Use a multimeter to test the continuity of the wiring and connectors in the circuit to identify any short circuits.
  3. Test the throttle control motor itself to determine if it is functioning correctly or needs to be replaced.
  4. Check the engine control module for any fault codes related to the throttle control motor circuit.
  5. Once the issue has been identified, repair or replace any damaged components and clear the DTC from the vehicle's ECM.

Cost to Fix P2118 2008 Nissan Altima Sedan

The typical repair costs for addressing a P2118 code in a 2008 Nissan Altima Sedan can range from $200 to $500, depending on the specific cause of the issue and the cost of parts and labor. This estimate includes the cost of diagnostic testing, replacement parts, and labor for the repair. It's important to note that the actual cost may vary based on the location of the repair shop, the make and model of the vehicle, and the extent of the damage. Additionally, factors such as the specific diagnosis time and labor rates at auto repair shops can influence the final cost. It's recommended to obtain quotes from multiple repair shops to compare prices and ensure a fair and accurate estimate for the repair.

When is the Code Detected?

Engine Control Module (ECM) detects short in both circuits between ECM and throttle control motor.

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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 P2118 2008 Nissan Altima Sedan Code

1. What are the common symptoms of OBDII code P2118 on a 2008 Nissan Altima Sedan?

The common symptoms of OBDII code P2118 on a 2008 Nissan Altima Sedan include reduced engine power, poor acceleration, and the vehicle going into limp mode.

2. What does the OBDII code P2118 for a 2008 Nissan Altima Sedan indicate?

OBDII code P2118 for a 2008 Nissan Altima Sedan indicates a throttle control motor circuit short on Bank 1.

3. What are the possible causes of OBDII code P2118 on a 2008 Nissan Altima Sedan?

Possible causes of OBDII code P2118 on a 2008 Nissan Altima Sedan include a faulty throttle control motor, damaged wiring or connectors in the throttle control circuit, or a problem with the throttle body.

4. How can I diagnose the issue causing OBDII code P2118 on my 2008 Nissan Altima Sedan?

To diagnose the issue causing OBDII code P2118 on your 2008 Nissan Altima Sedan, you can use a scan tool to check for any other related codes, visually inspect the throttle control motor and its wiring, and perform a continuity test on the circuit.

5. Can I still drive my 2008 Nissan Altima Sedan with OBDII code P2118?

It is not recommended to drive your 2008 Nissan Altima Sedan with OBDII code P2118 as it can lead to further damage to the throttle control system and affect the vehicle's performance.

6. How can I repair OBDII code P2118 on my 2008 Nissan Altima Sedan?

To repair OBDII code P2118 on your 2008 Nissan Altima Sedan, you may need to replace the throttle control motor, repair any damaged wiring or connectors, or clean and inspect the throttle body for any issues.

7. Is it possible to reset OBDII code P2118 on a 2008 Nissan Altima Sedan without fixing the underlying issue?

While you can clear the OBDII code P2118 on a 2008 Nissan Altima Sedan using a scan tool, the code is likely to return if the underlying issue causing the fault is not addressed.

8. How much does it typically cost to fix OBDII code P2118 on a 2008 Nissan Altima Sedan?

The cost to fix OBDII code P2118 on a 2008 Nissan Altima Sedan can vary depending on the specific cause of the issue, but it may range from $200 to $600 including parts and labor.

9. Can a DIY enthusiast repair OBDII code P2118 on a 2008 Nissan Altima Sedan?

While some DIY enthusiasts may have the skills to repair OBDII code P2118 on a 2008 Nissan Altima Sedan, it is recommended to consult a professional mechanic for a proper diagnosis and repair to ensure the issue is resolved correctly.

10. How long does it take to repair OBDII code P2118 on a 2008 Nissan Altima Sedan?

The time it takes to repair OBDII code P2118 on a 2008 Nissan Altima Sedan can vary depending on the specific cause of the issue and the extent of the repairs needed, but it may take a few hours to a full day to complete the repair.

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