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Engine-Codes – Nissan – P2118 2006 Nissan Altima Sedan

P2118 2006 Nissan Altima Sedan Code - Throttle Control Motor Circuit Short Bank 1

Quick Answer

The diagnostic trouble code P2118 for a 2006 Nissan Altima Sedan indicates a problem with the Throttle Control Motor Circuit Short Bank 1. Common causes include Damaged wiring or connectors in the throttle control motor circuit, Faulty throttle control motor, Malfunctioning Engine Control Module (ECM). 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 2006 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, Faulty throttle control motor, Malfunctioning Engine Control Module (ECM).
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 P2118 2006 Nissan Altima Sedan Description

The diagnostic trouble code P2118 for a 2006 Nissan Altima Sedan indicates a problem with the Throttle Control Motor Circuit Short Bank 1. This code specifically points to an issue with the throttle control motor circuit, which is responsible for controlling the opening and closing of the throttle valve in response to driver input. The throttle control motor is an essential component of the electronic throttle control system, which has largely replaced traditional throttle cables in modern vehicles.

OBDII Code P2118 2006 Nissan Altima Sedan - Throttle Control Motor Circuit Short Bank 1
P2118 2006 Nissan Altima Sedan Code - Throttle Control Motor Circuit Short Bank 1

Common Causes of P2118 2006 Nissan Altima Sedan

  1. Damaged wiring or connectors in the throttle control motor circuit
  2. Faulty throttle control motor
  3. Malfunctioning Engine Control Module (ECM)
  4. Corrosion or contamination in the throttle control system
  5. Poor electrical connections or grounds

Symptoms of P2118 2006 Nissan Altima Sedan

  1. Reduced power and acceleration
  2. Rough idling or stalling
  3. Check Engine Light illuminated on the dashboard
  4. Limp mode activation
  5. Difficulty maintaining a consistent speed

How to Fix P2118 2006 Nissan Altima Sedan

  1. Begin by diagnosing the specific cause of the P2118 code using a scan tool to pinpoint the exact issue.
  2. Inspect the throttle control motor circuit for any damaged wiring, connectors, or corrosion. Repair or replace as necessary.
  3. Test the throttle control motor for proper operation and replace if found to be faulty.
  4. Check the ECM for any signs of malfunction and reprogram or replace if needed.
  5. Clear the trouble code from the ECM's memory and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P2118 2006 Nissan Altima Sedan

The typical repair costs for addressing a P2118 code on a 2006 Nissan Altima Sedan can range from $200 to $500, including parts and labor. However, it's important to note that actual costs can vary depending on the specific diagnosis time and labor rates at auto repair shops. Rates can range from $80 to $150 per hour, with higher rates in metropolitan areas or at dealerships, and lower rates at independent shops. It's recommended to obtain quotes from local shops for a more accurate estimate.

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 2006 Nissan Altima Sedan Code

1. What does the OBDII code P2118 mean on a 2006 Nissan Altima?

P2118 indicates a problem in the throttle control motor circuit, specifically a short or fault in Bank 1, which affects the electronic throttle system.

2. What are the common symptoms of code P2118 in a 2006 Nissan Altima?

Common symptoms include poor acceleration, the engine entering limp mode, unresponsive throttle, and the illumination of the check engine light.

3. What causes the P2118 code to appear on a 2006 Nissan Altima?

The code is typically caused by a short circuit in the throttle control motor, faulty wiring or connections, a failing throttle body, or a malfunctioning engine control module (ECM).

4. How do I troubleshoot code P2118 on a 2006 Nissan Altima?

Check the throttle control motor wiring and connectors for damage or corrosion, inspect the throttle body for mechanical issues, and test the electronic control module for faults.

5. Can a faulty throttle body cause code P2118 on a 2006 Nissan Altima?

Yes, a malfunctioning throttle body can cause the P2118 code due to issues with the throttle control motor or its circuit.

6. Is it safe to drive a 2006 Nissan Altima with code P2118?

Driving with this code is not recommended because the vehicle may enter limp mode, significantly reducing power and posing safety risks.

7. How do you fix the P2118 code on a 2006 Nissan Altima?

Repairs may include replacing damaged wiring or connectors, cleaning or replacing the throttle body, and resetting the ECM after repairs.

8. How much does it cost to repair a P2118 code on a 2006 Nissan Altima?

Repair costs vary but may range from $150 to $700 depending on whether you need to replace the throttle body or repair wiring.

9. Can a low battery cause the P2118 code on a 2006 Nissan Altima?

While rare, a weak or failing battery can sometimes cause electrical malfunctions, including issues with the throttle control system.

10. Do I need to reprogram the ECM after fixing the P2118 code on a 2006 Nissan Altima?

In most cases, the ECM does not require reprogramming, but the code should be cleared, and the system should be tested to ensure proper operation.

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