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Engine-Codes – Nissan – P2118 2011 Nissan Altima Sedan

P2118 2011 Nissan Altima Sedan Code - Throttle Control Motor Circuit Short Bank 1

Quick Answer

The P2118 diagnostic trouble code (DTC) for a 2011 Nissan Altima Sedan refers to a Throttle Control Motor Circuit Short Bank 1. Common causes include Short circuit in the wiring connecting the throttle control motor to the ECU, Faulty throttle control motor, Issues with the ECU. 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 2011 Nissan Altima Sedan indicates Throttle Control Motor Circuit Short Bank 1.
Common causes
Common causes include Short circuit in the wiring connecting the throttle control motor to the ECU, Faulty throttle control motor, Issues with the ECU.
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 11, 2024
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Code P2118 2011 Nissan Altima Sedan Description

The P2118 diagnostic trouble code (DTC) for a 2011 Nissan Altima Sedan refers to a Throttle Control Motor Circuit Short Bank 1. This code indicates that there is a malfunction in the throttle control motor circuit, specifically on bank 1 of the vehicle. The throttle control motor is responsible for controlling the opening and closing of the throttle valve, which regulates the amount of air that enters the engine.

OBDII Code P2118 2011 Nissan Altima Sedan - Throttle Control Motor Circuit Short Bank 1
P2118 2011 Nissan Altima Sedan Code - Throttle Control Motor Circuit Short Bank 1

Common Causes of P2118 2011 Nissan Altima Sedan

  1. Short circuit in the wiring connecting the throttle control motor to the ECU.
  2. Faulty throttle control motor.
  3. Issues with the ECU.
  4. Damaged wiring or loose connections.
  5. Corrosion in the wiring or connectors.

Symptoms of P2118 2011 Nissan Altima Sedan

  1. Poor acceleration or lack of response when pressing the gas pedal.
  2. Rough idling or stalling at idle.
  3. Check Engine Light illuminated on the dashboard.
  4. Decreased fuel efficiency.
  5. Engine running rough or misfiring.

How to Fix P2118 2011 Nissan Altima Sedan

  1. Begin by diagnosing the issue using a scan tool to confirm the P2118 code and pinpoint the exact cause of the problem.
  2. Inspect the wiring connecting the throttle control motor to the ECU for any signs of damage, corrosion, or loose connections. Repair or replace any damaged wiring as needed.
  3. Test the throttle control motor to determine if it is functioning properly. If the motor is faulty, it will need to be replaced.
  4. Clear the DTC using a scan tool and test drive the vehicle to ensure that the issue has been resolved.
  5. If the problem persists, further diagnostic testing may be necessary to identify any other underlying issues that may be causing the code to reappear.

Cost to Fix P2118 2011 Nissan Altima Sedan

The typical repair costs for addressing a P2118 code on a 2011 Nissan Altima Sedan can vary depending on the specific cause of the issue. In general, the cost of parts for this repair can range from $100 to $300, with labor costs adding an additional $100 to $200. Overall, the total repair cost for this issue could range from $200 to $500. It's important to note that the 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. It's advisable to check local rates for a more precise 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 2011 Nissan Altima Sedan Code

1. What are the common symptoms of OBDII code P2118 in a 2011 Nissan Altima Sedan?

The common symptoms of code P2118 include reduced engine power, acceleration issues, and the vehicle going into a "limp mode."

2. What does the OBDII code P2118 Throttle Control Motor Circuit Short Bank 1 mean for a 2011 Nissan Altima Sedan?

Code P2118 indicates a malfunction in the throttle control motor circuit on bank 1 of the engine in the 2011 Nissan Altima Sedan.

3. What are the possible causes of OBDII code P2118 in a 2011 Nissan Altima Sedan?

Potential causes of code P2118 include a faulty throttle control motor, damaged wiring or connectors in the circuit, or issues with the throttle position sensor.

4. How can I diagnose the OBDII code P2118 in my 2011 Nissan Altima Sedan?

Diagnosing code P2118 involves conducting a thorough inspection of the throttle control motor, checking the wiring and connectors for any damage, and testing the throttle position sensor.

5. Can I still drive my 2011 Nissan Altima Sedan with OBDII code P2118?

It is not recommended to drive your vehicle with code P2118 as it can lead to performance issues and potential safety hazards. It is advisable to address the problem promptly.

6. Is it safe to continue driving if the throttle control motor circuit short bank 1 error occurs?

It is best to avoid driving your 2011 Nissan Altima Sedan when the throttle control motor circuit short bank 1 error is present to prevent further damage and ensure your safety on the road.

7. How can I repair OBDII code P2118 in my 2011 Nissan Altima Sedan?

To repair code P2118, you may need to replace the throttle control motor, repair any damaged wiring or connectors, or adjust the throttle position sensor as necessary.

8. Are there any DIY tips for fixing OBDII code P2118 in a 2011 Nissan Altima Sedan?

While some basic troubleshooting steps can be performed by DIY enthusiasts, it is recommended to consult a professional mechanic for proper diagnosis and repair of code P2118.

9. Will resetting the OBDII system clear the P2118 error code in my 2011 Nissan Altima Sedan?

Resetting the OBDII system may temporarily clear the error code, but if the underlying issue causing code P2118 is not addressed, the code is likely to reappear.

10. How much does it typically cost to fix OBDII code P2118 in a 2011 Nissan Altima Sedan?

The cost of fixing code P2118 can vary depending on the exact cause of the issue, but it may involve parts and labor expenses ranging from $200 to $600 or more, depending on the repairs needed.

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